He earned the prestigious Dr. habil. (2013) from the University of Gießen(geesan, Germany (History Department) which is the highest academic degree in Germany

He received his Dr. philosophy. (1999) also from the University of Hamburg,  (History Department)

He received his M.A. in History and Slavic Philology (1993) from the University of Hamburg

Professor of Estonian and General History at Tallinn University, Institute of History since September 200

Research Assistant at Nordost-Institut Lüneburg (Germany) from September 2005 to August 2008 

Elected Docent for General History at Narva College of Tartu University, where he also served as Head of the Humanities Department 

Visiting Lecturer in History and German Studies at Narva College of Tartu University from September 2002 to August 2004

Research Assistant at the Archive of the Institut Nordost-deutsches Kulturwerk, Lüneburg (Germany) from April 1998 to December 2001

Contract Lecturer (Eastern European History) at the History Department, University of Hamburg, from 1999 to 2001

Contract Lecturer (Baltic Studies) at the Institute for Finno-Ugric Studies, University of Hamburg, from 1996 to 2002

He began his career as a Research Assistant at the Department for Education Science, Institute for History (Eastern European History) at the University of the Federal Armed Forces Hamburg from January 1994 to March 1998