2008
Habilitation at the University of Greifswald (thesis: 'Handlungsspielräume fürstlicher Politik im Mittelalter. Der südliche Ostseeraum von der Mitte des 12. Jahrhunderts bis in die frühe Reformationszeit' [Mittelalter-Forschungen, Bd. 28], Ostfildern 2009)

2001
PhD (thesis: 'Stiftsbiographien – Die Kleriker des Stuttgarter Heilig-Kreuz-Stifts 1250-1552' [Schriften zur südwestdeutschen Landeskunde, Bd. 38], Leinfelden-Echterdingen 2002)

1998-2000
Graduate School „Ars and Scientia in the Middle Ages and Early Modern Times“ of Tübingen University

1991-1997
Study of History and Latin at the University of Tübingen

Since 2009
Chair of Regional History with focus of the History of Schleswig-Holstein in the Middle Ages and Early Modern Times at the University of Kiel, Director of the History Department

2008-2009
Acting Professor at the History Department of Göttingen University (Chair of Prof. Dr. Rexroth)

2008
Visiting Research Fellow at the SFB 537 „Institutionalität und Geistlichkeit“ at Dresden University; also teaching at the History Department of Greifwald University

2007 – 2008
Acting Professor of Medieval History and Historical Ancillary Sciences at the History Department of Greifswald University

2001 – 2007
Assistant Professor of Medieval History at Greifwald University (Chair of Prof. Dr. Karl-Heinz Spieß)

2000 – 2001
Research Associate at the Chair of Medieval History and Historical Ancillary Sciences at the History Department of Greifswald University

Member of the Graduate School Human Developments in Landscapes of Kiel University

Member of the Schleswig-Holstein History Association

Boardmember of the Hohenstaufen History Association

Boardmember of the History Associaition of Göppingen

Member of the Medieval History Center Greifswald

Member of the Interdisciplinary Center of Gender Studies Greifswald (IFZG)

Member of the Baden-Württemberg History Association

Member of the Pomeranian Association of History, Ancient History and Art

Member of the Mecklenburg Association of History and Ancient History

Jelena Steigerwald, M.A.: Memory places in the Danish-German borderland in the 19th and 20th century (working title)

Stefan Inderwies, M.A.: The relations between the Counts of Holstein and urbane management committees shown by the example of towns built by the House of the Schauenburger in the 13th century.

Burkhard Büsing, M.A.: Confessionalization in Schleswig and Holstein

Matthias Glasow, M.A.: Die schwere Last der Verganenheit - Der Umgang mit dem Nationalsozialismus an der CAU nach 194

Nina Kühnle, M.A.: Städtische Gemeinschaft und adlige Herrschaft in der mittelalterlichen Urbanisierung am Beispiel der Grafschaft/des Herzugtums Württemberg

Swantje Piotrowski, M.A.: Der Gottorfer Hof und die Gründung der universität zu Kiel. Hofämter und Diplomatie, Forschung und Lehre. Zu den politischen und gelehrten Netzwerken von 1665-1713

Sabrina Keit: Political Culture and „Geschichtsgebrauch“ in the Schleswig-Holstein of the 1980ies