2020- Irving Langmuir Distinguished University Professor of Chemical Sciences and Engineering,
University of Michigan, Ann Arbor, MI
2012- Joseph B. and Florence V. Cejka Professor of Engineering, University of Michigan, Ann Arbor, MI
2008-2012 Professor, Department of Chemical Engineering, Department of Materials Science and Engineering,
Department of Biomedical Engineering, Department of Macromolecular Science and Engineering,
University of Michigan, Ann Arbor, MI
2003-2008 Associate Professor, Department of Chemical Engineering, University of Michigan, Ann Arbor, MI
2001-2003 Associate Professor, Chemistry Department, Oklahoma State University, Stillwater, OK
1996-2001 Assistant Professor, Chemistry Department, Oklahoma State University, Stillwater, OK
1997, 1999 Visiting Professor, Hamburg University, Hamburg, Germany
1992-1996 Postdoctoral Associate, Chemistry Department, Syracuse University, Syracuse, NY
1990-1992 Research Associate, Laboratory of Photochemistry, Chemistry Department, Moscow State University