Faculty of Physics and Astronomy :
Observational Cosmology - German Centre for Cosmological Lensing
In order to fill a fixed-term position in full-time (39.83 hours/week = 100%) starting on 01.07.2026 (or later at the candidate's [m/f/x] request), we are looking for a
Postdoctoral researcher (m/f/x) - GCCL Fellowship Programme
The German Centre for Cosmological Lensing (GCCL; https://gccl-rub.github.io) welcomes applications for a three year postdoctoral fellowship hosted at the Ruhr University Bochum (RUB). In addition to the main centre at RUB, the GCCL includes nodes at Bielefeld, Bonn, Garching, Heidelberg, and Munich.
| Scope: | full-time |
| Duration: | fixed-term,
3 years |
| Start: | starting on 01.07.2026 (or later at the candidate's [m/f/x] request) |
| Apply by: |
2026-01-05 |
Your tasks:
- Weak gravitational lensing and/or clustering analysis of wide-field imaging surveys
- Exploration of new observables
- Simulation of certain aspects of these experiments
- Quantification and correction of systematic errors
- Presentation of results within collaborations and at international conferences
- Teaching
Your profile:
- We are seeking applicants with an PhD in astronomy/astrophysics and expertise in some of the varied and important skill sets required for the cosmological lensing analysis of Rubin/LSST and Euclid. These skills include:
- image processing,
- image simulation,
- photometry,
- shear and redshift estimation,
- mock catalogue production,
- statistical data analysis,
- cosmological parameter inference and
- theoretical modelling of weak lensing observables.
- Letters of recommendation from two referees should be sent to secretary@astro.rub.de before the closing date.
- Candidates should submit a CV and research proposal of up to two pages each via RUB’s BITE application system before Jan 5th 2026.
We offer:
The GCCL is committed to advancing equality and diversity, welcoming applications from everyone irrespective of gender, ethnic group or nationality. We aim to ensure that our culture and systems support flexible and family-friendly working. Most importantly we believe that having fun should be a key aspect of our work. This fellowship will nominally start in autumn 2026 with earlier/later start dates possible and welcomed.
Further information:
The position is salaried and based on the collective agreement of the Länder (TV-L). If the personal and collective agreement requirements are met, the employee will receive pay grade E13 TV-L.
Further information can be found at https://oeffentlicher-dienst.info/ (in German).
The place of work is Ruhr University Bochum.The load of teaching will be calculated according to § 3 of Lehrverpflichtungsverordnung (state of North Rhine-Westphalia).
The first round of video-interviews will be scheduled in the second half of January 2026.
RUB sees itself as a university with an international presence. The campus languages are German and English. Competence in at least one of the two languages and the willingness to learn the other are a prerequisite. RUB provides corresponding free courses for employees.
German language courses are offered by the University Language Center (ZFA) in the field of German as a Foreign Language (DaF).
https://www.daf.ruhr-uni-bochum.de/sbgk/index.html.en
The Staff Council has the right to participate in all selection interviews. At the request of a candidate (m/f/x), it will ensure its participation in the entire procedure. Please contact wpr@rub.de.
The Ruhr-Universität Bochum is one of Germany’s leading research universities, addressing the whole range of academic disciplines. A highly dynamic setting enables researchers and students to work across the traditional boundaries of academic subjects and faculties. To create knowledge networks within and beyond the university is Ruhr-Universität Bochum’s declared aim.
The Ruhr-Universität Bochum stands for diversity and equal opportunities. For this reason, we favour a working environment composed of heterogeneous teams, and seek to promote the careers of individuals who are underrepresented in our respective professional areas. The Ruhr-Universität Bochum expressly requests job applications from women. In areas in which they are underrepresented they will be given preference in the case of equivalent qualifications with male candidates. Applications from individuals with disabilities are most welcome.
Contact persons for further information:
Hendrik Hildebrandt
, Tel.: +49 234 32 24019
Catherine Heymans
heymans@astro.rub.de
Travel costs, accommodation costs and loss of earnings or other application costs for job interviews can unfortunately not be reimbursed.
We look forward to receiving your application via our online application portal by 2026-01-05. Please make sure to mention the reference number ANR 5200.
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