* Associate Professor: Department of Biotechnology, Indian Institute of Technology Madras, Chennai (June 2010- present).
* Assistant Professor: Department of Biotechnology, Indian Institute of Technology Madras, Chennai (February 2007- May 2010).
* Faculty Scientist: Department of Medicine, University of California San Diego, USA (November 2004 - January 2007).
* Post-doctoral Fellow: Department of Medicine, University of California San Diego, USA (January 1999 - October 2004).