Beschreibung
**In order to fill a fixed-term position in part-time (29.8725 hours/week = 75%) starting on 01.05.2026 (or later at the candidate's [m/f/x] request), we are looking for a**
### PhD student (m/f/x) in Observational Cosmology
The observational cosmology group at the Ruhr-Universität Bochum (RUB), led by Prof. Hendrik Hildebrandt, is looking for a PhD student (m/f/x) with the earliest starting date of 1st May, 2026. The position is open to candidates from any country. The group provides a stimulating and international environment, with members from many different countries. The group is involved in the data analysis of several wide-field imaging surveys in the optical and infrared, most importantly KiDS, Euclid, UNIONS, and LSST@Rubin. The successful candidate (m/f/x) will work on the technical and theoretical development, simulation, and scientific analysis for one of the above mentioned projects.
Scope: part-time
Duration: fixed-term, 3 years
Start: starting on 01.05.2026 (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 collaboration and at international conferences
● Teaching assistant for exercises / lab-courses.
**Your profile:**
● Master’s degree in astronomy or astrophysics (by the time the position starts)
● Good understanding of cosmology theory and observations
● Proficient knowledge of English
● Extensive coding experience (preferentially in python)
● Excellent communication and presentation skills
[https://jobs.ruhr-uni-bochum.de/jobposting/5e1e3dc47aec7e1b32a191f6489295c819360d840?ref=AfA](https://jobs.ruhr-uni-bochum.de/jobposting/5e1e3dc47aec7e1b32a191f6489295c819360d840?ref=AfA)