- Full Professor, University of Padova, since November 2008.
- Full Professor, University of Salerno, January 2005 - October 2008.
- Associate Professor, University of Salerno, November 2004 - December 2004.
- Invited Professor, Research Institute for Mathematical Sciences (RIMS), Kyoto University, December 1999 - March 2000.
- Associate Professor, University of Bergamo, November 1999 - October 2004.
- Visiting Professor, University of California at Davis, September 1997 - February
- Invited Professor, University Louis Pasteur, Strasbourg, October 1996 - February
- Research Fellow, University of Padova, March 1994 - October 1999.
- Maître de Conférences, University of Artois - Pôle de Lens, September 1993 -
- A.T.E.R., University of Paris XI, Orsay, January 1993 - September 1993.