Lecturer, College of Engineering, University of Michigan, September, 2000 – 2006. Materials Science and Engineering, September, 2006-present.
Adjunct Lecturer, Department of Materials Science and Engineering, University of Michigan, January, 1996 – June, 2006.
Research Fellow, Department of Materials Science and Engineering, University of Michigan, May, 1998 - August, 2000.
Post-Doctoral Fellow, Biomechanics Research Laboratory, Department of Mechanical Engineering, University of Michigan, May, 1996 - May, 1997.
Senior Research Engineer, Materials Technology Department, Division of Research and Development, Intermedics Orthopedics, Inc., Austin, TX, December, 1992 - June, 1995.
Assistant Professor of Orthopedic Surgery, Director of Biomechanics, Medical College of Wisconsin, October, 1990 - November, 1992.
Visiting Lecturer in Mechanical Engineering and Applied Mechanics, University of Michigan, 1989-1990.
Assistant Professor of Locomotion Studies, Penn State University, 1988-1989.