since September 2013 Professor, University of Kaiserslautern German and Comparative Politics, Department of Social Sciences
Summer 2009 Deputy Professorship, University of Göttingen Comparative Politics and Political Economy, Department of Prof. Dr. Andreas Busch
since October 2008 Senior Assistant Professor, University of Bonn Institute for Political Science and Sociology
2008 Habilitation Thesis: "Die Selbstautorisierung des Agenten. Der Europäische Gerichtshof im Vergleich zum U.S. Supreme Court", Bonn
2005 Visiting Professor, Georgetown University Law Center (GULC), Washington D.C., USA
2004-2008 Associate Lecturer, Lecturer and Senior Research Associate, University of Bonn Institute for Political Science and Sociology
2002-2004 Research Associate, Bonn Center for European Integration Studies (ZEI)
2001 Implementation of a research assignment to the Principle of Sustainability (own acquisition and third-party funded) for the Helmholtz Association of German Research Centres
2000-2001 Spokesman and Literary Editor, Baden-Baden, Nomos Publishing House
1999 Research Fellow, Brussels, Belgium Center for European Policy Studies (CEPS)
1999 Thesis: "Die Europäische Union im Legitimationstrilemma. Zur Rechtfertigung des Regierens jenseits der Staatlichkeit", Freiburg i. Br.
1997-1999 Doctorate, University of Freiburg i. Br.
1997-1998 Associate Lecturer, University of Freiburg i. Br. Seminar for Political Science