Several postdoctoral positions funded by Prof David Mateos’ Advanced ERC Grant are now open at the Institute of Cosmos Sciences at the University of Barcelona (ICCUB). 

For more information about this job offer, visit the link: https://icc.ub.edu/node/1335749

Selected candidates are expected to work with Profs David Mateos, Jorge Casalderrey-Solana and other members of the group on applications of Holography to Cosmology and Astrophysics, with a focus on Gravitational Waves. 

Topics of interest include cosmological phase transitions, baryogenesis, neutron star mergers, spacetime singularities and holography with dynamical boundary gravity. Prior knowledge of holography is not required. 

Faculty members at the ICCUB working on related topics include Pablo Bueno, Roberto Emparan, Bartomeu Fiol, Jaume Garriga, Cristiano Germani, Raul Jimenez, Raimon Luna, Javier Magan, Alessio Notari and Jorge Russo. 

For information about research at the ICCUB visit http://icc.ub.edu

Appointments will begin in the Fall of 2026 for a period of 3 years. The deadline for applications is December 17th 2025.

The University of Barcelona is part of a group of European institutes with a centralized system of postdoctoral applications. Candidates should apply through the following website, choosing “Barcelona" as one of their preferred institutes and “Applied Holography” as one of their preferred research topics:

https://academicjobsonline.org/ajo/JointPhysicsApplicat/JointPhysicsApplicat/JEPATHEP

Equal Employment Opportunity Statement

The ICCUB is an equal employment opportunity employer. The ICCUB promotes a diverse and inclusive environment and welcomes applicants regardless of age, disability, gender, nationality, race, religion or sexual orientation. We strongly encourage women and underrepresented minorities in physical sciences to apply. For additional information please see the Diversity, equity and inclusion Commission.

The Institute of Cosmos Sciences of the University of Barcelona (ICCUB), recognized as a Unit of Excellence under the Severo Ochoa and María de Maeztu program, the highest distinction awarded to research institutes or centers in Spain, is launching a pre-selection call for at least six PhD fellowships as part of its María de Maeztu Strategic Program. This initiative reflects ICCUB’s strong commitment to scientific excellence and the advancement of emerging research talent.

This pre-selection aims to identify highly motivated national and international candidates interested in pursuing a PhD in one of ICCUB’s core research areas: cosmology, astrophysics, gravitational waves, quantum technologies, and particle physics. Selected candidates will be invited to participate in the official selection process conducted by the University of Barcelona, which is required for formal admission and hiring.

ICCUB offers a dynamic, interdisciplinary research environment that fosters international collaboration and innovation, supported by cutting-edge infrastructure and a vibrant academic community. Located in Barcelona, a global hub for science and technology, the institute provides an ideal setting for early-stage researchers to launch their scientific careers while enjoying a rich and multicultural lifestyle.

The institute is actively involved in several major international collaborations, including LHCb, DESI, and Euclid, and plays a leading role in gravitational wave experiments such as the Virgo Collaboration, the Einstein Telescope Collaboration, and the LISA Consortium. ICCUB also contributes to large-scale astronomical surveys like ESA-Gaia, Weave, and SDSS-IV, as well as electromagnetic follow-up missions across various wavelengths, including BlackGEM, MAGIC, and LST.

About this project, two positions:

The successful applicants will conduct original research focusing on topics in and related to: precision measurements in experimental particle physics, robust inference from state-of-the-art cosmological surveys,  neutrino properties at the intersection of particle physics and cosmology, dark matter distribution, clustering and detection from cosmic scales down to Earth and synergetic aspects of these topics.  Work will be embedded in the Institute priority research line “Physics Beyond the two standard models: the standard cosmological model, LCDM, and the standard model of particle physics”  and will be connected to the activities of the ICCUB technological unit.

The successful candidate will have the opportunity  to work across different research groups at the ICCUB:

• Cosmology and Large Scale Structure
• Particle Physics Phenomenology
• Galaxy Structure and Evolution
• Experimental High Energy Physics

Opportunities at ICCUB:

The PhD fellows at ICCUB will benefit from a comprehensive and enriching training program designed to prepare them for successful careers in academia, industry, or scientific outreach. Each doctoral project is embedded within one of ICCUB’s strategic research challenges. Supervision is provided by experienced ICCUB researchers, often involving co-supervision to foster interdisciplinary perspectives and collaborative mentorship.

In addition to research, students will engage in a tailored training program that includes both technical and transferable skills: scientific seminars, ICCUB Colloquia, advanced instrumentation workshops, data science, research ethics, science communication, project management, and career development. ICCUB also encourages international mobility through short-term research stays at leading institutions worldwide, enhancing global scientific exchange and visibility.

Fellowship terms:

• The fellowship includes funds for a predoctoral training contract for up to four years. The annual salary will be split into 12 monthly payments and distributed as follows:
  • The first year of PhD: 18.269,56 €/year
  • The second and third year of PhD: 22.032,36 € /year 
  • The fourth year of PhD: 24.468,15€/year
  • Predoctoral contracts are renewed annually for up to 4 years. Renewal is subject to satisfactory performance in the PhD studies and related research activities. If the doctoral degree is obtained before the predoctoral fellowship ends, a Postdoctoral Orientation Period (POP) can be funded from the time the doctoral degree is obtained until the end of the predoctoral fellowship, with a maximum duration of 12 months (i.e. predoc contract + POP = max. 4 years in total).
  • The fellowship includes full social security coverage through the Spanish Social Security system, providing access to the Spanish public health care system and pension and unemployment benefits.
• Up to 7.000€ to cover the enrolment fees for the UB’s Physics doctoral program (for a maximum of 4 years) and carry out short stays in other institutions, companies or universities abroad. The research stays must have a minimum duration of one month and must be authorized by the doctoral supervisor/s.

• For full details, refer to the 2024 ‘Centros de Excelencia «Severo Ochoa» y Unidades «María de Maeztu»’ call for proposals, within the Plan Estatal de Investigación Científica y Técnica y de Innovación 2021–2023 (Articles 10, 11, and 29).

Eligibility criteria:

The fellowships are addressed to graduate students of any nationality who fulfil the following eligibility criteria:

• Applicants must hold a Bachelor’s and a Master’s Degree in Physics, Mathematics, Astronomy, Particle Physics, Cosmology, Electronics, Semiconductor Technology, Photonics, Quantum Technologies, Computer Science or a related discipline by September 2026
• Be eligible for full-time enrollment in the UB Physics doctoral program for the 2026-2027 academic year by the time the fellowship starts, between September 2026 and January 2027.
• Applicants must not hold a doctoral degree. Moreover, applicants are not eligible if they have benefited from a predoctoral training fellowship under the ‘Plan Estatal de Investigación, Desarrollo e Innovación Tecnológica’ or any of the previous Spanish National Plans by MICIU/AEI.
• Applicants must have a thesis supervisor affiliated with the Institute of Cosmos Sciences.

Selection criteria:

A score of up to 100 points will be awarded, on the bases of the following criteria:

1. Candidate's academic and/or scientific-technical experience, up to 50 points
   1. Scientific and technical contributions, up to 45 points The academic record and other curricular merits of the candidate will be assessed, as well as their suitability for the tasks to be carried out based on training and professional experience.
   2. Mobility and internationalization, up to 5 points Short-term research stays in national and international institutions, universities, and industry will be assessed, considering the prestige of the entity hosting the stay and the activity carried out therein, as well as the impact of the research stays on the research career path of the candidate.
2. Suitability of the candidate for the research activities to be carried out in the funded project, up to 50 points

The candidate's suitability for the program, project, and planned research activities will be evaluated based on their prior training and experience. In this context, consideration will be given to the added value that undertaking the project would bring to their research career, as well as the value the candidate would contribute to the host institution and research groups.

If two or more applications receive the same final score, preference will be given to the candidate with the highest score for criterion 1. If the candidates remain tied, a draw will be made to select the winning candidate.

Application Process:

The entire application process will be completed online. To apply, please complete the application form and provide contact details for two referees. After submission, you will receive instructions on how to upload the following documents:

• Curriculum Vitae, we welcome to use of the AEI template but this is not mandatory, in Spanish or English, which must list the merits the candidate wishes to be considered. The curriculum vitae template can be found here.
• Official transcripts of BSc and MSc studies in PDF format, showing grades obtained. If the academic transcripts are not in Catalan, Spanish or English, applicants should also attach a translation in one of the above-mentioned languages, and the grading system should be explained.
• Motivation letter with statement of research expertise and interests  and justificationof  their fit to the  project (max 3 pages).
• The contact of two Reference Letter writers (referees will be contacted directly)

Reference letters must be sent directly by the referees through the on-line application system (the system will contact these scientists you named, asking them to submit their letters of reference after a few working days). Applications will only be considered once at least one reference letter has been received.

Please note:

• In case of multiple applications to this call, the applicant should clearly indicate in their statement all the applications submitted or planned and indicate their prioritization in the motivation letter.
• For any questions regarding the application process, please contact secretaria@icc.ub.edu.
• Candidates must ensure that all information is included before the deadline. Incomplete applications will not be considered.

Important: Candidates who are shortlisted through the ICCUB pre-selection process will be invited to apply to the University of Barcelona’s call.

Key dates:

Application deadline: Until filled. Review of the applications will start on December 1st, 2025

Final resolution: February 2026

Pre-selection process:

The evaluation and pre-selection of the candidates will be conducted by the ICCUB María de Maeztu Committee for Predoctoral Training, following the guidelines set by the 2024 ‘Centros de Excelencia «Severo Ochoa» y Unidades «María de Maeztu»’ call for proposals, following the procedure below:

• The selection will be based on the evaluation criteria described before.
• At the late stages of the pre-selection process, short-listed candidates will be contacted for a personal interview.
• All applicants will be informed of the final pre-selection decision by February 2026.

ICCUB follows in its selection processes a gender equality opportunity policy and a non-discrimination policy based on age, ethnic or social origin, religion or belief, sexual orientation, language and disability.

Funding:

These positions are financed by the State Agency for Research of the Spanish Ministry of Science, Innovation and Universities through the "Unit of Excellence María de Maeztu 04/2019-03/2031" awarded to the Institute of Cosmos Sciences, grant CEX2024-001451-M funded by MICIU/AEI/10.13039/501100011033.

The Unit of Excellence Maria de Maeztu recognition has been awarded by the Spanish Government in 2025 for the third time to the ICCUB, as a center with a highly competitive strategic research programmes in the frontiers of knowledge.

The Institute of Cosmos Sciences of the University of Barcelona (ICCUB) invites applications for a Postdoctoral position in Quantum Resources for Science and Technology, as part of its current call for two postdoctoral positions and one ICCUB Postdoctoral Fellowship, offered under the framework of its Unit of Excellence Maria de Maeztu. 

These positions are part of a dynamic and interdisciplinary research environment at one of Europe’s leading centers in cosmology, astrophysics, and particle physics. The Institute of Cosmos Sciences (ICCUB) at the University of Barcelona, established in 2006, focuses on cosmology, astrophysics, particle physics, quantum physics, and nuclear physics. With over 70 scientists, 20 engineers, and 90 postdoctoral researchers and PhD students (35% international), ICCUB collaborates internationally on projects like Gaia, LHCb, Virgo, MAGIC, CTA, and DESI. It also has an Advanced Technology Unit supporting experimental research requiring cutting-edge technology. 

Description of the postdoctoral position

The candidate is expected to contribute substantially to the ICCUB-Maria de Maeztu Challenge: Exploiting quantum resources for science and technology

The rapidly unfolding second quantum revolution hinges on harnessing quantum entanglement and superposition to advance our understanding of nature at a fundamental level and to develop novel technologies. Key facets include quantum communication, computation, hardware, sensing, and imaging, with potential extensive applications across scientific and technological domains.

These developments are poised to have an unprecedented impact on communication security and on our computational capacity, driving global efforts in this field. Quantum hardware represents the current frontier, involving development of entangled-source qubits, quantum memories, quantum networks and sensors.

We take on this challenge with a strong multidisciplinary drive, a newly established quantum communications laboratory, and quantum computation and simulation. The latter includes basic science contributions to quantum simulation, and the development of algorithms to advance our understanding of many-body quantum systems with quantum computers.

Requirements:

Applicants must hold a PhD in Physics, Astrophysics, or a closely related field by the start date of the contract, approximately in October 2026. We are looking for motivated researchers with a strong track record and a collaborative spirit.

Employment Terms:

• Duration: up to 3 years
• Start Date: Preferably by Fall 2026 (flexibility possible for parental or special circumstances)
• Salary: 
  • Maria de Maeztu Postdoctoral Positions: Approx. 36.360€/year (gross), including full social security and public healthcare coverage for the researcher, spouse or registered partner and children
  • ICCUB Postdoctoral Fellowship: Approx. 42.900€/year (gross), including full social security and public healthcare coverage for the researcher, spouse or registered partner and children
• Research Support: 
  • Fellowship: €8,000/year for travel and training
  • Postdoctoral Positions: €5,000/year for travel and training
• Access to ICCUB’s advanced computational infrastructure, training programs, and career development resources

Equal Employment Opportunity Statement

ICCUB offers and promotes a diverse and inclusive environment and welcomes applicants regardless of age, disability, gender, nationality, race, religion or sexual orientation (for additional information please see the Diversity, Equity and Inclusion Commission. Job seekers in need of a reasonable accommodation to complete the application process should call or email secretaria@icc.ub.edu with their request.

Application Process:

To apply, please complete the application form and provide contact details for three referees. After submission, you will receive instructions to upload the following documents:

• Curriculum Vitae
• Cover Letter 
• Research statement (max 4pp) outlining research experience, interests, research plan and how the candidate’s profiles and research plan would fit with the scientific profile of the position(s)
• Publication List
• Three Reference Letters (referees will be contacted directly)

Reference letters must be sent directly by the referees through the on-line application system (the system will contact these scientists you named, asking them to submit their letters of reference after a few working days). 

Note: Applicants should select their preferred job offer.

Note: Your application will only be considered complete once at least two reference letters have been received.

For questions regarding the application process, please contact Esther Pallarès at secretaria@icc.ub.edu.

Deadline

Application deadline: 30 November, 2025
Review of applications will begin immediately after the deadline and will continue until all positions are filled.

Selection process:

The selection process consists of two phases: merit-based evaluation and an interview.

1. Merit-Based Evaluation

The Selection Committee will verify and assess the merits documented by the applicants. The maximum score for this phase is 80 points, distributed across the following categories:

Curriculum Vitae — Maximum: 30 points

The following aspects will be assessed:

• Scientific and technical contributions in the relevant research field.
• Quality and impact of publications, particularly those where the applicant is the lead author.
• Participation in research projects, collaborations, and scientific dissemination activities.
• Teaching experience, supervision of academic work and mentoring (e.g., theses, dissertations).

Alignment with the María de Maeztu Challenge — Maximum: 30 points

The following aspects will be assessed:

• A research statement that is ambitious, innovative, and clearly aligned with the objectives of the María de Maeztu Challenge.
• Potential for high-impact contributions within the proposed research line.
• Strategic use of relevant infrastructures and resources.

Reference Letters — Maximum: 20 points

The following aspects will be assessed:

• Strength and relevance of the recommendations.
• Evidence of the applicant’s research capabilities, independence, and potential for future contributions.

2. Interview: maximum 20 points

Applicants who score at least 50 points in the merit-based evaluation will be invited to an interview. The interview will be conducted in English and may take place online via a video conferencing platform.

Format and Content

• A presentation by the candidate: The presentation will last up to 20 minutes.
• Applicants will present their professional profile, focusing on how it aligns with the position and the María de Maeztu Challenge.
• They will also outline their vision for future scientific development and how they plan to contribute to the research environment.

Following the presentation, the Selection Committee may ask questions related to:

• The applicant’s research background and achievements.
• The proposed research statement.
• Any other relevant aspects of the application.

Scoring Criteria — Maximum: 20 points

• Up to 10 points for the alignment of the applicant’s profile with the objectives of the position.
• Up to 10 points for the clarity, feasibility, and impact of the applicant’s future research vision.

A minimum of 10 points is required to pass the interview phase.

Funding:

These positions are financed by the State Agency for Research of the Spanish Ministry of Science, Innovation and Universities through the "Unit of Excellence María de Maeztu 04/2019-03/2031" awarded to the Institute of Cosmos Sciences, grant CEX2024-001451-M funded by MICIU/AEI/10.13039/501100011033.

The Unit of Excellence Maria de Maeztu recognition has been awarded by the Spanish Government in 2025 for the third time to the ICCUB, as a center with a highly competitive strategic research programmes in the frontiers of knowledge.

The Institute of Cosmos Sciences of the University of Barcelona (ICCUB), recognized as a Unit of Excellence under the Severo Ochoa and María de Maeztu program, the highest distinction awarded to research institutes or centers in Spain, is launching a pre-selection call for  at least six PhD fellowships as part of its María de Maeztu Strategic Program. This initiative reflects ICCUB’s strong commitment to scientific excellence and the advancement of emerging research talent.

This pre-selection aims to identify highly motivated national and international candidates interested in pursuing a PhD in one of ICCUB’s core research areas: cosmology, astrophysics, gravitational waves, quantum technologies, and particle physics. Selected candidates will be invited to participate in the official selection process conducted by the University of Barcelona, which is required for formal admission and hiring.

ICCUB offers a dynamic, interdisciplinary research environment that fosters international collaboration and innovation, supported by cutting-edge infrastructure and a vibrant academic community. Located in Barcelona, a global hub for science and technology, the institute provides an ideal setting for early-stage researchers to launch their scientific careers while enjoying a rich and multicultural lifestyle.

The institute is actively involved in several major international collaborations, including LHCb, DESI, and Euclid, and plays a leading role in gravitational wave experiments such as the Virgo Collaboration, the Einstein Telescope Collaboration, and the LISA Consortium. ICCUB also contributes to large-scale astronomical surveys like ESA-Gaia, Weave, and SDSS-IV, as well as electromagnetic follow-up missions across various wavelengths, including BlackGEM, MAGIC, and LST.

About this project:

The successful applicant will conduct original research focusing on gravitational wave physics, including gravitational wave data analysis and parameter estimation, breaking degeneracies in GW parameters, observations and modelling of GW progenitors, detector characterization, and novel developments for next-generation detectors.

They will be integrated in the gravitational waves group and work closely with colleagues in the ICCUB.

Opportunities at ICCUB:

The PhD fellows at ICCUB will benefit from a comprehensive and enriching training program designed to prepare them for successful careers in academia, industry, or scientific outreach. Each doctoral project is embedded within one of ICCUB’s strategic research challenges. Supervision is provided by experienced ICCUB researchers, often involving co-supervision to foster interdisciplinary perspectives and collaborative mentorship.

In addition to research, students will engage in a tailored training program that includes both technical and transferable skills: scientific seminars, ICCUB Colloquia, advanced instrumentation workshops, data science, research ethics, science communication, project management, and career development. ICCUB also encourages international mobility through short-term research stays at leading institutions worldwide, enhancing global scientific exchange and visibility.

Fellowship terms:

• The fellowship includes funds for a predoctoral training contract for up to four years. The annual salary will be split into 12 monthly payments and distributed as follows:
  • The first year of PhD: 18.269,56 €/year
  • The second and third year of PhD: 22.032,36 € /year 
  • The fourth year of PhD: 24.468,15€/year
  • Predoctoral contracts are renewed annually for up to 4 years. Renewal is subject to satisfactory performance in the PhD studies and related research activities. If the doctoral degree is obtained before the predoctoral fellowship ends, a Postdoctoral Orientation Period (POP) can be funded from the time the doctoral degree is obtained until the end of the predoctoral fellowship, with a maximum duration of 12 months (i.e. predoc contract + POP = max. 4 years in total).
  • The fellowship includes full social security coverage through the Spanish Social Security system, providing access to the Spanish public health care system and pension and unemployment benefits.
• Up to 7.000€ to cover the enrolment fees for the UB’s Physics doctoral program (for a maximum of 4 years) and carry out short stays in other institutions, companies or universities abroad. The research stays must have a minimum duration of one month and must be authorized by the doctoral supervisor/s.

• For full details, refer to the 2024 ‘Centros de Excelencia «Severo Ochoa» y Unidades «María de Maeztu»’ call for proposals, within the Plan Estatal de Investigación Científica y Técnica y de Innovación 2021–2023 (Articles 10, 11, and 29).

Eligibility criteria:

The fellowships are addressed to graduate students of any nationality who fulfil the following eligibility criteria:

• Applicants must hold a Bachelor’s and a Master’s Degree in Physics, Mathematics, Astronomy, Particle Physics, Cosmology, Electronics, Semiconductor Technology, Photonics, Quantum Technologies, Computer Science or a related discipline by September 2026
• Be eligible for full-time enrollment in the UB Physics doctoral program for the 2026-2027 academic year by the time the fellowship starts, between September 2026 and January 2027.
• Applicants must not hold a doctoral degree. Moreover, applicants are not eligible if they have benefited from a predoctoral training fellowship under the ‘Plan Estatal de Investigación, Desarrollo e Innovación Tecnológica’ or any of the previous Spanish National Plans by MICIU/AEI.
• Applicants must have a thesis supervisor affiliated with the Institute of Cosmos Sciences.

Preferred skills:

• An interest in computational modeling.
• Working knowledge of the Linux operating systems.
• The ability to collaborate and communicate well in English.
• Good knowledge of the Python programming language, the knowledge of C will be considered an asset.
• A solid background in general relativity, nuclear physics, and astrophysics is a plus.

Selection criteria:

A score of up to 100 points will be awarded, on the bases of the following criteria:

1. Candidate's academic and/or scientific-technical experience, up to 50 points
   1. Scientific and technical contributions, up to 45 points The academic record and other curricular merits of the candidate will be assessed, as well as their suitability for the tasks to be carried out based on training and professional experience.
   2. Mobility and internationalization, up to 5 points Short-term research stays in national and international institutions, universities, and industry will be assessed, considering the prestige of the entity hosting the stay and the activity carried out therein, as well as the impact of the research stays on the research career path of the candidate.
2. Suitability of the candidate for the research activities to be carried out in the funded project, up to 50 points

The candidate's suitability for the program, project, and planned research activities will be evaluated based on their prior training and experience. In this context, consideration will be given to the added value that undertaking the project would bring to their research career, as well as the value the candidate would contribute to the host institution and research groups.

If two or more applications receive the same final score, preference will be given to the candidate with the highest score for criterion 1. If the candidates remain tied, a draw will be made to select the winning candidate.

Application Process:

The entire application process will be completed online. To apply, please complete the application form and provide contact details for two referees. After submission, you will receive instructions on how to upload the following documents:

• Curriculum Vitae, we welcome to use of the AEI template but this is not mandatory, in Spanish or English, which must list the merits the candidate wishes to be considered. The curriculum vitae template can be found here.
• Official transcripts of BSc and MSc studies in PDF format, showing grades obtained. If the academic transcripts are not in Catalan, Spanish or English, applicants should also attach a translation in one of the above-mentioned languages, and the grading system should be explained.
• Motivation letter with statement of research expertise and interests  and justificationof  their fit to the  project (max 3 pages).
• The contact of two Reference Letter writers (referees will be contacted directly)

Reference letters must be sent directly by the referees through the on-line application system (the system will contact these scientists you named, asking them to submit their letters of reference after a few working days). Applications will only be considered once at least one reference letter has been received.

Please note:

• In case of multiple applications to this call, the applicant should clearly indicate in their statement all the applications submitted or planned and indicate their prioritization in the motivation letter.
• For any questions regarding the application process, please contact secretaria@icc.ub.edu.
• Candidates must ensure that all information is included before the deadline. Incomplete applications will not be considered.

Important: Candidates who are shortlisted through the ICCUB pre-selection process will be invited to apply to the University of Barcelona’s call.

Key dates:

Application deadline: Until filled. Review of the applications will start on December 1st, 2025

Final resolution: February 2026

Pre-selection process:

The evaluation and pre-selection of the candidates will be conducted by the ICCUB María de Maeztu Committee for Predoctoral Training, following the guidelines set by the 2024 ‘Centros de Excelencia «Severo Ochoa» y Unidades «María de Maeztu»’ call for proposals, following the procedure below:

• The selection will be based on the evaluation criteria described before.
• At the late stages of the pre-selection process, short-listed candidates will be contacted for a personal interview.
• All applicants will be informed of the final pre-selection decision by February 2026.

ICCUB follows in its selection processes a gender equality opportunity policy and a non-discrimination policy based on age, ethnic or social origin, religion or belief, sexual orientation, language and disability.

Funding:

These positions are financed by the State Agency for Research of the Spanish Ministry of Science, Innovation and Universities through the "Unit of Excellence María de Maeztu 04/2019-03/2031" awarded to the Institute of Cosmos Sciences, grant CEX2024-001451-M funded by MICIU/AEI/10.13039/501100011033.

The Unit of Excellence Maria de Maeztu recognition has been awarded by the Spanish Government in 2025 for the third time to the ICCUB, as a center with a highly competitive strategic research programmes in the frontiers of knowledge.

The Institute of Cosmos Sciences of the University of Barcelona (ICCUB) invites applications for two postdoctoral positions and one ICCUB Postdoctoral Fellowship, offered under the framework of its Unit of Excellence Maria de Maeztu. All positions are funded for up to  3 years.

The three scientific profiles are as follows:

• Position in Beyond the standard models of cosmology and particle physics
• Position in Gravitational wave physics
• Position in Quantum Resources for Science and Technology

These positions are part of a dynamic and interdisciplinary research environment at one of Europe’s leading centers in cosmology, astrophysics, and particle physics. The Institute of Cosmos Sciences (ICCUB) at the University of Barcelona, established in 2006, focuses on cosmology, astrophysics, particle physics, quantum physics, and nuclear physics. With over 70 scientists, 20 engineers, and 90 postdoctoral researchers and PhD students (35% international), ICCUB collaborates internationally on projects like Gaia, LHCb, Virgo, MAGIC, CTA, and DESI. It also has an Advanced Technology Unit supporting experimental research requiring cutting-edge technology. 

Requirements:

Applicants must hold a PhD in Physics, Astrophysics, or a closely related field by the start date of the contract, approximately in October 2026. We are looking for motivated researchers with a strong track record and a collaborative spirit.

Employment Terms:

• Duration: up to 3 years
• Start Date: Preferably by Fall 2026 (flexibility possible for parental or special circumstances)
• Salary: 
  • Maria de Maeztu Postdoctoral Positions: Approx. 36.360€/year (gross), including full social security and public healthcare coverage for the researcher, spouse or registered partner and children
  • ICCUB Postdoctoral Fellowship: Approx. 42.900€/year (gross), including full social security and public healthcare coverage for the researcher, spouse or registered partner and children
• Research Support: 
  • Fellowship: €8,000/year for travel and training
  • Postdoctoral Positions: €5,000/year for travel and training
• Access to ICCUB’s advanced computational infrastructure, training programs, and career development resources

Equal Employment Opportunity Statement

ICCUB offers and promotes a diverse and inclusive environment and welcomes applicants regardless of age, disability, gender, nationality, race, religion or sexual orientation (for additional information please see the Diversity, Equity and Inclusion Commission. Job seekers in need of a reasonable accommodation to complete the application process should call or email secretaria@icc.ub.edu with their request.

Application Process:

To apply, please complete the application form and provide contact details for three referees. After submission, you will receive instructions to upload the following documents:

• Curriculum Vitae
• Cover Letter
• Research statement (max 4 pp) outlining research experience, interests, research plan and how the candidate’s profiles and research plan  would fit with the scientific profile of the position(s)
• Publication List
• The contact of three Reference Letter writers (referees will be contacted directly)

Reference letters must be sent directly by the referees through the on-line application system (the system will contact these scientists you named, asking them to submit their letters of reference after a few working days). Applications will only be considered once at least two reference letters have been received.

Note: Applicants should select their preferred job offer.

Note: For questions regarding the application process, please contact Esther Pallarès at secretaria@icc.ub.edu.

Deadline

Application deadline: November 30th, 2025
Review of applications will begin immediately after the deadline and will continue until all positions are filled.

Selection process:

The selection process consists of two phases: merit-based evaluation and an interview.

1. Merit-Based Evaluation

The Selection Committee will verify and assess the merits documented by the applicants. The maximum score for this phase is 80 points, distributed across the following categories:

Curriculum Vitae — Maximum: 30 points

The following aspects will be assessed:

• Scientific and technical contributions in the relevant research field.
• Quality and impact of publications, particularly those where the applicant is the lead author.
• Participation in research projects, collaborations, and scientific dissemination activities.
• Teaching experience, supervision of academic work and mentoring (e.g., theses, dissertations).

Alignment with the María de Maeztu Challenge — Maximum: 30 points

The following aspects will be assessed:

• A research statement that is ambitious, innovative, and clearly aligned with the objectives of the María de Maeztu Challenge.
• Potential for high-impact contributions within the proposed research line.
• Strategic use of relevant infrastructures and resources.

Reference Letters — Maximum: 20 points

The following aspects will be assessed:

• Strength and relevance of the recommendations.
• Evidence of the applicant’s research capabilities, independence, and potential for future contributions.

2. Interview: maximum 20 points

Applicants who score at least 50 points in the merit-based evaluation will be invited to an interview. The interview will be conducted in English and may take place online via a video conferencing platform.

Format and Content

• A presentation by the candidate: The presentation will last up to 20 minutes.
• Applicants will present their professional profile, focusing on how it aligns with the position and the María de Maeztu Challenge.
• They will also outline their vision for future scientific development and how they plan to contribute to the research environment.

Following the presentation, the Selection Committee may ask questions related to:

• The applicant’s research background and achievements.
• The proposed research statement.
• Any other relevant aspects of the application.

Scoring Criteria — Maximum: 20 points

• Up to 10 points for the alignment of the applicant’s profile with the objectives of the position.
• Up to 10 points for the clarity, feasibility, and impact of the applicant’s future research vision.

A minimum of 10 points is required to pass the interview phase.

Funding:

These positions are financed by the State Agency for Research of the Spanish Ministry of Science, Innovation and Universities through the "Unit of Excellence María de Maeztu 04/2019-03/2031" awarded to the Institute of Cosmos Sciences, grant CEX2024-001451-M funded by MICIU/AEI/10.13039/501100011033.

The Unit of Excellence Maria de Maeztu recognition has been awarded by the Spanish Government in 2025 for the third time to the ICCUB, as a center with a highly competitive strategic research programmes in the frontiers of knowledge.

The Institute of Cosmos Sciences of the University of Barcelona (ICCUB), recognized as a Unit of Excellence under the Severo Ochoa and María de Maeztu program, the highest distinction awarded to research institutes or centers in Spain, is launching a pre-selection call for  at least six PhD fellowships as part of its María de Maeztu Strategic Program. This initiative reflects ICCUB’s strong commitment to scientific excellence and the advancement of emerging research talent.

This pre-selection aims to identify highly motivated national and international candidates interested in pursuing a PhD in one of ICCUB’s core research areas: cosmology, astrophysics, gravitational waves, quantum technologies, and particle physics. Selected candidates will be invited to participate in the official selection process conducted by the University of Barcelona, which is required for formal admission and hiring.

ICCUB offers a dynamic, interdisciplinary research environment that fosters international collaboration and innovation, supported by cutting-edge infrastructure and a vibrant academic community. Located in Barcelona, a global hub for science and technology, the institute provides an ideal setting for early-stage researchers to launch their scientific careers while enjoying a rich and multicultural lifestyle.

The institute is actively involved in several major international collaborations, including LHCb, DESI, and Euclid, and plays a leading role in gravitational wave experiments such as the Virgo Collaboration, the Einstein Telescope Collaboration, and the LISA Consortium. ICCUB also contributes to large-scale astronomical surveys like ESA-Gaia, Weave, and SDSS-IV, as well as electromagnetic follow-up missions across various wavelengths, including BlackGEM, MAGIC, and LST.

Research project:

The fields of quantum science and technology have experienced remarkable recent progress, largely fueled by the development of quantum platforms that offer high-fidelity control over individual quantum degrees of freedom. Laser-cooled neutral atoms, in particular, have become a successful and versatile platform for applications like quantum simulation, quantum metrology, and digital quantum computing. Prime examples of this advancement include quantum-gas microscopes utilizing atoms in optical lattices, and Rydberg atomic arrays based on optical-tweezer traps.

Our experimental project aims to construct a novel ultracold-atom experiment designed to exploit the high programmability of individual optical tweezers for preparing low-entropy quantum many-body systems. This new experimental apparatus, to be built in the Physics Faculty of the Universitat de Barcelona (UB), will combine the best features of optical tweezers and optical lattices to create a versatile machine for quantum simulation and quantum optics studies. Specifically, we will follow a bottom-up approach: atoms will first be trapped, detected, and cooled close to their motional ground state before being precisely combined into interacting many-atom systems.

A primary goal for this new machine will be to delve into the study of interacting many-body quantum walks. This research direction could be used to efficiently sample certain quantum states, a problem with high computational complexity currently discussed in the context of probing quantum advantage. In a different direction, our system might provide an alternative route towards the preparation of ground states in systems of ultracold atoms, over conventional evaporative cooling techniques. Finally, our platform will also offer a way of probing cooperative light-matter phenomena in well-defined atomic ensembles.

Tasks to be performed by the PhD student:

The successful candidate will play a key role in the design, construction and demonstration of a novel quantum platform based on laser-cooled atoms. As a whole, this PhD project will take place at the intersection of atomic physics, quantum science and hands-on experimental engineering. Many fundamental techniques of cold-atom physics techniques will be mastered during the project, such as magneto-optical trapping, Raman sideband cooling and single-atom trapping and detection. On the technical side, the project will involve tasks requiring ultra-high vacuum systems, the assembly of photonic laser systems as well as the use of control electronics.

The PhD student will work in a small team of experimentalists, with a total of 3-4 members, led by Dr. Antonio Rubio-Abadal. To fulfill the goals of the project, the team will also stay in close contact with theory collaborators within the department (ManboQu), as well with the other quantum labs at UB (QComms). Additionally, the team will also benefit from working within the vibrant network of quantum research in the area of Barcelona.

Opportunities at ICCUB:

The PhD fellows at ICCUB will benefit from a comprehensive and enriching training program designed to prepare them for successful careers in academia, industry, or scientific outreach. Each doctoral project is embedded within one of ICCUB’s strategic research challenges. Supervision is provided by experienced ICCUB researchers, often involving co-supervision to foster interdisciplinary perspectives and collaborative mentorship.

In addition to research, students will engage in a tailored training program that includes both technical and transferable skills: scientific seminars, ICCUB Colloquia, advanced instrumentation workshops, data science, research ethics, science communication, project management, and career development. ICCUB also encourages international mobility through short-term research stays at leading institutions worldwide, enhancing global scientific exchange and visibility.

Fellowship terms:

• The fellowship includes funds for a predoctoral training contract for up to four years. The annual salary will be split into 12 monthly payments and distributed as follows:
  • The first year of PhD: 18.269,56 €/year
  • The second and third year of PhD: 22.032,36 € /year 
  • The fourth year of PhD: 24.468,15€/year
  • Predoctoral contracts are renewed annually for up to 4 years. Renewal is subject to satisfactory performance in the PhD studies and related research activities. If the doctoral degree is obtained before the predoctoral fellowship ends, a Postdoctoral Orientation Period (POP) can be funded from the time the doctoral degree is obtained until the end of the predoctoral fellowship, with a maximum duration of 12 months (i.e. predoc contract + POP = max. 4 years in total).
  • The fellowship includes full social security coverage through the Spanish Social Security system, providing access to the Spanish public health care system and pension and unemployment benefits.
• Up to 7.000€ to cover the enrolment fees for the UB’s Physics doctoral program (for a maximum of 4 years) and carry out short stays in other institutions, companies or universities abroad. The research stays must have a minimum duration of one month and must be authorized by the doctoral supervisor/s.

• For full details, refer to the 2024 ‘Centros de Excelencia «Severo Ochoa» y Unidades «María de Maeztu»’ call for proposals, within the Plan Estatal de Investigación Científica y Técnica y de Innovación 2021–2023 (Articles 10, 11, and 29).

Eligibility criteria:

The fellowships are addressed to graduate students of any nationality who fulfil the following eligibility criteria:

• Applicants must hold a Bachelor’s and a Master’s Degree in Physics, Mathematics, Astronomy, Particle Physics, Cosmology, Electronics, Semiconductor Technology, Photonics, Quantum Technologies, Computer Science or a related discipline by September 2026
• Be eligible for full-time enrollment in the UB Physics doctoral program for the 2026-2027 academic year by the time the fellowship starts, between September 2026 and January 2027.
• Applicants must not hold a doctoral degree. Moreover, applicants are not eligible if they have benefited from a predoctoral training fellowship under the ‘Plan Estatal de Investigación, Desarrollo e Innovación Tecnológica’ or any of the previous Spanish National Plans by MICIU/AEI.
• Applicants must have a thesis supervisor affiliated with the Institute of Cosmos Sciences.
• The thesis supervisor is Antonio Rubio Abadal, Antonio.rubio@fqa.ub.edu. More information: https://manboqu.fqa.ub.edu/home

Preferred skills:

• Experience with optical lasers systems
• Knowledge of quantum physics and laser-cooling techniques
• Experience with control electronics
• Experience with vacuum systems

Selection criteria:

A score of up to 100 points will be awarded, on the bases of the following criteria:

1. Candidate's academic and/or scientific-technical experience, up to 50 points
   1. Scientific and technical contributions, up to 45 points The academic record and other curricular merits of the candidate will be assessed, as well as their suitability for the tasks to be carried out based on training and professional experience.
   2. Mobility and internationalization, up to 5 points Short-term research stays in national and international institutions, universities, and industry will be assessed, considering the prestige of the entity hosting the stay and the activity carried out therein, as well as the impact of the research stays on the research career path of the candidate.
2. Suitability of the candidate for the research activities to be carried out in the funded project, up to 50 points

The candidate's suitability for the program, project, and planned research activities will be evaluated based on their prior training and experience. In this context, consideration will be given to the added value that undertaking the project would bring to their research career, as well as the value the candidate would contribute to the host institution and research groups.

If two or more applications receive the same final score, preference will be given to the candidate with the highest score for criterion 1. If the candidates remain tied, a draw will be made to select the winning candidate.

Application Process:

The entire application process will be completed online. To apply, please complete the application form and provide contact details for two referees. After submission, you will receive instructions on how to upload the following documents:

• Curriculum Vitae, we welcome to use of the AEI template but this is not mandatory, in Spanish or English, which must list the merits the candidate wishes to be considered. The curriculum vitae template can be found here.
• Official transcripts of BSc and MSc studies in PDF format, showing grades obtained. If the academic transcripts are not in Catalan, Spanish or English, applicants should also attach a translation in one of the above-mentioned languages, and the grading system should be explained.
• Motivation letter with statement of research expertise and interests  and justificationof  their fit to the  project (max 3 pages).
• The contact of two Reference Letter writers (referees will be contacted directly)

Reference letters must be sent directly by the referees through the on-line application system (the system will contact these scientists you named, asking them to submit their letters of reference after a few working days). Applications will only be considered once at least one reference letter has been received.

Please note:

• In case of multiple applications to this call, the applicant should clearly indicate in their statement all the applications submitted or planned and indicate their prioritization in the motivation letter.
• For any questions regarding the application process, please contact secretaria@icc.ub.edu.
• Candidates must ensure that all information is included before the deadline. Incomplete applications will not be considered.

Important: Candidates who are shortlisted through the ICCUB pre-selection process will be invited to apply to the University of Barcelona’s call.

Key dates:

Application deadline: Until filled. Review of the applications will start on December 1st, 2025

Final resolution: February 2026

Pre-selection process:

The evaluation and pre-selection of the candidates will be conducted by the ICCUB María de Maeztu Committee for Predoctoral Training, following the guidelines set by the 2024 ‘Centros de Excelencia «Severo Ochoa» y Unidades «María de Maeztu»’ call for proposals, following the procedure below:

• The selection will be based on the evaluation criteria described before.
• At the late stages of the pre-selection process, short-listed candidates will be contacted for a personal interview.
• All applicants will be informed of the final pre-selection decision by February 2026.

ICCUB follows in its selection processes a gender equality opportunity policy and a non-discrimination policy based on age, ethnic or social origin, religion or belief, sexual orientation, language and disability.

Funding:

These positions are financed by the State Agency for Research of the Spanish Ministry of Science, Innovation and Universities through the "Unit of Excellence María de Maeztu 04/2019-03/2031" awarded to the Institute of Cosmos Sciences, grant CEX2024-001451-M funded by MICIU/AEI/10.13039/501100011033.

The Unit of Excellence Maria de Maeztu recognition has been awarded by the Spanish Government in 2025 for the third time to the ICCUB, as a center with a highly competitive strategic research programmes in the frontiers of knowledge.

The Institute of Cosmos Sciences of the University of Barcelona (ICCUB) invites applications for a 3-year Postdoctoral position in Beyond the standard models of cosmology and particle physics, as part of its current call for two postdoctoral positions and one ICCUB Postdoctoral Fellowship, offered under the framework of its Unit of Excellence Maria de Maeztu. 

These positions are part of a dynamic and interdisciplinary research environment at one of Europe’s leading centers in cosmology, astrophysics, and particle physics. The Institute of Cosmos Sciences (ICCUB) at the University of Barcelona, established in 2006, focuses on cosmology, astrophysics, particle physics, quantum physics, and nuclear physics. With over 70 scientists, 20 engineers, and 90 postdoctoral researchers and PhD students (35% international), ICCUB collaborates internationally on projects like Gaia, LHCb, Virgo, MAGIC, CTA, and DESI. It also has an Advanced Technology Unit supporting experimental research requiring cutting-edge technology. 

Description of the postdoctoral position:

Efforts to understand the ultimate laws of nature and the structure and composition of the Universe have so far been carried out almost independently within the fields of particle physics, astrophysics, and cosmology. This siloing is now hampering progress, as the disciplines that study the very large and the very small have become inextricably intertwined. Each has converged to its own extremely successful Standard Model (SM): the SM of particle physics (PP) and the standard cosmological model or Lambda Cold Dark Matter (LCDM) model, with many aspects in common. Yet both models show signs of being incomplete, pointing to the need for new physics with profound implications for our understanding of matter, forces, and the Universe's components themselves.

Finding out what that new physics may or may not be can only be achieved with a coordinated approach from theoretical modelling to data analysis, and a holistic context covering expertise in all the disciplines involved.  The successful candidate should have demonstrated expertise and interest  in one or more of these aspects:  

- Precision measurements in Experimental Particle Physics  

- Robust analysis and interpretation of  cosmological data especially galaxy surveys

- Neutrino properties at the intersection of particle physics and cosmology 

- Dark matter distribution, clustering and detection from cosmic scales down to Earth. 

The successful candidate is expected to work across different research groups at the ICCUB:

• Cosmology and Large Scale Structure
• Particle Physics Phenomenology
• Galaxy Structure and Evolution
• Experimental High Energy Physics

Requirements:

Applicants must hold a PhD in Physics, Astrophysics, or a closely related field by the start date of the contract, approximately in October 2026. We are looking for motivated researchers with a strong track record and a collaborative spirit.

Employment Terms:

• Duration: up to 3 years
• Start Date: Preferably by Fall 2026 (flexibility possible for parental or special circumstances)
• Salary: 
  • Maria de Maeztu Postdoctoral Positions: Approx. 36.360€/year (gross), including full social security and public healthcare coverage for the researcher, spouse or registered partner and children
  • ICCUB Postdoctoral Fellowship: Approx. 42.900€/year (gross), including full social security and public healthcare coverage for the researcher, spouse or registered partner and children
• Research Support: 
  • Fellowship: €8,000/year for travel and training
  • Postdoctoral Positions: €5,000/year for travel and training
• Access to ICCUB’s advanced computational infrastructure, training programs, and career development resources

Equal Employment Opportunity Statement

ICCUB offers and promotes a diverse and inclusive environment and welcomes applicants regardless of age, disability, gender, nationality, race, religion or sexual orientation (for additional information please see the Diversity, Equity and Inclusion Commission. Job seekers in need of a reasonable accommodation to complete the application process should call or email secretaria@icc.ub.edu with their request.

Application Process:

To apply, please complete the application form and provide contact details for three referees. After submission, you will receive instructions to upload the following documents:

• Curriculum Vitae
• Cover Letter 
• Research statement (max 4pp) outlining research experience, interests, research plan and how the candidate’s profiles and research plan would fit with the scientific profile of the position(s)
• Publication List
• Three Reference Letters (referees will be contacted directly)

Reference letters must be sent directly by the referees through the on-line application system (the system will contact these scientists you named, asking them to submit their letters of reference after a few working days). 

Note: Applicants should select their preferred job offer.

Note: Your application will only be considered complete once at least two reference letters have been received.

For questions regarding the application process, please contact Esther Pallarès at secretaria@icc.ub.edu.

Deadline

Application deadline: November 30th, 2025
Review of applications will begin immediately after the deadline and will continue until all positions are filled.

Selection process:

The selection process consists of two phases: merit-based evaluation and an interview.

1. Merit-Based Evaluation

The Selection Committee will verify and assess the merits documented by the applicants. The maximum score for this phase is 80 points, distributed across the following categories:

Curriculum Vitae — Maximum: 30 points

The following aspects will be assessed:

• Scientific and technical contributions in the relevant research field.
• Quality and impact of publications, particularly those where the applicant is the lead author.
• Participation in research projects, collaborations, and scientific dissemination activities.
• Teaching experience, supervision of academic work and mentoring (e.g., theses, dissertations).

Alignment with the María de Maeztu Challenge — Maximum: 30 points

The following aspects will be assessed:

• A research statement that is ambitious, innovative, and clearly aligned with the objectives of the María de Maeztu Challenge.
• Potential for high-impact contributions within the proposed research line.
• Strategic use of relevant infrastructures and resources.

Reference Letters — Maximum: 20 points

The following aspects will be assessed:

• Strength and relevance of the recommendations.
• Evidence of the applicant’s research capabilities, independence, and potential for future contributions.

2. Interview: maximum 20 points

Applicants who score at least 50 points in the merit-based evaluation will be invited to an interview. The interview will be conducted in English and may take place online via a video conferencing platform.

Format and Content

• A presentation by the candidate: The presentation will last up to 20 minutes.
• Applicants will present their professional profile, focusing on how it aligns with the position and the María de Maeztu Challenge.
• They will also outline their vision for future scientific development and how they plan to contribute to the research environment.

Following the presentation, the Selection Committee may ask questions related to:

• The applicant’s research background and achievements.
• The proposed research statement.
• Any other relevant aspects of the application.

Scoring Criteria — Maximum: 20 points

• Up to 10 points for the alignment of the applicant’s profile with the objectives of the position.
• Up to 10 points for the clarity, feasibility, and impact of the applicant’s future research vision.

A minimum of 10 points is required to pass the interview phase.

Funding:

These positions are financed by the State Agency for Research of the Spanish Ministry of Science, Innovation and Universities through the "Unit of Excellence María de Maeztu 04/2019-03/2031" awarded to the Institute of Cosmos Sciences, grant CEX2024-001451-M funded by MICIU/AEI/10.13039/501100011033.

The Unit of Excellence Maria de Maeztu recognition has been awarded by the Spanish Government in 2025 for the third time to the ICCUB, as a center with a highly competitive strategic research programmes in the frontiers of knowledge.

The Institute of Cosmos Sciences of the University of Barcelona (ICCUB), recognized as a Unit of Excellence under the Severo Ochoa and María de Maeztu program, the highest distinction awarded to research institutes or centers in Spain, is launching a pre-selection call for  at least six PhD fellowships as part of its María de Maeztu Strategic Program. This initiative reflects ICCUB’s strong commitment to scientific excellence and the advancement of emerging research talent.

This pre-selection aims to identify highly motivated national and international candidates interested in pursuing a PhD in one of ICCUB’s core research areas: cosmology, astrophysics, gravitational waves, quantum technologies, and particle physics. Selected candidates will be invited to participate in the official selection process conducted by the University of Barcelona, which is required for formal admission and hiring.

ICCUB offers a dynamic, interdisciplinary research environment that fosters international collaboration and innovation, supported by cutting-edge infrastructure and a vibrant academic community. Located in Barcelona, a global hub for science and technology, the institute provides an ideal setting for early-stage researchers to launch their scientific careers while enjoying a rich and multicultural lifestyle.

The institute is actively involved in several major international collaborations, including LHCb, DESI, and Euclid, and plays a leading role in gravitational wave experiments such as the Virgo Collaboration, the Einstein Telescope Collaboration, and the LISA Consortium. ICCUB also contributes to large-scale astronomical surveys like ESA-Gaia, Weave, and SDSS-IV, as well as electromagnetic follow-up missions across various wavelengths, including BlackGEM, MAGIC, and LST.

Opportunities at ICCUB:

The PhD fellows at ICCUB will benefit from a comprehensive and enriching training program designed to prepare them for successful careers in academia, industry, or scientific outreach. Each doctoral project is embedded within one of ICCUB’s strategic research challenges. Supervision is provided by experienced ICCUB researchers, often involving co-supervision to foster interdisciplinary perspectives and collaborative mentorship.

In addition to research, students will engage in a tailored training program that includes both technical and transferable skills: scientific seminars, ICCUB Colloquia, advanced instrumentation workshops, data science, research ethics, science communication, project management, and career development. ICCUB also encourages international mobility through short-term research stays at leading institutions worldwide, enhancing global scientific exchange and visibility.

Available positions:

Detailed descriptions of the research projects and host groups can be found in the links

• Building interacting quantum systems one atom at a time
• Gravitational-wave physics
• Gravitational-wave lensing
• Fundamental Physics and Technology: From Gravitational Waves to Quantum Detectors
• 2 positions on Physics Beyond  the standard cosmological model and the standard model of particle physics

Fellowship terms:

• The fellowship includes funds for a predoctoral training contract for up to four years. The annual salary will be split into 12 monthly payments and distributed as follows:
  • The first year of PhD: 18.269,56 €/year
  • The second and third year of PhD: 22.032,36 € /year 
  • The fourth year of PhD: 24.468,15€/year
  • Predoctoral contracts are renewed annually for up to 4 years. Renewal is subject to satisfactory performance in the PhD studies and related research activities. If the doctoral degree is obtained before the predoctoral fellowship ends, a Postdoctoral Orientation Period (POP) can be funded from the time the doctoral degree is obtained until the end of the predoctoral fellowship, with a maximum duration of 12 months (i.e. predoc contract + POP = max. 4 years in total).
  • The fellowship includes full social security coverage through the Spanish Social Security system, providing access to the Spanish public health care system and pension and unemployment benefits.
• Up to 7.000€ to cover the enrolment fees for the UB’s Physics doctoral program (for a maximum of 4 years) and carry out short stays in other institutions, companies or universities abroad. The research stays must have a minimum duration of one month and must be authorized by the doctoral supervisor/s.

• For full details, refer to the 2024 ‘Centros de Excelencia «Severo Ochoa» y Unidades «María de Maeztu»’ call for proposals, within the Plan Estatal de Investigación Científica y Técnica y de Innovación 2021–2023 (Articles 10, 11, and 29).

Eligibility criteria:

The fellowships are addressed to graduate students of any nationality who fulfil the following eligibility criteria:

• Applicants must hold a Bachelor’s and a Master’s Degree in Physics, Mathematics, Astronomy, Particle Physics, Cosmology, Electronics, Semiconductor Technology, Photonics, Quantum Technologies, Computer Science or a related discipline by September 2026
• Be eligible for full-time enrollment in the UB Physics doctoral program for the 2026-2027 academic year by the time the fellowship starts, between September 2026 and January 2027.
• Applicants must not hold a doctoral degree. Moreover, applicants are not eligible if they have benefited from a predoctoral training fellowship under the ‘Plan Estatal de Investigación, Desarrollo e Innovación Tecnológica’ or any of the previous Spanish National Plans by MICIU/AEI.
• Applicants must have a thesis supervisor affiliated with the Institute of Cosmos Sciences.

Selection criteria:

A score of up to 100 points will be awarded, on the bases of the following criteria:

1. Candidate's academic and/or scientific-technical experience, up to 50 points
   1. Scientific and technical contributions, up to 45 points The academic record and other curricular merits of the candidate will be assessed, as well as their suitability for the tasks to be carried out based on training and professional experience.
   2. Mobility and internationalization, up to 5 points Short-term research stays in national and international institutions, universities, and industry will be assessed, considering the prestige of the entity hosting the stay and the activity carried out therein, as well as the impact of the research stays on the research career path of the candidate.
2. Suitability of the candidate for the research activities to be carried out in the funded project, up to 50 points

The candidate's suitability for the program, project, and planned research activities will be evaluated based on their prior training and experience. In this context, consideration will be given to the added value that undertaking the project would bring to their research career, as well as the value the candidate would contribute to the host institution and research groups.

If two or more applications receive the same final score, preference will be given to the candidate with the highest score for criterion 1. If the candidates remain tied, a draw will be made to select the winning candidate.

Application Process:

The entire application process will be completed online. To apply, please complete the application form and provide contact details for two referees. After submission, you will receive instructions on how to upload the following documents:

• Curriculum Vitae, we welcome to use of the AEI template but this is not mandatory, in Spanish or English, which must list the merits the candidate wishes to be considered. The curriculum vitae template can be found here.
• Official transcripts of BSc and MSc studies in PDF format, showing grades obtained. If the academic transcripts are not in Catalan, Spanish or English, applicants should also attach a translation in one of the above-mentioned languages, and the grading system should be explained.
• Motivation letter with statement of research expertise and interests  and justificationof  their fit to the  project (max 3 pages).
• The contact of two Reference Letter writers (referees will be contacted directly)

Reference letters must be sent directly by the referees through the on-line application system (the system will contact these scientists you named, asking them to submit their letters of reference after a few working days). Applications will only be considered once at least one reference letter has been received.

Please note:

• In case of multiple applications to this call, the applicant should clearly indicate in their statement all the applications submitted or planned and indicate their prioritization in the motivation letter.
• For any questions regarding the application process, please contact secretaria@icc.ub.edu.
• Candidates must ensure that all information is included before the deadline. Incomplete applications will not be considered.

Important: Candidates who are shortlisted through the ICCUB pre-selection process will be invited to apply to the University of Barcelona’s call.

Key dates:

Application deadline: Until filled. Review of the applications will start on December 1st, 2025

Final resolution: February 2026

Pre-selection process:

The evaluation and pre-selection of the candidates will be conducted by the ICCUB María de Maeztu Committee for Predoctoral Training, following the guidelines set by the 2024 ‘Centros de Excelencia «Severo Ochoa» y Unidades «María de Maeztu»’ call for proposals, following the procedure below:

• The selection will be based on the evaluation criteria described before.
• At the late stages of the pre-selection process, short-listed candidates will be contacted for a personal interview.
• All applicants will be informed of the final pre-selection decision by February 2026.

ICCUB follows in its selection processes a gender equality opportunity policy and a non-discrimination policy based on age, ethnic or social origin, religion or belief, sexual orientation, language and disability.

Funding:

These positions are financed by the State Agency for Research of the Spanish Ministry of Science, Innovation and Universities through the "Unit of Excellence María de Maeztu 04/2019-03/2031" awarded to the Institute of Cosmos Sciences, grant CEX2024-001451-M funded by MICIU/AEI/10.13039/501100011033.

The Unit of Excellence Maria de Maeztu recognition has been awarded by the Spanish Government in 2025 for the third time to the ICCUB, as a center with a highly competitive strategic research programmes in the frontiers of knowledge.

The Institute of Cosmos Sciences of the University of Barcelona (ICCUB), recognized as a Unit of Excellence under the Severo Ochoa and María de Maeztu program, the highest distinction awarded to research institutes or centers in Spain, is launching a pre-selection call for  at least six PhD fellowships as part of its María de Maeztu Strategic Program. This initiative reflects ICCUB’s strong commitment to scientific excellence and the advancement of emerging research talent.

This pre-selection aims to identify highly motivated national and international candidates interested in pursuing a PhD in one of ICCUB’s core research areas: cosmology, astrophysics, gravitational waves, quantum technologies, and particle physics. Selected candidates will be invited to participate in the official selection process conducted by the University of Barcelona, which is required for formal admission and hiring.

ICCUB offers a dynamic, interdisciplinary research environment that fosters international collaboration and innovation, supported by cutting-edge infrastructure and a vibrant academic community. Located in Barcelona, a global hub for science and technology, the institute provides an ideal setting for early-stage researchers to launch their scientific careers while enjoying a rich and multicultural lifestyle.

The institute is actively involved in several major international collaborations, including LHCb, DESI, and Euclid, and plays a leading role in gravitational wave experiments such as the Virgo Collaboration, the Einstein Telescope Collaboration, and the LISA Consortium. ICCUB also contributes to large-scale astronomical surveys like ESA-Gaia, Weave, and SDSS-IV, as well as electromagnetic follow-up missions across various wavelengths, including BlackGEM, MAGIC, and LST.

About this project:

The successful applicant will conduct original research related to, among other topics, the development of waveform approximants to analyze the observed GW events, and the impact of waveform distortions induced by lensing caused by galaxies, stars or other compact objects. These will support the detection of primordial black holes and black hole population studies by enabling the detection and interpretation of magnified, distant GW sources.

They will be integrated in the gravitational waves group and work closely with colleagues in the ICCUB.

Opportunities at ICCUB:

The PhD fellows at ICCUB will benefit from a comprehensive and enriching training program designed to prepare them for successful careers in academia, industry, or scientific outreach. Each doctoral project is embedded within one of ICCUB’s strategic research challenges. Supervision is provided by experienced ICCUB researchers, often involving co-supervision to foster interdisciplinary perspectives and collaborative mentorship.

In addition to research, students will engage in a tailored training program that includes both technical and transferable skills: scientific seminars, ICCUB Colloquia, advanced instrumentation workshops, data science, research ethics, science communication, project management, and career development. ICCUB also encourages international mobility through short-term research stays at leading institutions worldwide, enhancing global scientific exchange and visibility.

Fellowship terms:

• The fellowship includes funds for a predoctoral training contract for up to four years. The annual salary will be split into 12 monthly payments and distributed as follows:
  • The first year of PhD: 18.269,56 €/year
  • The second and third year of PhD: 22.032,36 € /year 
  • The fourth year of PhD: 24.468,15€/year
  • Predoctoral contracts are renewed annually for up to 4 years. Renewal is subject to satisfactory performance in the PhD studies and related research activities. If the doctoral degree is obtained before the predoctoral fellowship ends, a Postdoctoral Orientation Period (POP) can be funded from the time the doctoral degree is obtained until the end of the predoctoral fellowship, with a maximum duration of 12 months (i.e. predoc contract + POP = max. 4 years in total).
  • The fellowship includes full social security coverage through the Spanish Social Security system, providing access to the Spanish public health care system and pension and unemployment benefits.
• Up to 7.000€ to cover the enrolment fees for the UB’s Physics doctoral program (for a maximum of 4 years) and carry out short stays in other institutions, companies or universities abroad. The research stays must have a minimum duration of one month and must be authorized by the doctoral supervisor/s.

• For full details, refer to the 2024 ‘Centros de Excelencia «Severo Ochoa» y Unidades «María de Maeztu»’ call for proposals, within the Plan Estatal de Investigación Científica y Técnica y de Innovación 2021–2023 (Articles 10, 11, and 29).

Eligibility criteria:

The fellowships are addressed to graduate students of any nationality who fulfil the following eligibility criteria:

• Applicants must hold a Bachelor’s and a Master’s Degree in Physics, Mathematics, Astronomy, Particle Physics, Cosmology, Electronics, Semiconductor Technology, Photonics, Quantum Technologies, Computer Science or a related discipline by September 2026
• Be eligible for full-time enrollment in the UB Physics doctoral program for the 2026-2027 academic year by the time the fellowship starts, between September 2026 and January 2027.
• Applicants must not hold a doctoral degree. Moreover, applicants are not eligible if they have benefited from a predoctoral training fellowship under the ‘Plan Estatal de Investigación, Desarrollo e Innovación Tecnológica’ or any of the previous Spanish National Plans by MICIU/AEI.
• Applicants must have a thesis supervisor affiliated with the Institute of Cosmos Sciences.

Preferred skills:

• An interest in computational modeling.
• Working knowledge of the Linux operating systems.
• The ability to collaborate and communicate well in English.
• Good knowledge of the Python programming language, the knowledge of C will be considered an asset.
• A solid background in general relativity, nuclear physics, and astrophysics is a plus.

Selection criteria:

A score of up to 100 points will be awarded, on the bases of the following criteria:

1. Candidate's academic and/or scientific-technical experience, up to 50 points
   1. Scientific and technical contributions, up to 45 points The academic record and other curricular merits of the candidate will be assessed, as well as their suitability for the tasks to be carried out based on training and professional experience.
   2. Mobility and internationalization, up to 5 points Short-term research stays in national and international institutions, universities, and industry will be assessed, considering the prestige of the entity hosting the stay and the activity carried out therein, as well as the impact of the research stays on the research career path of the candidate.
2. Suitability of the candidate for the research activities to be carried out in the funded project, up to 50 points

The candidate's suitability for the program, project, and planned research activities will be evaluated based on their prior training and experience. In this context, consideration will be given to the added value that undertaking the project would bring to their research career, as well as the value the candidate would contribute to the host institution and research groups.

If two or more applications receive the same final score, preference will be given to the candidate with the highest score for criterion 1. If the candidates remain tied, a draw will be made to select the winning candidate.

Application Process:

The entire application process will be completed online. To apply, please complete the application form and provide contact details for two referees. After submission, you will receive instructions on how to upload the following documents:

• Curriculum Vitae, we welcome to use of the AEI template but this is not mandatory, in Spanish or English, which must list the merits the candidate wishes to be considered. The curriculum vitae template can be found here.
• Official transcripts of BSc and MSc studies in PDF format, showing grades obtained. If the academic transcripts are not in Catalan, Spanish or English, applicants should also attach a translation in one of the above-mentioned languages, and the grading system should be explained.
• Motivation letter with statement of research expertise and interests  and justificationof  their fit to the  project (max 3 pages).
• The contact of two Reference Letter writers (referees will be contacted directly)

Reference letters must be sent directly by the referees through the on-line application system (the system will contact these scientists you named, asking them to submit their letters of reference after a few working days). Applications will only be considered once at least one reference letter has been received.

Please note:

• In case of multiple applications to this call, the applicant should clearly indicate in their statement all the applications submitted or planned and indicate their prioritization in the motivation letter.
• For any questions regarding the application process, please contact secretaria@icc.ub.edu.
• Candidates must ensure that all information is included before the deadline. Incomplete applications will not be considered.

Important: Candidates who are shortlisted through the ICCUB pre-selection process will be invited to apply to the University of Barcelona’s call.

Key dates:

Application deadline: Until filled. Review of the applications will start on December 1st, 2025

Final resolution: February 2026

Pre-selection process:

The evaluation and pre-selection of the candidates will be conducted by the ICCUB María de Maeztu Committee for Predoctoral Training, following the guidelines set by the 2024 ‘Centros de Excelencia «Severo Ochoa» y Unidades «María de Maeztu»’ call for proposals, following the procedure below:

• The selection will be based on the evaluation criteria described before.
• At the late stages of the pre-selection process, short-listed candidates will be contacted for a personal interview.
• All applicants will be informed of the final pre-selection decision by February 2026.

ICCUB follows in its selection processes a gender equality opportunity policy and a non-discrimination policy based on age, ethnic or social origin, religion or belief, sexual orientation, language and disability.

Funding:

These positions are financed by the State Agency for Research of the Spanish Ministry of Science, Innovation and Universities through the "Unit of Excellence María de Maeztu 04/2019-03/2031" awarded to the Institute of Cosmos Sciences, grant CEX2024-001451-M funded by MICIU/AEI/10.13039/501100011033.

The Unit of Excellence Maria de Maeztu recognition has been awarded by the Spanish Government in 2025 for the third time to the ICCUB, as a center with a highly competitive strategic research programmes in the frontiers of knowledge.

The Institute of Cosmos Sciences of the University of Barcelona (ICCUB) invites applications for a 3-year Postdoctoral position in gravitational wave physics, as part of its current call for two postdoctoral positions and one ICCUB Postdoctoral Fellowship, offered under the framework of its Unit of Excellence Maria de Maeztu. 

The successful candidate will lead projects spanning both theoretical and data analysis aspects of gravitational wave science. Research topics may include, but not be limited to parameter estimation, gravitational lensing, numerical relativity simulations, detector characterization, mock data generation, neutron star asteroseismology, magnetohydrodynamic modeling of neutron stars and multimessenger signals, stellar/BH dynamics, tests of general relativity, relations to high energy and nuclear physics and connections to holography. The ICCUB is a member of the LVK Collaboration, the Einstein Telescope Collaboration and is contributing to the LISA mission on theoretical models, computing and instrumentation activities. We are also part of the Spanish RedONGRA network (Red Nacional en Ondas Gravitacionales), which fosters national collaboration in gravitational wave research. In addition, we are actively participating in surveys (ESA-Gaia, Weave, SDSS-IV) and EM follow-up missions at various wavelengths (BlackGEM, MAGIC and LSST), which allow scientists at the ICCUB (https://icc.ub.edu/research/gravitational-waves) to build an end-to-end understanding of all steps leading to GW sources. Prior research experience in gravitational wave data analysis is preferred, but not strictly required. Experience with large-scale computation, Bayesian methods, and/or machine learning/AI is considered a plus. 

These positions are part of a dynamic and interdisciplinary research environment at one of Europe’s leading centers in cosmology, astrophysics, and particle physics. The Institute of Cosmos Sciences (ICCUB) at the University of Barcelona, established in 2006, focuses on cosmology, astrophysics, particle physics, quantum physics, and nuclear physics. With over 70 scientists, 20 engineers, and 90 postdoctoral researchers and PhD students (35% international), ICCUB collaborates internationally on projects like Gaia, LHCb, Virgo, MAGIC, CTA, and DESI. It also has an Advanced Technology Unit supporting experimental research requiring cutting-edge technology. 

Requirements:

Applicants must hold a PhD in Physics, Astrophysics, or a closely related field by the start date of the contract, approximately in October 2026. We are looking for motivated researchers with a strong track record and a collaborative spirit.

Employment Terms:

• Duration:  up to 3 years
• Start Date: Preferably by Fall 2026 (flexibility possible for parental or special circumstances)
• Salary: 
  • Maria de Maeztu Postdoctoral Positions: Approx. 36.360€/year (gross), including full social security and public healthcare coverage for the researcher, spouse or registered partner and children
  • ICCUB Postdoctoral Fellowship: Approx. 42.900€/year (gross), including full social security and public healthcare coverage for the researcher, spouse or registered partner and children
• Research Support: 
  • Fellowship: €8,000/year for travel and training
  • Postdoctoral Positions: €5,000/year for travel and training
• Access to ICCUB’s advanced computational infrastructure, training programs, and career development resources

Equal Employment Opportunity Statement

ICCUB offers and promotes a diverse and inclusive environment and welcomes applicants regardless of age, disability, gender, nationality, race, religion or sexual orientation (for additional information please see the Diversity, Equity and Inclusion Commission. Job seekers in need of a reasonable accommodation to complete the application process should call or email secretaria@icc.ub.edu with their request.

Application Process:

To apply, please complete the application form and provide contact details for three referees. After submission, you will receive instructions to upload the following documents:

• Curriculum Vitae
• Cover Letter 
• Research statement (max 4pp) outlining research experience, interests, research plan and how the candidate’s profiles and research plan would fit with the scientific profile of the position(s)
• Publication List
• Three Reference Letters (referees will be contacted directly)

Reference letters must be sent directly by the referees through the on-line application system (the system will contact these scientists you named, asking them to submit their letters of reference after a few working days). 

Note: Applicants should select their preferred job offer.

Note: Your application will only be considered complete once at least two reference letters have been received.

For questions regarding the application process, please contact Esther Pallarès at secretaria@icc.ub.edu.

Deadline

Application deadline: November 30th, 2025
Review of applications will begin immediately after the deadline and will continue until all positions are filled.

Selection process:

The selection process consists of two phases: merit-based evaluation and an interview.

1. Merit-Based Evaluation

The Selection Committee will verify and assess the merits documented by the applicants. The maximum score for this phase is 80 points, distributed across the following categories:

Curriculum Vitae — Maximum: 30 points

The following aspects will be assessed:

• Scientific and technical contributions in the relevant research field.
• Quality and impact of publications, particularly those where the applicant is the lead author.
• Participation in research projects, collaborations, and scientific dissemination activities.
• Teaching experience, supervision of academic work and mentoring (e.g., theses, dissertations).

Alignment with the María de Maeztu Challenge — Maximum: 30 points

The following aspects will be assessed:

• A research statement that is ambitious, innovative, and clearly aligned with the objectives of the María de Maeztu Challenge.
• Potential for high-impact contributions within the proposed research line.
• Strategic use of relevant infrastructures and resources.

Reference Letters — Maximum: 20 points

The following aspects will be assessed:

• Strength and relevance of the recommendations.
• Evidence of the applicant’s research capabilities, independence, and potential for future contributions.

2. Interview: maximum 20 points

Applicants who score at least 50 points in the merit-based evaluation will be invited to an interview. The interview will be conducted in English and may take place online via a video conferencing platform.

Format and Content

• A presentation by the candidate: The presentation will last up to 20 minutes.
• Applicants will present their professional profile, focusing on how it aligns with the position and the María de Maeztu Challenge.
• They will also outline their vision for future scientific development and how they plan to contribute to the research environment.

Following the presentation, the Selection Committee may ask questions related to:

• The applicant’s research background and achievements.
• The proposed research statement.
• Any other relevant aspects of the application.

Scoring Criteria — Maximum: 20 points

• Up to 10 points for the alignment of the applicant’s profile with the objectives of the position.
• Up to 10 points for the clarity, feasibility, and impact of the applicant’s future research vision.

A minimum of 10 points is required to pass the interview phase.

Funding:

These positions are financed by the State Agency for Research of the Spanish Ministry of Science, Innovation and Universities through the "Unit of Excellence María de Maeztu 04/2019-03/2031" awarded to the Institute of Cosmos Sciences, grant CEX2024-001451-M funded by MICIU/AEI/10.13039/501100011033.

The Unit of Excellence Maria de Maeztu recognition has been awarded by the Spanish Government in 2025 for the third time to the ICCUB, as a center with a highly competitive strategic research programmes in the frontiers of knowledge.

The Institute of Cosmos Sciences of the University of Barcelona (ICCUB), recognized as a Unit of Excellence under the Severo Ochoa and María de Maeztu program, the highest distinction awarded to research institutes or centers in Spain, is launching a pre-selection call for  at least six PhD fellowships as part of its María de Maeztu Strategic Program. This initiative reflects ICCUB’s strong commitment to scientific excellence and the advancement of emerging research talent.

This pre-selection aims to identify highly motivated national and international candidates interested in pursuing a PhD in one of ICCUB’s core research areas: cosmology, astrophysics, gravitational waves, quantum technologies, and particle physics. Selected candidates will be invited to participate in the official selection process conducted by the University of Barcelona, which is required for formal admission and hiring.

ICCUB offers a dynamic, interdisciplinary research environment that fosters international collaboration and innovation, supported by cutting-edge infrastructure and a vibrant academic community. Located in Barcelona, a global hub for science and technology, the institute provides an ideal setting for early-stage researchers to launch their scientific careers while enjoying a rich and multicultural lifestyle.

The institute is actively involved in several major international collaborations, including LHCb, DESI, and Euclid, and plays a leading role in gravitational wave experiments such as the Virgo Collaboration, the Einstein Telescope Collaboration, and the LISA Consortium. ICCUB also contributes to large-scale astronomical surveys like ESA-Gaia, Weave, and SDSS-IV, as well as electromagnetic follow-up missions across various wavelengths, including BlackGEM, MAGIC, and LST.

Research project:

The successful applicants will conduct original research addressing one of the main challenges of the program:

• Physics Beyond the Two Standard Models: including the standard cosmological model (ΛCDM) and the standard model of particle physics.
• Gravitational Wave Physics: encompassing gravitational wave data analysis and novel developments for next-generation detectors.
• Quantum Resources for Science and Technology: with a focus on quantum light emitters and detectors for quantum technology applications.

The research will be carried out in collaboration between at least one the groups working on the aforementioned challenges and the ICCUB technological unit. It will integrate both scientific and experimental approaches, with particular emphasis on the development of new instrumentation, detector technologies, and data processing techniques.

They will be integrated in the relevant ICCUB research groups and the ICCUB technological unit,   and work closely with colleagues in the ICCUB. 

Opportunities at ICCUB:

The PhD fellows at ICCUB will benefit from a comprehensive and enriching training program designed to prepare them for successful careers in academia, industry, or scientific outreach. Each doctoral project is embedded within one of ICCUB’s strategic research challenges. Supervision is provided by experienced ICCUB researchers, often involving co-supervision to foster interdisciplinary perspectives and collaborative mentorship.

In addition to research, students will engage in a tailored training program that includes both technical and transferable skills: scientific seminars, ICCUB Colloquia, advanced instrumentation workshops, data science, research ethics, science communication, project management, and career development. ICCUB also encourages international mobility through short-term research stays at leading institutions worldwide, enhancing global scientific exchange and visibility.

Fellowship terms:

• The fellowship includes funds for a predoctoral training contract for up to four years. The annual salary will be split into 12 monthly payments and distributed as follows:
  • The first year of PhD: 18.269,56 €/year
  • The second and third year of PhD: 22.032,36 € /year 
  • The fourth year of PhD: 24.468,15€/year
  • Predoctoral contracts are renewed annually for up to 4 years. Renewal is subject to satisfactory performance in the PhD studies and related research activities. If the doctoral degree is obtained before the predoctoral fellowship ends, a Postdoctoral Orientation Period (POP) can be funded from the time the doctoral degree is obtained until the end of the predoctoral fellowship, with a maximum duration of 12 months (i.e. predoc contract + POP = max. 4 years in total).
  • The fellowship includes full social security coverage through the Spanish Social Security system, providing access to the Spanish public health care system and pension and unemployment benefits.
• Up to 7.000€ to cover the enrolment fees for the UB’s Physics doctoral program (for a maximum of 4 years) and carry out short stays in other institutions, companies or universities abroad. The research stays must have a minimum duration of one month and must be authorized by the doctoral supervisor/s.

• For full details, refer to the 2024 ‘Centros de Excelencia «Severo Ochoa» y Unidades «María de Maeztu»’ call for proposals, within the Plan Estatal de Investigación Científica y Técnica y de Innovación 2021–2023 (Articles 10, 11, and 29).

Eligibility criteria:

The fellowships are addressed to graduate students of any nationality who fulfil the following eligibility criteria:

• Applicants must hold a Bachelor’s and a Master’s Degree in Physics, Mathematics, Astronomy, Particle Physics, Cosmology, Electronics, Semiconductor Technology, Photonics, Quantum Technologies, Computer Science or a related discipline by September 2026
• Be eligible for full-time enrollment in the UB Physics doctoral program for the 2026-2027 academic year by the time the fellowship starts, between September 2026 and January 2027.
• Applicants must not hold a doctoral degree. Moreover, applicants are not eligible if they have benefited from a predoctoral training fellowship under the ‘Plan Estatal de Investigación, Desarrollo e Innovación Tecnológica’ or any of the previous Spanish National Plans by MICIU/AEI.
• Applicants must have a thesis supervisor affiliated with the Institute of Cosmos Sciences.

Preferred skills:

• A good understanding of at least one the following domains will be a plus:
  • Scientific instrumentation and detector technology
  • Electronics and microelectronics
  • Photonics
  • Quantum technologies
  • Computational science, statistics and data analysis.
• Good knowledge of the Python programming language; the knowledge of C/C++ will be considered an asset.
• Working knowledge of the Linux, Windows and Mac operating systems.
• The ability to collaborate and communicate well in English.
• Willingness to collaborate across traditionally-separated research perspectives and approaches.
• An interest in producing high quality high impact science and  writing high quality scientific papers.

Selection criteria:

A score of up to 100 points will be awarded, on the bases of the following criteria:

1. Candidate's academic and/or scientific-technical experience, up to 50 points
   1. Scientific and technical contributions, up to 45 points The academic record and other curricular merits of the candidate will be assessed, as well as their suitability for the tasks to be carried out based on training and professional experience.
   2. Mobility and internationalization, up to 5 points Short-term research stays in national and international institutions, universities, and industry will be assessed, considering the prestige of the entity hosting the stay and the activity carried out therein, as well as the impact of the research stays on the research career path of the candidate.
2. Suitability of the candidate for the research activities to be carried out in the funded project, up to 50 points

The candidate's suitability for the program, project, and planned research activities will be evaluated based on their prior training and experience. In this context, consideration will be given to the added value that undertaking the project would bring to their research career, as well as the value the candidate would contribute to the host institution and research groups.

If two or more applications receive the same final score, preference will be given to the candidate with the highest score for criterion 1. If the candidates remain tied, a draw will be made to select the winning candidate.

Application Process:

The entire application process will be completed online. To apply, please complete the application form and provide contact details for two referees. After submission, you will receive instructions on how to upload the following documents:

• Curriculum Vitae, we welcome to use of the AEI template but this is not mandatory, in Spanish or English, which must list the merits the candidate wishes to be considered. The curriculum vitae template can be found here.
• Official transcripts of BSc and MSc studies in PDF format, showing grades obtained. If the academic transcripts are not in Catalan, Spanish or English, applicants should also attach a translation in one of the above-mentioned languages, and the grading system should be explained.
• Motivation letter with statement of research expertise and interests  and justificationof  their fit to the  project (max 3 pages).
• The contact of two Reference Letter writers (referees will be contacted directly)

Reference letters must be sent directly by the referees through the on-line application system (the system will contact these scientists you named, asking them to submit their letters of reference after a few working days). Applications will only be considered once at least one reference letter has been received.

Please note:

• In case of multiple applications to this call, the applicant should clearly indicate in their statement all the applications submitted or planned and indicate their prioritization in the motivation letter.
• For any questions regarding the application process, please contact secretaria@icc.ub.edu.
• Candidates must ensure that all information is included before the deadline. Incomplete applications will not be considered.

Important: Candidates who are shortlisted through the ICCUB pre-selection process will be invited to apply to the University of Barcelona’s call.

Key dates:

Application deadline: Until filled. Review of the applications will start on December 1st, 2025

Final resolution: February 2026

Pre-selection process:

The evaluation and pre-selection of the candidates will be conducted by the ICCUB María de Maeztu Committee for Predoctoral Training, following the guidelines set by the 2024 ‘Centros de Excelencia «Severo Ochoa» y Unidades «María de Maeztu»’ call for proposals, following the procedure below:

• The selection will be based on the evaluation criteria described before.
• At the late stages of the pre-selection process, short-listed candidates will be contacted for a personal interview.
• All applicants will be informed of the final pre-selection decision by February 2026.

ICCUB follows in its selection processes a gender equality opportunity policy and a non-discrimination policy based on age, ethnic or social origin, religion or belief, sexual orientation, language and disability.

Funding:

These positions are financed by the State Agency for Research of the Spanish Ministry of Science, Innovation and Universities through the "Unit of Excellence María de Maeztu 04/2019-03/2031" awarded to the Institute of Cosmos Sciences, grant CEX2024-001451-M funded by MICIU/AEI/10.13039/501100011033.

The Unit of Excellence Maria de Maeztu recognition has been awarded by the Spanish Government in 2025 for the third time to the ICCUB, as a center with a highly competitive strategic research programmes in the frontiers of knowledge.

The Hubble constant, H₀, that measures the current expansion rate of the Universe is one of the key parameters of the cosmological model. It can be measured from the Cosmic Microwave Background or directly in the local Universe. While the two measurements should give the same value, as they measure the same universe, they do not agree in practice. This can be a sign that the cosmological model does not describe well-enough our universe, or that the measurements of H₀ somehow suffer from systematics. One fully independent way of measuring H₀ locally is to use the so-called time delays in strongly lensed quasars, in combination with detailed models of the potential well for the galaxy(ies) responsible for the lensing effect. The PhD is fully devoted to the measurement of H₀ with strong lenses and will involve lens modeling, dynamical modeling of lenses as well as processing of HST and JWST observations of such objects. This work, and therefore the student, is/will be part of the TDCOSMO collaboration.

The student will join the new research group of Prof. Frédéric Courbin, at ICCUB but will of course benefit from and contribute to the other groups in observational cosmology at ICCUB.

Description of the group:

F. Courbin works in close collaboration with the ICCUB Physical Cosmology group (Profs. Verde, Jimenez, Gil-Marin), studying connections between theory and observations in large sky surveys. F. Courbin is more oriented towards observations and modeling but also has a strong signal processing component in his research, as a full member of the ESA Euclid mission and as one of the leads of strong lensing in Euclid. He also collaborate with the cosmostat group in CEA-Saclay.

https://www.icrea.cat/community/icreas/30123/frederic-courbin/

Requirements:

Who can apply?

Applicants may be all those who are enrolled or admitted to a doctoral program at the University of Barcelona for the 2025/2026 academic year, at the time of the application submission. Applicants may also be all those people who, even though at the time of the application submission are not enrolled or admitted to a doctoral program, they will be on the date the contract is formalized.

Applications must be submitted online through this link. You can find here a step by step that will guide you through the application process.

Documents to be attached to the application:

a) For studies not completed at the UB, including qualifications obtained outside Spain: copy of the candidate's personal academic transcript for the completed university studies (bachelor's degree, pre-EHEA degree, master's degree) stating the grades obtained in the relevant exam sittings expressed as failed (S), passed (A), merit (N), excellent (E) or excellent with honor’s (MH), the corresponding numerical grades, the credits earned and the date the qualifications were awarded, as well as the corresponding certified translation, where applicable.

b) For studies completed outside Spain: statement of equivalence of the grade point average for bachelor's degree and master's degree studies, submitted using the template provided by the Spanish Ministry of Education, Vocational Training and Sport.

c) Curriculum vitae, using the AEI template, in Spanish or English, which must list the merits the candidate wishes to be considered. The curriculum vitae template.

d) Accreditation of degree of disability, if applicable.

Employment conditions:

·         Which is the salary?

The minimum salary compensation that researchers in training must receive will be around 17.700 euros gross per year for each of the first two years, 19.000 for the third year and 23.700 for the fourth year.

You will also get an additional funding of 7.000€ that you will be able to spend on tuition or research stays, for example.

·         What is the duration of the contract?

A maximum of four years.

More information here

Contract funded by PID2024-155455NB-I00, funded by MICIU/AEI /10.13039/501100011033

About the Institute of Cosmos Sciences:

The Institute of Cosmos Sciences (ICCUB) created in 2006 at the University of Barcelona is an interdisciplinary center dedicated to fundamental research in cosmology, astrophysics, particle physics, quantum physics, and nuclear physics. The ICCUB is involved in international collaborations in all these areas and aims to exploit the connections and synergies between them from theoretical, observational, and experimental perspectives. Additionally, the institute has a strong technology transfer and knowledge dissemination program linked to these research areas.

Embedded within the University of Barcelona, the ICCUB enhances and complements UB's mission in excellent and high-impact interdisciplinary research, talent attraction, training, technology transfer, and social impact, all with a global and international perspective. The institute has been awarded the Maria de Maeztu Excellence award three times.

The ICCUB provides a stimulating and inclusive intellectual environment, encouraging strategic participation in international collaborations and fostering synergies and partnerships among researchers and the local scientific and technological community. The research lines cover diverse topics such as cosmology and large-scale structure, high-energy experimental physics, galaxy structure and evolution, gravitational wave sources, theory, nuclear physics, and high-energy astrophysics, among others. The institute also houses an Advanced Technology Unit supporting experimental research requiring cutting-edge technology.

In addition to cutting-edge research, ICCUB's activities include graduate student training, technology and knowledge transfer to society, and a scientific outreach program. Detailed information about their activities can be found on their website, https://icc.ub.edu/. They also offer a wealth of material for learning about their science on Serviastro, their astrophysics outreach website at https://serviastro.ub.edu/es, and Serviparticulas, their particle and nuclear physics outreach website at https://serviparticules.ub.edu/en

The Stellar Physics group at the ICCUB welcomes expressions of interest from outstanding postdoctoral researchers to jointly apply for the 2025 Marie Skłodowska-Curie Postdoctoral Fellowship (MSCA-PF-2025) through the European Commission. The group offers expert mentoring and comprehensive guidance throughout the application process to help candidates develop competitive proposals.

The research developed at the Stellar Physics group covers different stages of star formation, stellar evolution all the way from dust to life, and the study of stellar environments and their planetary systems. We aim to develop a multi-scale, multi-disciplinary approach to answer these three main questions:

1 - How do stars form?

2 - How do stars evolve in isolation; in multiple systems and as a population?

3 - How does atmospheric activity (e.g., stellar winds, flares, coronal mass ejections), including the Sun, impact their environment and how does this affect the habitability of exoplanets?

To this end, the research activity of our group focuses on the following topics:

1. Star formation with a multiwavelength approach, covering from radio to high energy spectral range.
2. Evolution of stellar binary stars with time-domain astrophysical datasets (transients, variable and eclipsing systems, etc.), spectroscopic characterization, and stellar evolution models.
3. Analysis and modeling of solar particle events as well as the development of solar particle radiation interplanetary environment prediction models.
4. Understanding the impact of stellar activity (flares) over planetary atmospheres and habitability.
5. Stellar astrophysical parameter estimation and stellar characterization from astrometry, photometry, and spectroscopy.
6. Understanding different stellar populations within the Milky Way with large astrophysical datasets (Gaia, future GaiaNIR,  the spectroscopic WEAVE survey…).
7. New instrumentation for astrophysics for Montsec Observatory.

The members of the group have leading and collaboration roles in major collaborations in the field of stellar physics, such as Gaia Data Analysis and Processing Consortium, Euclid, BlackGEM time-domain survey, Transient and Variable Science collaboration within the Vera Rubin Observatory (LSST), SKA and “The VLA Orion A Large Survey” collaboration, Solar Orbiter and PLATO missions, and the UV-optical CubeSat mission PhotSat, entirely led by the Institute of Space Sciences of Catalonia (IEEC). In addition, the group has ongoing collaborations with European and international research institutions (Caltech, Radboud University, KU Leuven, Universidad Nacional de Mexico, among others), which can enhance the internationalization of our member’s research.

The group can offer support for computing time in the Institute of Cosmos Sciences cluster. The fellow will have the opportunity to develop a career development plan and be part of a mentorship program.

REQUIREMENTS:

We are excited to support candidates with expertise related to the main research areas carried in our group, both from observational and theoretical perspectives. In particular, we are interested in exploring projects that can exploit the synergies between the major research lines in stellar physics, and also with other research groups at the ICCUB, such as the high energies group, the gravitational waves group, the galaxy structure and evolution, and the technological unit.

Eligible Researchers

Researchers can be of any nationality and must:

• Be in possession of PhD at the call deadline.
• A maximum of 8 years full-time research experience after the date of award of the doctoral degree.
• Not have resided or carried out their main activity in the country of the recruiting beneficiary (Spain) for more than 12 months in the 36 months immediately before the call deadline.
• Researchers who are refugees in an EU MS or HEU AC according to the Geneva Convention may also apply to both Fellowships, irrespective of whether they are long-term residents or not.
• GPF researchers must be nationals or long-term residents of EU MS or HEU AC.

Applicants who apply and choose our institute as Host Institution for a MSCA Postdoctoral Fellowships (European or Global) proposal can benefit from dedicated support, which specifically consists of:

• Mentorship program
• On-demand support with dedicated staff

Financial Support

The salary conditions of a MSCA Postdoctoral Fellow are very competitive in relation to the average cost of living in Barcelona. It provides the following yearly funding:

• Monthly living allowance: 5.990€ per month (to be adjusted using the corresponding country coefficient).
• Mobility allowance: 710€ per month.
• Family allowance: 660€ per month.

How to Apply

To express your interest and submit your application, please send the following documents to jobs@icc.ub.edu:

• A cover letter outlining your research interests and motivation
• Your CV (including a list of publications)
• A brief research proposal (1–2 pages)
• Contact information for two referees

Please include “MSCA-PF-2025 Application – Stellar Physics Group” in the subject line of your email.

HOST INSTITUTION

The Institute of Cosmos Sciences of the University of Barcelona seeks applicants for a full-time research assistant with a 1-year contract with the intention to continue to a PhD. The research may cover axion dark matter models, gravitational microlensing and cosmological simulations of Local Group formation, depending on interests.

The appointed researcher will be ascribed to the Department of Quantum Physics and Astrophysics (FQA) and to the Institute of Cosmos Sciences (ICCUB), a María de Maeztu Unit of Excellence. Overall, the FQA and ICCUB host about 180 staff working in all aspects of cosmological sciences, leading to a vibrant fundamental research program in cosmology, astrophysics, nuclear and particle physics.

Employment conditions

The appointment is initially a full-time contract (20 hours per week) for 11 months. The expected start date is September 2025.

Gross annual salary will be 16.300€ per year, includes social security and public health care benefits, covering spouse and children.

Application procedure and deadline:

Please send an email to jobs@icc.ub.edu with your information and your application materials:

• Curriculum Vitae
• Cover letter including research experience and interests (2 pages max).

The application deadline is June 30th, 2025.

Inquiries about the application submission can be directed to jobs@icc.ub.edu. Inquiries about the position can be directed to Jordi Miralda (jmiralda@fqa.ub.edu).

Contact: jobs@icc.ub.edu

About the Institute of Cosmos Sciences:

The Institute of Cosmos Sciences is a research institute of the University of Barcelona. It is an interdisciplinary center dedicated to fundamental research in the fields of cosmology, astrophysics, and particle physics. In addition, the institute has a strong technology program through its participation in international collaborations in observational astronomy and experimental particle physics.

As part of the University of Barcelona, the ICCUB is a recipient of the European Commission’s HR Excellence in Research (HRS4R) Award, which recognises, among other achievements, respect for equal opportunities and the capacity to attract talent in a positive working environment that promotes the pursuit of successful research careers. The ICCUB respects the principles of open, transparent, merit-based selection. We strongly encourage women and underrepresented minorities to apply. For additional information please see the Diversity, equity and inclusion Commission.

The ICCUB is located in Barcelona, considered the 8th World's Best Cities 2022: one with near-perfect weather year-round, miles and miles of beaches, iconic parks, striking architecture and colorful neighborhoods that march to their own beat—artistic, sophisticated, bohemian. Moreover, it is a pole of attraction for the technology sector, a top choice to establish a company in this sector, and it hosts some of the world's major technological events, such as the Mobile World Congress and the Smart City Expo. In addition, Barcelona and its metropolitan area is a leading destination on the map of global technological ecosystems and has infrastructures such as science parks, universities and the 22@ district.

Contract financed by MCIN/AEI/10.13039/501100011033 and by FEDER, EU

The Institute of Cosmos Sciences at the University of Barcelona (ICCUB) invites applications for a full-time postdoctoral researcher position in Theoretical Particle Physics. This position is funded by the “La Caixa” Foundation through the Junior Leader Fellowship program (ID 100010434) and the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No. 847648, awarded to Dr. Bernat Capdevila. The fellowship reference code is LCF/BQ/PI24/12040024.

The successful candidate will join the project titled “Improving Precision in Flavour Physics with Simulation-Based Approaches”. The project’s primary research lines include:

1. Developing anomaly detection methods using Machine Learning and Simulation-Based Inference to address challenges in high-dimensional parameter spaces and infer unmeasured observables.
2. Improving computational methods for extracting the CKM matrix element Vub from inclusive decays with deep learning approaches.

The appointed researcher will be based at ICCUB, a María de Maeztu Unit of Excellence. The institute host about 180 staff working in all aspects of Theoretical Physics, leading to a vibrant fundamental research program in High Energy Physics, Nuclear Physics, Cosmology and Astrophysics.

The successful candidate will also have opportunities to collaborate with members of the Particle Physics Phenomenology group, which includes twelve faculty members (Jorge Casalderrey, Miguel Ángel Escobedo, Domènec Espriu, María Concepción González, Sergi González-Solís, Jaume Guasch, Jordi Salvadó, Joan Solà, Joan Soto, Josep Taron, Juan Torres, and Javier Virto). Research interests in the group span topics such as Standard Model and Beyond the Standard Model phenomenology, B-physics, lattice QCD, QCD phenomenology, Neutrino Physics, and Dark Matter. Close interactions are expected with Prof. Javier Virto’s group, which focuses on Flavour Physics, Effective Field Theories, and non-perturbative methods for evaluating hadronic effects.

Applicants must hold a PhD in Physics at the start of the contract and should demonstrate a strong research record in Theoretical Particle Physics, with a commitment to pursuing cutting-edge research in collaboration with the group.

The ideal candidate will have:

• A strong background in High-Energy Physics Phenomenology (experience in Flavour Physics is advantageous but not mandatory).
• Proficiency in computational methods, particularly programming. Experience in Python is highly desirable. Alternatively, expertise in other programming languages must be evidenced (Mathematica/Wolfram Language is not considered relevant).
• Solid knowledge of statistical methods and data analysis.
• Prior research experience with Machine Learning techniques, which will be considered a valuable asset, but not a requirement.

Employment conditions

The appointment is initially a full-time contract (37.5 hours per week) for one year, with anticipated renewal for one additional year, contingent upon the availability of funds and job performance. The expected start date is September 2026.

Gross annual salary will be 38500€ per year, includes social security and public health care benefits, covering spouse and children. We offer flexible working hours and family reconciliation.

Application procedure and deadline:

Please fill out this link with your information and the information of three referees who will provide recommendation letters for you. Once you submit this form you will find the instructions on how to upload your application materials:

• Curriculum Vitae
• Cover letter including research experience and interests (2 pages max)
• List of publications
• Three reference letters

The referees will receive an email with instructions on how to upload their letters after a few working days.

Please note that your application will not be complete until you and at least one referee has uploaded the corresponding documents.

The application deadline is January 12, 2025, and the review of applications will begin immediately thereafter. The position will remain open until filled.

Inquiries about the application submission can be directed to jobs@icc.ub.edu. Inquiries about the position can be directed to Dr. Bernat Capdevila (junior.leader.postdoc@gmail.com).

Selection process:

• Pre-selection
• Interview
• Offer letter