09/01/05-Present - Associate Professor, Department of Mathematics, Texas A&M University, College Station, TX

07/16/01-06/01/05 - Assistant Professor, Department of Mathematics, Texas A&M University, College Station, TX

09/01/99-07/13/01 - Postdoctoral Fellow, Institute for Mathematics and Its Applications, University of Minnesota, Minneapolis, MN

12/01/98-08/25/99 - Research Associate (Part-time), Chevron Petroleum Technology Company, La Habra, CA

06/15/98-09/15/98 - Summer Intern, Chevron Petroleum Technology Company, La Habra, CA