Career at The University of Amsterdam
- Wetenschappelijk medewerker Latijn (Assistant Professor of Latin), University of Amsterdam 1967-1971
- Lector in Latin Linguistics (Associate Professor), University of Amsterdam 1971-1980
- Professor of Latin Linguistics, University of Amsterdam 1980-1986
- Professor of Latin Linguistics and Literature, University of Amsterdam 1986-2004
Visiting Professorships Università degli Studi di Bologna 1984
- Université de la Provence (Aix-en-Provence) 1987The Pennsylvania State University 1988
- Università di Pavia 1990
- Università di Venezia 1995
- Oxford University 1998, 2004
- The University of Chicago 2005, 2008
Visiting Fellowships
- Wolfson College, Oxford (Michaelmas term 1998)
- All Souls College, Oxford (Hilary term 2001)
- St. John’s College, Oxford (2003/4)
Lectures
Universities of Bologna, Napoli, Pavia, Venezia, Düsseldorf, Eichstätt, Köln, Louvain la Neuve, Krakow, Lublin, Warsaw, Alicante, Madrid (Autonoma and Complutense), Oviedo, Santiago de Compostela, Sevilla, Tenerife (La Laguna), Zaragoza, Bucarest, Cambridge, Manchester, Oxford, Paris (Sorbonne), Uppsala, Odense, Jerusalem (Hebrew University), The University of Michigan (Ann Arbor), The University of Chicago, The Pennsylvania State University, UCLA, Santa Fe (Arg.), São Paulo.
Other professional activities
- Dean of the Faculty of Arts, The University of Amsterdam 1975-1978
- Founder and Dean of the Faculty of Linguistics and Literature, Catholic University Brabant at Tilburg 1979-1983
- Member of the Advisory Council on Higher Education (ARHO) of the Minister of Education 1985-1989
- Vice-President of the Dutch Science Foundation (N.W.O.) 1988-1996
- Member of the Foresight Committee (OCV) of the Ministry of Education 1992-1997
- Vice-President for Academic Affairs, The University of Amsterdam 1996-2002
- Board member of the Duitsland Instituut 2004-2009
- Presidente del Nucleo di Valutazione dell' Unversità Roma III 2007-2013