Since 2009: Professor (W2) for Theoretical Physics, Universität Hamburg, Germany
2006–2009: Permanent Lecturer, IPPP, University of Durham, UK
2004–2006: Fellowship, CERN, Geneva, Switzerland
2003–2004: Postdoctoral Research Associate, IPPP, University of Durham, UK
2002: Postdoctoral Research Associate, DESY, Hamburg, Germany
2002: Scholarship, Graduiertenkolleg “Zukünftige Entwicklungen in der Teilchenphysik” Universität Hamburg, Germany
1999–2001: Postdoctoral Research Associate, DESY, Hamburg, Germany
1997–1999: Doctorate in Physics, Universität Würzburg, Germany, including stay for a DAAD fellowship, HEPHY Vienna and University of Vienna, Austria
1989–1997: Degree in Physics, Universität Würzburg, Germany

Since 2024: Member of the University Council of Universität Hamburg
Since 2023: Coordinator of ECFA Focus Group on ZH angular distributions
Since 2022: International Development Team WG2 responsible for the undulator-based positron source within the EU ITN
2022–2023: Scientific coordinator of the exhibition “Wie alles begann”, Cluster of Excellence “Quantum Universe”, Universität Hamburg / Museum der Arbeit, Hamburg, Germany
2020–2022 Member of the International Grants Panel, French National Research Agency (ANR)
2019–2022: Member of the Steering Committee (director of the Quantum Universe Research School) of the Cluster of Excellence “Quantum Universe”, Universität Hamburg, Germany
Since 2018: Responsible for the international Physics M.Sc. program, Universität Hamburg, Germany
2014–2020: Member, Science Advisory Board, Institute for High Energy Physics (HEPHY), Vienna, Austria
2014–2019: Coordinator, Integrated Research Training Group, DFG SFB 676 “Particles, Strings and the Early Universe”, Universität Hamburg