The Faculty of Physics has the following job opening: 
Research position (m/f/d) (PhD student) in the field of cosmology
ID: Wiss25512
- starting: as soon as possible
- Teilzeit 65 %
- salary depending on personal qualification up to Remuneration level 13 TV-L
- befristet
The Cosmology and Astroparticle Physics group investigates the formation and evolution of large-scale structures in the Universe, the nature of dark matter, dark energy and the physics of the early universe. We are part of the Collaborative Research Center CRC-TRR 211 "Strong-Interaction Matter under Extreme Conditions" and use theoretical, statistical and numerical tools in combination with observational data.
You will conduct research independently and in collaboration with small international teams and large collaborations and present your results in scientific publications and meetings (~92 %). The supervision of exercise groups (tutorials) and the support of Master and Bachelor students is also part of the tasks (1 LVS / ~8 %).
The employment is conducive to academic qualification, and opportunities for academic (further) qualification are provided.
Your Tasks
The PhD project is part of the CRC project “Strong interaction matter in the early Universe”. As a CRC member, you will work on the theoretical develop- ments to determine the QCD imprint on the primordial black hole production. You will work on new techniques to enable calculations beyond a constant collapse threshold, thereby accounting for the cosmic trajectory in the early universe and making predictions for merger rates that can be confronted with astrophysical observations.You will conduct research independently and in collaboration with small international teams and large collaborations and present your results in scientific publications and meetings (~92 %). The supervision of exercise groups (tutorials) and the support of Master and Bachelor students is also part of the tasks (1 LVS / ~8 %).
The employment is conducive to academic qualification, and opportunities for academic (further) qualification are provided.
Your Profile
We expect
- completed scientific university degree in physics, astronomy or equivalent, alternative: completed scientific university degree (e. g. Bachelor's degree) and advanced scientific university degree (e. g. Master's degree) in physics, astronomy or equivalent
- good command of written and spoken English
- ability to work in a team
- Self-motivation
- documented knowledge of cosmology
- experience in programming (Python, C++, etc.)
Preferred experience and skills
- experience with data analysis
- knowledge of particle physics and astrophysics
We offer
- salary depending on personal qualification up to Remuneration level 13 TV-L
- befristet (3 years) (§ 2 (1) sentence 1 of the WissZeitVG; in accordance with the provisions of the WissZeitVG and the Agreement on Satisfactory Conditions of Employment, the length of contract may differ in individual cases)
- Teilzeit 65 %
- internal and external training opportunities
- variety of health, consulting and prevention services
- reconcilability of family and work
- flexible working hours
- good transport connection
- supplementary company pension
- collegial working environment
- open and pleasant working atmosphere
- exciting, varied tasks
Application Procedure
We are looking forward to receiving your application with a 1-page cover letter, curriculum vitae, Abstract of the Master's thesis, transcript of academic achievements, certificates and two letters of recommendation. To apply, please preferably use our online form via the application button below.
application deadline: 08.01.2026
Contact
Prof. Dr. Cora Uhlemann
cuhlemann@physik.uni-bielefeld.de
Postal Address
Universität Bielefeld
Fakultät für Physik
Postfach 10 01 31
33501 Bielefeld
Prof. Dr. Cora Uhlemann
cuhlemann@physik.uni-bielefeld.de
Postal Address
Universität Bielefeld
Fakultät für Physik
Postfach 10 01 31
33501 Bielefeld
Bielefeld University has received a number of awards for its achievements as an equal-opportunity employer and has been
recognized as a family-friendly university. The university welcomes applications from women. This is particularly true with regard
both to academic and technical posts as well as positions in information technology as well as the skilled crafts and trades.
Applications are handled according to the provisions of the state statutes on equal opportunity. Applications from suitably qualified
handicapped and severely handicapped persons are explicitly encouraged.
At Bielefeld University on request positions can be carried out with reduced working hours as long as this does not conflict with official needs.
