2012 – Present, Director, Minda de Gunzburg Center for European Studies, Harvard University

1998 - Present, Professor of Government, Department of Government, Harvard University

1998 - Present, Senior Scholar, The Harvard Academy for International and Area Studies, Harvard University

2000 - 2006, Chair, Committee on Degrees in Social Studies, Harvard University

2012 – 2016, Member, Executive Committee, Weatherhead Center for International Affairs

1995 - Present, Research Associate, Weatherhead Center for International Affairs, Harvard University

1991 - Present, Faculty Associate, Davis Center for Russian and Euroasian Studies, Harvard University

1990 - Present, Resident Faculty Associate, Center for European Studies, Harvard University

1995 - 1998, Associate Professor of Government, Department of Government, Harvard University

1991 - 1994, Assistant Professor of Government, Department of Government, Harvard University

1980 ‑ 1984, Lecturer in Sociology, Institute of Sociology, Jagiellonian University, Krakow, Poland