Permanent Positions:

• August 2000 - present: Professor, Institut für deutsche Sprache und Linguistik, Humboldt-Universität zu Berlin.
• Promoted to Full Professor, Department of Linguistics, University of Texas at Austin, as of September 2000.
• September 1993 - July 2000: Associate Professor, Department of Linguistics, University of Texas at Austin.
• September 1998 - present: Courtesy appointment in the Department of Philosophy, University of Texas at Austin.
• January 1990 - August 1993: Assistant Professor, Department of Linguistics, University of Texas at Austin.
• May 1988 - December 1989: Teaching position (Akademischer Rat) at the Seminar für natürlich-sprachliche Systeme, Eberhard-Karls-Universität, Tübingen.
• November 1986 - April 1988: Researcher (Wissenschaftlicher Mitarbeiter) at the Seminar für natürlich-sprachliche Systeme, Eberhard-Karls-Universität, Tübingen.
• May 1984 - October 1986: Teaching position (Wissenschaftliche Hilfskraft) at the Ludwig-Maximilians-Universität, München.
• November 1983 - April 1984: Researcher (Wissenschaftlicher Mitarbeiter) in the Sonderforschungsbereich "Grammatik und sprachliche Prozesse" at the Universität Konstanz, with Arnim von Stechow.

Temporary positions:

• August 1999: Lecturer, Eleventh European Summer School in Logic, Language and Information, Utrecht (course on Intonation and Information, with Christine Bartels)
• May 1998 - July 1998: Guest Scientist, Max Planck Institute for Psycholinguistics, Nijmegen.
• August 1997 - December 1997: Fellow, Institut of Advanced Studies, Hebrew University of Jerusalem
• September 1995 - May 1996: Fellow, Center for Advanced Study in the Behavioral Sciences, Stanford University.
• June 1995 - July 1995: Guest Scientist, IBM Germany Scientific Centre, Heidelberg (Consultant for machine translation project "Verbmobil").
• June 1994 - July 1994: Guest Scientist, IBM Germany Scientific Centre, Heidelberg (Consultant for machine translation project "Verbmobil").
• June 1993 - July 1993: Guest Scientist, Arbeitsgruppe Strukturelle Grammatik der Max Planck Gesellschaft, Humboldt Universität, Berlin.
• August 12-25, 1991: Lecturer at the Third European Summer School on Logic, Language and Information, Universität des Saarlandes, Saarbrücken.
• May 1991 - August 1991: Professor at the Department "Computerlinguistik", Universität des Saarlandes, Saarbrücken.
• June 1990 - August 1990: Researcher at the Sonderforschungsbereich 340 "Linguistische Grundlagen für die Computerlinguistik", Universität Tübingen.
• June 5-16, 1989: Lecturer at the First European Summer School on Logic, Language and Information, University of Groningen, Netherlands (Course on Genericity).

Other professional experience:

• 1985, 1986: Development of software (character editors for matrix printers).
• 1982 Journalist at Frankfurter Rundschau, a daily paper.
• Starting 1980: Scientific journalist for several widely circulated German newspapers and journals.