| Since 01.2010 | Speaker of the Collaborative Research Centre (CRC) 884 "The Political Economy of Reforms". |
| Since 08.2007 | Chair of Political Science II at the University of Mannheim. |
| 09.2007 – 09.2010 | Head of Department B ("European Political Systems and their Integration") at the Mannheim Centre for European Social Research. |
| 10.2003 – 07.2007 | Chair of Political Science at the German University of Administrative Sciences Speyer. |
| 08.2002 – 05.2003 | Fulbright Professor for German Studies at the Washington University in St. Louis, USA. |
| 10.1999 – 09.2003 | Professor of Political Science at the University of Konstanz. |
| 04.1997 – 09.1999 | DFG‐Heisenberg‐Fellow at the Stanford University, USA (Professor Bruce Bueno de Mesquita, Ph.D.). |
| 10.1997 – 03.1999 | Interim Professor of Political Science at the University of Saarland (formerly Professor Dr. Jürgen Domes). |
| 03.1996 – 02.1997 | Associate Professor at the Interuniversity Center for Social Science Theory and Methodology (ICS) at the University of Groningen, NL (Professor Dr. Frans Stokman). |
| 05.1992 – 09.1997 | Assistant Professor at the Department of Social Sciences at the University of Mannheim. |
| 05.1990 – 04.1992 | Research Assistant at the Chair of Political Science I at the University of Mannheim (Professor Dr. Franz Urban Pappi). |
| 03.1988 – 04.1990 | Research Assistant at the Institute for Sociology at the University of Kiel (Professor Dr. Franz Urban Pappi). |
| 07.1987 – 02.1988 | Research Assistant at the Research Unit for Societal Development (FGE) at the University of Mannheim (Professor Dr. Rudolf Wildenmann). |