University of Calgary		Department of Computer Science / Associate Professor	Jul 06 -- present
University of Calgary		Department of Computer Science / Assistant Professor	Jul 01 -- Jul 06,
IMPA / Visgraf		Visiting Professor / Researcher	Dec 07 - Apr 08, Jun 08 - Jul 08
Technical University of Lisbon		Visiting Professor / Researcher	Apr 08 - May 08
Purdue University / PURPL, PURVAC		Visiting Professor / Researcher	Aug 07 - Dec 07
Vienna University of Technology		Visiting Professor / Researcher	Jul 07 - Aug 07
Cambridge Animation Systems (now Toon Boom)		Senior Graphics Software Engineer	Aug 00 - Jun 01
University of Alberta		Department of Computing Science / Faculty Lecturer	Jul 99 - Jul 00
TecGraf / PUC-Rio & PETROBRAS		Senior Visualization Software Engineer	Jan 94 - Jan96
Catholic University of Petropolis		Department of Computing Science / Senior Faculty Lecturer	Jul 90 - Jul 95