Since 2003: Professor (W3) for Mathematics, Universität Hamburg
2002–2003: Professor (C3) for Physics, RWTH Aachen
2000: Habilitation, Paris 6
1999–2002: Lecturer (tenured), LPTHE, Paris 6
1999–1999: Senior postdoc, ETH Zürich
1997–1998: Fellow, CERN, Geneva
1995–1996: Postdoc IHÉS, Bures-sur-Yvette
1995: Doctorate in Mathematics, University of Amsterdam, The Netherlands, supervisor: Robbert Dijkgraaf
1987–1992: Degree in Physics, Universität Heidelberg, Germany

Since 2020: Henriette-Herz scout for the Humboldt foundation
Since 2019: Member of the steering committee of the Cluster of Excellence Quantum Universe
Since 2017: Editor of Communications in Mathematical Physics
Spokesperson and deputy spokesperson of the RTG 1670 “Mathematics inspired by string theory and quantum field theory”
Member of the steering committee of the DFG-priority program “Representation theory”
Since 2009: Editor of Letters in Mathematical Physics
Since 2006: Editor of Journal of Mathematical Physics
Since 2005: Editor book series Algebra and applications (Springer)
2006–2021: Editor of Communications in Contemporary Mathematics