Professor. (2006-Present). University of Sherbrooke. Canada.
Visiting professor. (2010-2011). King Saud University. Saudi Arabia.
Associate Professor. (2000-2006). University of Sherbrooke. Canada.
Visiting Professor. (2002-2003).
Assistant Professor. (1996-2000). University of Sherbrooke. Canada.
Visiting professor. (1999-1999). University of Pau and the Adour countries. France.
Postdoc. (1993-1996). University of Montreal. Canada.