Prof. Dr. Ulrich Rosar has held the chair of Sociology II at the Institute of Social Sciences since 2010. From 2015 until 2019 he has been Dean of the Faculty of Philosophy at HHU-Düsseldorf.

In research and teaching, he is primarily concerned with questions of political sociology, sociological inequality analysis and the methods of empirical social research.

Prof. Dr. Ulrich Rosar was re-elected as Deputy Spokesperson of the DIID by the DIID General Assembly in December 2023.