Research Assistant (m/f/x) in Observational Cosmology (NRW FAIR Network)

In order to fill a fixed-term position in full-time (39.83 hours/week = 100%) 01.09.2025 or later, we are looking for 1

Research Assistant (m/f/x) in Observational Cosmology (NRW FAIR Network)

Ruhr-Universität Bochum (RUB) is one of the leading research universities in Germany. As a reform-oriented campus university, it uniquely combines the entire range of major scientific disciplines in one place. The dynamic coexistence of subjects and subject cultures offers researchers and students alike special opportunities for interdisciplinary cooperation.
The Chair of "Observational Cosmology" of Prof. Hendrik Hildebrandt has a vacancy for a full-time research assistant (39.83 hours/week) within the "NRW FAIR" network from September 1, 2025 (later start possible). The position is initially limited until July 31, 2026, but an extension is foreseen.
Scope: full-time
Duration: fixed-term, 31.07.2026
Start: 01.09.2025 or later
Apply by: 2025-08-25
Your tasks:

• Application of AI methods/machine learning to analyze very large and/or high-dimensional data sets and simulations

• Active participation in the implementation of the Euclid and LSST projects

• Measurement and simulation of cosmic shear, galaxy-galaxy lensing and galaxy clustering with current imaging data sets

• Calibration of shear and redshift measurements

Your profile

• Completed doctorate in the field of astronomy/astrophysics
• Experience with AI methods or machine learning
• Experience with optical and infrared sky surveys in extragalactic astronomy
• In-depth knowledge of the weak gravitational lensing effect
• Image processing of astronomical data from optical and infrared telescopes
• Multicolor photometry
• Photometric redshifts
• Calibration of redshift distributions for cosmic shear measurements
• Calibration of shear measurements