The Physics of Molecular and Biological Matter group at the University of Tübingen, led by Prof. Dr. Dr. h.c. Frank Schreiber, is seeking a motivated PhD student to join their internationally recognized research team. The group specializes in the study of molecular and biological matter using advanced X-ray and neutron scattering techniques, with research areas spanning materials for photovoltaics, protein dynamics in solutions and at interfaces, complex nano-structured materials, and the development of machine learning tools for efficient experimental data analysis. This PhD project focuses on understanding the structure and dynamics of protein molecules in concentrated solutions. The successful candidate will employ a range of experimental techniques, including Small-Angle X-ray Scattering (SAXS), X-ray Photon Correlation Spectroscopy (XPCS), Quasi-Elastic Neutron Scattering (QENS), and Dynamic Light Scattering (DLS), to investigate protein behavior. The role involves sample preparation, preliminary characterization using laboratory X-ray setups, participation in measurement campaigns at world-leading synchrotron and neutron facilities (such as PETRA III, EuXFEL in Hamburg, ESRF, and ILL in Grenoble), and analysis and presentation of scientific results at conferences and in publications. The position offers a highly collaborative and international environment within the Institute of Applied Physics, access to well-equipped laboratories, and opportunities to contribute to top scientific experiments and develop new data analysis tools. Candidates will also have the chance to pursue their own research ideas using unique experimental equipment and large-scale facilities. The University of Tübingen is renowned for its excellence in research and teaching, vibrant student life, and beautiful surroundings. Applicants should hold a Master’s degree in physics or chemistry (or equivalent), demonstrate interest in materials science, possess good written and spoken English, and be able to work both independently and as part of a team. Programming skills (especially Python) and laboratory experience are strong advantages. While knowledge of German is not required, it is considered a plus. The university encourages applications from women and individuals with disabilities, and is committed to equal opportunities and diversity. The position is funded at E13 TV-L, 65% for three years, with employment managed by the university’s central administration. Applications should include a cover letter, CV, and transcript of records, submitted as a single PDF to [email protected]. The application deadline is 28 February 2026. For further details on the group’s research activities and publications, visit the group website .