2007-2011 Substitute Professor, English Linguistics

University of Cologne, Germany

Since 2005 Lecturer, English Linguistics

University of Cologne, Germany

2001-2004 Lecturer, English Linguistics

University of Zürich, Switzerland

1996-2001 Lectuer, English Linguistics

University of Freiburg, Germany

1994-1995 Teaching Assistant, German Linguistics

University of Washington, USA

1993-1994 Lectuer, English Studies

University des Saarlandes, Germany

1991 Teaching Assistant, German Linguistics

University of Maryland, USA