| Jan. 2014- | Professor | Indian Institute of Astrophysics, Koramangala, Bangalore, India, 560 034 |
| April 2007-Dec. 2013 | Assoc. Professor | Indian Institute of Astrophysics, Koramangala, Bangalore, India, 560 034 |
| Oct. 2002 - Mar. 2007 | Scientist D | Indian Institute of Astrophysics, Koramangala, Bangalore, India, 560 034 |
| Nov. 1996- Sept. 2002 | Scientist C | Indian Institute of Astrophysics, Koramangala, Bangalore, India, 560 034 |
| 1999-2001 | Visiting Scientist | James Franck Institute, Department of Chemistry, University of Chicago, IL - 60637, USA |
| 1993-October '96 | Research Associate | Prof Karl F Freed, James Franck Institute, Department of Chemistry, University of Chicago, IL-60637, USA |
| 1991-October '93 | Research Associate | Prof T T Nguyen Dang, Department of Chemistry, University of Laval, Quebec, G1K 7P4 CANADA |
Dr Mrigendranath Ghosh Gold Medal award for securing highest marks in Chemistry at B.Sc. examination held in 1981 from University of Burdwan