OIO (PhD-student) at the University of Nijmegen, at the Computer Science Department from 1990 till 1994.
From February 1995 till March 1998, post-doc researcher involved in the OVIS-project (Openbaar Vervoer Informatie Systeem), at the department of Humanities Computing of the University of Groningen.
From March 1998 till July 2000, senior researcher at DFKI, Saarbrücken, involved in the Verbmobil-project. From November 1999 till March 2000, on leave from DFKI, consultant at AT&T Shannon Laboratory.
From July 2000 till July 2003, KNAW fellowship at the department of Humanities Computing of the University of Groningen.
From August 2003 till September 2005, lecturer at the department of Humanities Computing of the University of Groningen, and affiliated to the Pionier project Algorithms for Linguistic Processing.
From October 2005 till October 2006, senior researcher at the Max Planck Institute for Psycholinguistics. From July 2006 till September 2006, on leave from MPI, sabbatical with the Research Group on Mathematical Linguistics at the Rovira i Virgili University.
From November 2006, lecturer at the School of Computer Science of the University of St Andrews.
Some links related to NLP
Reviewer for IWPT 2015, Bilbao, 22-24 July, 2015.
Member of programme committee of Formal Grammar 2015, Universitat Pompeu Fabra, Barcelona, Spain, August 8–9, 2015.
Reviewer for ACL-IJCNLP 2015, Beijing, China, Jul 26-31, 2015.
Member of program committee of FSMNLP 2015, Düsseldorf, Germany, June 22-24, 2015.
Reviewer for EMNLP 2014, Doha, Qatar, Oct 25-29, 2014.
Reviewer for COLING 2014, Dublin, Ireland, August 23-29, 2014.
Reviewer for ACL 2014, Baltimore, June 22-27, 2014.
Reviewer for EACL 2014, Gothenburg, Sweden, April 26–30, 2014
Member of programme committee of IWPT 2013, Nara, Japan, November 13-15, 2013.
Reviewer for EMNLP 2013, Seattle, USA, October 18-21, 2013.
Reviewer for CoNLL-2013, Bulgaria, August 8-9, 2013.
Reviewer for ACL2013, Bulgaria, August 4-9, 2013.
Member of standing committee of Formal Grammar 2013, Düsseldorf, Germany, August 10-11, 2013.
Reviewer for NAACL-HLT 2013, Altanta, June 10-12, 2013.
Chair of FSMNLP 2013, St Andrews, Scotland, July 15-17, 2013.