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PhD Position in Gravitational Waves at Nikhef

Nikhef s expanding the team working on the Einstein Telescope and the Virgo detector, and invite applications for one PhD position and one postdoc position in the framework of optical sensing and modeling.

The PhD position will focus on the development and application of the modelling framework Finesse (https://finesse.ifosim.org/). Finesse is an open source code for modelling laser interferometers for precision experiments and we deliver the software to the large scientific projects Virgo, LIGO and the Einstein Telescope (ET). To keep up with the more advanced instrumentation in ET we are extending and enhancing Finesse. You will make significant contribution to the Python code and you will work as a member of the international design team that defines the shape and performance of the most advanced observatory for gravitational waves. Application deadline: September 15th, 2025.

The group:
The Gravitational Wave group consists of about 20 staff scientists, 20 postdoctoral researchers, and 30 PhD candidates. The group is engaged in gravitational-wave observational science through active participation in the VIRGO and LIGO interferometer collaborations, and in instrumentation R&D with a particular emphasis on components for the VIRGO detector, such as advanced seismic isolation and suspension systems, advanced optical sensors (phase cameras and quadrant photodiodes). The group is leading the development of Finesse, a tool widely used to design and model gravitational wave detectors. In this context it is deeply engaged in the efforts of implementing a complete model of the Virgo interferometer and of designing the future Einstein Telescope.

Nikhef has established ETpathfinder, a dedicated R&D infrastructure located in Maastricht, aimed at developing and testing key technologies to enable the low-frequency sensitivity of third-generation detectors like the Einstein Telescope (ET).

The group also plays a central role in the preparatory efforts for the Einstein Telescope. The Netherlands, in collaboration with Belgium and Germany, is coordinating a transnational initiative to propose the EMR (Euregio Meuse-Rhine) region as a candidate site for the ET.

Offer

The successful candidate will be employed by the NWO-I foundation for a period of 4 years. The candidate will be embedded in the Nikhef Gravitational Wave group and stationed in Amsterdam, collaborating closely with colleagues in Maastricht. The salary is competitive, and the conditions of employment (https://www.nwo-i.nl/en/employees/) are excellent.

Requirements:

  • A Master’s degree in physics, optics, computer science, or a closely related field.
  • An interest in computational modeling.
  • Good knowledge of the Python programming language, the knowledge of C or Cython will be considered an asset.
  • Working knowledge of the Linux, Windows (and Mac) operating system.
  • The ability to collaborate and communicate well in English.

Application and Further information:
Qualified applicants are encouraged to apply by filling the application form below. Please be prepared to upload a curriculum vitae and a motivation letter, and have the email addresses of at least one referent ready, who is willing to send a letter of recommendation on your behalf. The deadline for the application is September 15th, 2025. Anyway, the positions will be filled as soon as possible. For further information fell free to contact either Andreas Freise (a.freise(at)nikhef.nl) or Anna Green (agreen(at)nikhef.nl).

Please find here full details.

Maria de Maeztu Postdoctoral position in Gravitational Waves Astronomy at the ICCUB

The Institute of Cosmos Sciences of the University of Barcelona (ICCUB) invites applications for a 3-year Postdoctoral position in gravitational wave astronomy, 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. Application deadline: November 30th, 2025.

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.
  1. 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.

Maria de Maeztu-ICCUB Postdoctoral positions and Fellowship

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 astronomy
Position in Quantum Resources for Science and Technology

Application deadline: November 30th, 2025

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(at)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(at)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.

Global Talent Ireland Call

Global Talent Ireland aims to attract exceptional mid-career and established researchers from across the globe to Ireland. Researchers funded through this programme are required to transfer their research activities from their current location to an Eligible Research Body in Ireland. Given its commitment to equality, diversity and inclusion, Research Ireland welcomes applications from women and those from historically underserved communities.  
  • Deadline for Expression of Interest: 28th August 2025
  • Deadline for full-proposal: October 2025
  • Duration: 6 years
  • Amount: €2.25M to 3.25M (direct costs)

The programme budget includes the resources to build a research team (e.g., staff, consumables and travel) to carry out high-impact, world-class research, and additional start-up costs to support the researcher’s move to Ireland.

The programme comprises two streams: Rising Stars and Research Leaders. High level details are outlined in the table below:

Career stage

Award duration

Research funding

Startup funding

Maximum budget request

Rising Star

5-15 years post-PhD

6 years

€1.5M

€0.75M

€2.25M

Research leader

16+ years post-PhD

6 years

€2.5M

€0.75M

€3.25M

Please find here full details.

Research Associate Searching for high-frequency gravitational waves at University of Hamburg

Institution: Faculty of Mathematics, Informatics and Natural Sciences, Department of Physics, Institute for Experimental Physics
Salary level: EGR. 13 TV-L
Start date: 01.11.2025, fixed for a period of three years. (This is a fixed-term contract in accordance with Section 2 of the academic fixed-term labor contract act [Wissenschaftszeitvertragsgesetz, WissZeitVG]).
Application deadline: 18.08.2025
Scope of work: part-time
Weekly hours: 66,67 % of standard work hours per week

Your responsibilities

Research associates will be expected primarily to teach and conduct research. The research associate will also have the opportunity to pursue further academic qualifications, in particular a doctoral dissertation. At least one-third of set working hours will be made available for the research associate’s own academic work.

The successful candidate will be strongly engaged in the experimental work in our Astroparticle Physics group which is part of the Cluster of Excellence “Quantum Universe”. A new experiment to search for MHz gravitational waves is currently in the prototype stage. You will be driving the design and optimization of the RF detector that will be operated inside a 14 T solenoid to search for both transient and stochastic gravitational waves. Your main contributions will be the installation and commissioning of the first detector design, reduction of noise contributions and running a matched-template search on real-time data for a first-science data run. You are also expected to contribute to the development of the next iteration of the experimental setup, optimizing both the design and the operation of a follow-up experiment. The research associate is expected to contribute to teaching at the level of 2.5 hours per week.

Your profile

A university degree in a relevant field.

You need to have experience in experimental work with an emphasis on RF methods, in the ideal case in the field of Astroparticle Physics. Experience in hardware-oriented programming (e.g., microcontroller, FPGA) with relations to controlling and monitoring a lab setup are very useful. A track record in high frequency gravitational wave phenomenology is very welcome.

We offer

  • Reliable remuneration based on wage agreements
  • Continuing education opportunities
  • University pensions
  • Attractive location
  • Flexible working hours
  • Work-life balance opportunities
  • Health management, EGYM Wellpass
  • Educational leave
  • 30 days of vacation per annum

Universität Hamburg—University of Excellence is one of the strongest research educational institutions in Germany. Our work in research, teaching, educational and knowledge exchange activities is fostering the next generation of responsible global citizens ready to tackle the global challenges facing us. Our guiding principle “Innovating and Cooperating for a Sustainable Future in a digital age” drives collaboration with academic and nonacademic partner institutions in the Hamburg Metropolitan Region and around the world. We would like to invite you to be part of our community to work with us in creating sustainable and digital change for a dynamic and pluralist society.

The University of Hamburg is committed to equity. Diversity enriches our university life, whether in our studies, research, teaching, education, or workplace. We therefore welcome all applications, regardless of gender, gender identity, sexual orientation, ethnic or social background, age, religion or belief, disability, or chronic illness.

The University of Hamburg strives to increase the number of women in academia, and encourages qualified female academics to apply.

Severely disabled and disabled applicants with the same status will receive preference over equally qualified non-disabled applicants.

Please find here full details.

Junior Research Fellow position on Gravitational Wave Astronomy and Astrophysics in Mumbai

Applications are invited from highly motivated candidates with interests in basic science and astrophysics for a Junior Research Fellow (JRF) position for two years with a possibility of extension by one more year with a starting date from September 15th, 2025 or later to work on a project with the title “A Data-Driven Reconstruction of the Hierarchy of Black Hole Formation and Evolution over Cosmic Time Using Gravitational Waves” in the research group of Dr. Suvodip Mukherjee, Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research, Mumbai, funded by the Anusandhan National Research Foundation, Government of India. Application deadline: August 20th, 2025.

The candidate must possess Master’s degree (Post Graduate Degree in Basic Sciences) or Graduate/Post Graduate degree in Professional Course, and should qualify for at least one National level Eligibility Test such as CSIR-UGC NET including lectureship, GATE, National Level Examination conducted by Central Government Dept. and their Agencies, and institutions such as DST, DBT, DAE, DOS, DRDO, MHRD, ICAR, ICMR, IIT, IISc., IISER, TIFR, etc. The candidate needs to have proficiency in both analytical and numerical calculations and sound knowledge in coding using Python and C/C++/Fortran. The position comes with a salary as per the JFR scheme of the Government of India, with a Housing Rental Allowance, and the possibility to join and work in the national and international collaborations as per the requirements for this project.

Interested candidates can apply for the position by submitting a single zip file including the latest CV, a report of the MSc. thesis (if applicable), BSc onwards degree certificates and mark sheets, qualifying examination certificate, names of at least two referees, and a cover letter before August 20th, 2025 to the contact person over email with the subject line
“Application for Junior Research Fellowship position under ANRF”.

Contact: Mukherjee, Suvodip (suvodip(at)tifr.res.in)
https://web.tifr.res.in/~suvodip.mukherjee/

Please find here full details.

Junior Leader postdoctoral Fellowships, incoming and retaining at ICCUB

“La Caixa” Foundation is launching a postdoctoral fellowships program in which candidates will be able to conduct a research project at accredited centres with the Severo Ochoa or María de Maeztu excellence award, Institutos de Investigación Sanitaria Carlos IIII and units evaluated as excellent by the Fundação para a Ciência e Tecnologia of Portugal.

Description of our Institute:

The Institute of Cosmos Sciences of the University of Barcelona (ICCUB) is an interdisciplinary center devoted 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. Moreover, the institute is an interdisciplinary centre with more than 70 long-term scientists, 20 engineers and 80 postdoctoral researchers (55% international) and PhD students (30% international) offering an international and multicultural environment.

The ICCUB has been awarded the Maria de Maeztu distinction which recognizes our leadership and research impact. Our main lines of research, as well as the associated faculty members, can be found here.

The ICCUB is concerned about the under representation of women, as well as other underrepresented minorities in the fields of sciences of the cosmos, and therefore strongly encourages their application.

The ICCUB is located in Barcelona, considered the 6th World’s Best Cities: one with near-perfect weather year-round, miles and miles of beaches, iconic parks, striking architecture and colourful neighbourhoods 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.

Junior Leader Fellowships Programme Description:

The Postdoctoral Junior Leader fellowships programme is aimed at hiring excellent researchers, of any nationality, who wish to continue their research career in Spain or Portugal in the STEM area (Science, Technology, Engineering and Mathematics). The objectives of this programme are to foster high-quality, innovative research in Spain and Portugal and to support the best scientific talent by providing them with an attractive, competitive environment in which to conduct excellent research.

The Postdoctoral Junior Leader fellowships programme is divided into two different frames.

Incoming programme:

  • Postdoctorate Junior Leader – Incoming: 20 postdoctoral fellowships for researchers of all nationalities. They will be offered a three-year employment contract to conduct a research project at accredited centres with the Severo Ochoa or María de Maeztu excellence award, Institutos de Investigación Sanitaria Carlos IIII and units evaluated as excellent by the Fundação para a Ciência e Tecnologia of Portugal.
  • 3 years maximum duration
  • Maximum amount: €320,100.
  • Programme of training in multidisciplinary skills

Requirements:

Researchers of any nationality are eligible for the Postdoctoral Junior Leader fellowships programme. In order to get accepted, candidates must meet the following requirements:

  • Experience: They should have earned their doctoral degree two to seven years prior to the deadline of the call for applications. The date of the doctoral thesis defence will be understood as the date when the doctoral degree is defended. In the cases of interruption of the research activity between the date of obtaining the doctoral degree and the call deadline, the candidate may request an extension of the period in which the doctoral degree must have been obtained.
  • Geographic mobility:
  • For candidates applying to Spanish centres or units: Candidates must not have resided or have carried out their main activity (work, studies, etc.) in Spain for more than twelve months in the three years immediately preceding the closing date of the call. Short stays, such as holidays, will not be taken into account.

Special mobility condition could apply for the in the cases of interruption of the research activity or researchers who have spent time in the procedure for obtaining the refugee status under the Geneva Convention.

  • Complete applications: Only candidates whose applications meet all the requirements of the call may be accepted.

Application: ”la Caixa” fellowship application website

FAQ

Retaining programme:

  • Postdoctorate Junior Leader – Retaining: 20 fellowships to carry out a postdoctoral research project at any university or research centre in Spain or Portugal.
  • 3 years maximum duration
  • Maximum amount: €320,100.
  • Programme of training in multidisciplinary skills

Requirements:

Researchers of any nationality are eligible for the Retaining modality of the Postdoctoral Junior Leader fellowships. To be eligible for admission, candidates must meet the following requirements:

  • Experience: Experience: have been awarded a PhD between two and seven years prior to the closing date of the call. The date of obtaining the PhD will be understood as the date the doctoral thesis is defended. Special deadlines apply for candidates with interrupted research careers.
  • Candidates must have carried out research stays at a centre or university outside Spain (or outside Portugal for those joining a Portuguese centre), during their doctoral or postdoctoral studies, for a total of at least 6 months before the closing date of the call.
  • Geographic mobility:For candidates interested in Spanish centres or universities: candidates must have resided or carried out their main activity (work, studies, etc.) in Spain for more than 12 months in the three years immediately preceding the closing date of the call.

Special deadlines will apply for candidates with interrupted research careers and for those who’ve gone through the process to obtain refugee status under the Geneva Convention.

  • Complete applications: Only candidates whose applications meet all the requirements of the call may be accepted.

Contact:

  • Fundación LaCaixa (fellowships(at)contact.fundaciolacaixa.org)

Please find here details.

Two postdoc positions in the Nikhef Gravitational Wave Group

Nikhef is the national institute for subatomic physics in the Netherlands. At Nikhef, approximately 250 physicists and 80 technical staff work together in an open and international scientific environment. Together they perform theoretical and experimental research in the fields of particle and astroparticle physics. Nikhef is a partnership between six major Dutch universities and NWO-I Foundation, the Institutes Organization of the Dutch Research Council (NWO).

Nikhef participates in a wide range of research collaborations, including the ALICE, ATLAS and LHCb experiments at CERN, the KM3NeT neutrino telescope in the Mediterranean, the Virgo gravitational waves interferometer in Pisa, the Xenon-nT dark matter experiment in Gran Sasso, the Pierre Auger cosmic ray observatory in Argentina, and the eEDM research programme in Groningen. Nikhef furthermore has scientific groups on theoretical particle physics, physics data processing, and detector R&D, and has excellently equipped technical departments in mechanics, electronics, and computing. Nikhef is preparing to take a leading position in the future Einstein Telescope.

The group and the Einstein Telescope

The Gravitational Wave group consists of about 20 staff scientists, 20 postdoctoral researchers, and 30 PhD candidates. The group is engaged in gravitational-wave observational science through active participation in the LIGO and VIRGO interferometer collaborations, and in instrumentation R&D with a particular emphasis on components for the VIRGO detector, such as advanced seismic isolation and suspension systems.

Nikhef has established ETpathfinder, a dedicated R&D infrastructure located in Maastricht, aimed at developing and testing key technologies to enable the low-frequency sensitivity of third-generation detectors like the Einstein Telescope (ET).

The group also plays a central role in the preparatory efforts for the Einstein Telescope. The Netherlands, in collaboration with Belgium and Germany, is coordinating a transnational initiative to propose the EMR (Euregio Meuse-Rhine) region as a candidate site for the ET. Over the coming years, detailed site characterization and environmental studies will be conducted to assess the EMR’s viability, which will be a decisive factor in the final site selection process for the observatory.

The positions

The postdoctoral researchers will focus on advancing the detailed understanding of site-specific noise sources in the geology of the EMR region, and their impact on the Einstein Telescope. This includes the characterization of seismic activity, electromagnetic disturbances, and the modeling and prediction of Newtonian Noise that impacts the detector’s low-frequency performance. A key aspect of the research will be the development of noise mitigation tools.

The successful candidates will have a strong background in mathematical and computational methods, with demonstrated experience in the data analysis of complex physical systems. You will collaborate with a team of experts at Nikhef, as the position is embedded within the Gravitational Wave Group. This team provides a collaborative and multidisciplinary research environment covering all aspects of gravitational wave research. The deadline for applications is September 5, 2025.

Offer

The candidates will be employed by the NWO-I foundation for a period of 2 years. You will be embedded in the Nikhef Gravitational Wave group and stationed either in Amsterdam or Maastricht. The salary is competitive, and the conditions of employment (https://www.nwo-i.nl/en/employees/) are excellent.

Requirements
A background in computational methods is required. Applicants should have a PhD in physics or mathematics (or a closely related topic) by the time they start their appointment at Nikhef.

Further information and application
Qualified applicants are encouraged to apply by clicking the ‘apply now’ button below. Please be prepared to upload a curriculum vitae and a motivation letter, and have the email addresses of at least two referents ready, who are willing to send a letter of recommendation on your behalf. The deadline for applications is September 5, 2025. For further information, feel free to contact Stefan Hild.

Nikhef is committed to being an inclusive and diverse organisation. Applications from women and people belonging to minority and underrepresented groups are especially welcomed.

Contact: Stefan Hild (Stefan.hild(at)maastrichtuniversity.nl)

Please find here full details.

Junior Research Fellow position on Gravitational Wave Astronomy and Astrophysics in Mumbai

Applications are invited from highly motivated candidates with interests in basic science and astrophysics for a Junior Research Fellow (JRF) position for two years with a possibility of extension by one more year with a starting date from September 15th, 2025 or later to work on a project with the title “A Data-Driven Reconstruction of the Hierarchy of Black Hole Formation and Evolution over Cosmic Time Using Gravitational Waves” in the research group of Dr. Suvodip Mukherjee, Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research, Mumbai, funded by the Anusandhan National Research Foundation, Government of India. Deadline on August 20th, 2025.

The candidate must possess Master’s degree (Post Graduate Degree in Basic Sciences) or Graduate/Post Graduate degree in Professional Course, and should qualify for at least one National level Eligibility Test such as CSIR-UGC NET including lectureship, GATE, National Level Examination conducted by Central Government Dept. and their Agencies, and institutions such as DST, DBT, DAE, DOS, DRDO, MHRD, ICAR, ICMR, IIT, IISc., IISER, TIFR, etc. The candidate needs to have proficiency in both analytical and numerical calculations and sound knowledge in coding using Python and C/C++/Fortran. The position comes with a salary as per the JFR scheme of the Government of India, with a Housing Rental Allowance, and the possibility to join and work in the national and international collaborations as per the requirements for this project.

Interested candidates can apply for the position by submitting a single zip file including the latest CV, a report of the MSc. thesis (if applicable), BSc onwards degree certificates and mark sheets, qualifying examination certificate, names of at least two referees, and a cover letter before August 20th, 2025 to the contact person over email with the subject line
“Application for Junior Research Fellowship position under ANRF”.

Contact: Mukherjee, Suvodip (suvodip(at)tifr.res.in)

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Call for Expression of Interest (2026): Tenure-Track Positions in the Department of Physics Instituto Superior Técnico – University of Lisbon

The Department of Physics at Instituto Superior Técnico (IST) invites Expressions of Interest (EOI) from researchers across all branches of physics (theoretical and experimental) who aspire to build international research careers and establish dynamic research groups. As a leading institution in Portugal and Europe, IST provides an exceptional research environment with outstanding students, making it an ideal setting for cutting-edge research.
This initiative seeks to identify areas of research with high growth potential for the Department of Physics. In 2026, based on the results, we will launch international calls (Public Notice) to recruit tenure-track professors, primarily at the Assistant Professor level.

In this call, the Department of Physics is preferentially interested in applications for three Assistant Professor positions in the following scientific areas: ‘Astrophysics and Gravitation’, ‘Particle Physics and Nuclear Physics’, and ‘Condensed Matter and Nanotechnology’. The Department plans to open one Assistant Professor position in each of these areas.

We encourage applications from researchers with outstanding CVs, demonstrated scientific leadership, and a strong publication record. We are particularly interested in candidates with a proven ability to secure grants, especially from international funding organisations. Learn more about the Department of Physics and its scientific areas on https://fisica.tecnico.ulisboa.pt/.

Contact Instructions:

To apply, please send a single PDF document to eoi@fisica.tecnico.ulisboa.pt with the subject line “EOI: [Your Name]”.The document should include the following items and must be addressed to Prof. Ilídio Lopes, President of the Department of Physics:

  1. Motivation letter (one page): Clearly stating your preferred scientific area.
  2. Curriculum vitae: Including a complete list of publications.
  3. Achievements and publications (maximum two pages): Describe your three most significant achievements and up to five relevant publications from the past five years, detailing your specific contributions.
  4. Research and teaching statement (maximum two pages): A concise overview of your future research plans and teaching interests.
  5. References: Provide contact information (including email addresses) for two researchers or professors who will provide reference letters.

Reference letters should be sent directly by your referees to eoi@fisica.tecnico.ulisboa.pt with the subject line “RL: [Your Name]”. These letters should attest to your scientific, pedagogical, professional, and ethical qualities. Please ensure they are submitted before the deadline. Additional information may be requested.

Deadline: Applications must be received by 5th September 2025 to ensure full consideration.

IST Councils Deadline: The IST councils will identify research areas of interest by the end of 2025, with international calls for Tenure-Track Assistant Professor positions expected to open by Public Notice around the beginning of Spring 2026.

Disclaimer: This announcement does not guarantee the opening of calls for tenure-track or permanent positions.

Requirements, Benefits, and Distinctive Environment

Expectations for Assistant Professors:

The Assistant Professors will be expected to:

Building a robust and autonomous research career with global recognition.
Establishing a research program that attracts competitive funding at both international and national levels.
Overseeing the supervision of PhD students, MSc students, and undergraduates.
Contributing to undergraduate (BSc) and graduate (MSc and PhD) teaching programs.

Engaging in faculty duties, fostering collegiality, and upholding ethical standards.

Requirements and desired skills:

Prospective researchers must have obtained a doctoral degree in Physics or a related field by the date of the upcoming opening. Preference will be given to researchers with a strong research track record and university-level teaching experience. The ability to foster an inspiring work environment and establish international scientific collaborations within and outside the university is highly valued. Additionally, researchers should demonstrate a strong motivation to implement their vision and establish an externally funded research program. Proficiency in English (there is no requirement to speak Portuguese) and strong communication skills are also essential qualifications.

Tenure track at IST-ULisboa:

This open search is for prospective researchers interested in applying for upcoming openings of tenure-track positions with an initial 5-year appointment. After this period of 5 years, and upon a successful evaluation, the temporary employment will be converted into a permanent position. During the probationary 5-year period the juniorfaculty member will undergo a Mentoring Program that promotes their integration and adaptation to the IST culture. The objective of the program is to accelerate the development of an academic career with international impact, exhibiting scientific and academic leadership. The Program also supports junior faculty members through a financial start-up package, an incentive to partial sabbatical leaves abroad during the tenure track period, as well as access to an internal ERC Acceleration Program.

Salary and benefits:

IST-ULisboa is a public institution that offers competitive salaries and benefits in accordance with national laws and regulations. These include the possibility to subscribe to the healthcare plan for civil servants, benefiting from a wide choice of private and public national health services at reduced prices, the use of maternity license and paternity leavein case of childbirth, and other social benefits. IST faculty members may receive a supplement to their salary in retribution for participating in R&D projects.

IST is an inclusive and equal opportunity employer that highly values diversity and is committed to supporting and encouraging applications from women and underrepresented minorities.

About IST (ULisboa)

As Portugal’s top Engineering, Science, and Technology school and one of Europe’s premier institutions, IST offers an inspiring world-class learning environment and drives impactful research worldwide. It’s remarkable achievements, distinct institutional profile, strategic Lisbon location, and exceptional students, alumni, faculty, and staff underscore its global appeal. IST fosters a unique and multidisciplinary scientific atmosphere, bridging competencies across diverse engineering and fundamental science disciplines. This compelling environment attracts the finest Portuguese graduates and undergraduates aspiring to achieve impactful international careers in Science, Engineering, and Technology.

Notably, IST proudly hosts Portugal’s leading scientific community in theoretical and experimental physics and related fields, actively engaging in major international organizations like ESA, ESO, ITER, and CERN. With 8 Research Institutes and 25 Research Centres, IST stands as a pioneering hub of knowledge and innovation.

The Department of Physics of IST has the nation’s most prolific researchers in Physics. Their outstanding expertise draws students with top academic achievements from all regions of the country, fostering a vibrant academic community committed to pushing the boundaries of physics and related fields.

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