- Since 2006:
Research Fellow at the Centre for General Linguistics.
- SoSe 2010
Replacement professorship for pragmatics at the University Duisburg-Essen, Department of German studies/Linguistics.
- 2003 - 2006:
Assistant Professor at the University of Southern Denmark in Humanistic Information Science.
Research Fellow at the Centre for General Linguistics, Typology, and Universals Research.
- 1999 -2001:
Research Fellow in DFG-Project LA 633/5-1 on 'Semantic and Pragmatic Aspects of the Interpretation of Dialogue' at the Humboldt University Berlin, Germany.
- 1998 - 1999:
Assistant Position at the Institute for Theoretical Computer Science and Mathematics at the University of the Bundeswehr Neubiberg, German
- 1993 -1996:
Postgraduate Fellow in the Doctoral Program 'Sprache, Information, Logik' (Language, Information, Logic) hosted at the Centre for Information and Language Processing (CIS), Ludwig-Maximilians University Munich, Germany.