| 2010-present | Postdoctoral research associate, Environmental Sciences department, Brookhaven National Lab |
| 2005-2009 | Graduate Research Assistant, Department of Chemical and Biomolecular Engineering, Rice University |
| 2003-2005 | Graduate Research Assistant, Department of Chemical and Biological Engineering, Iowa State University |
| 2001-2002 | Research Associate, Department of Chemical Engineering, Indian Institute of Technology |