- Director, Academic Staff College, Jawaharlal Nehru University, New Delhi from 2014-2016
- Director, AIRF, Jawaharlal Nehru University, New Delhi (Dec. 2011-Dec. 2013)
- Dean, School of Life Sciences, Jawaharlal Nehru University, New Delhi, March 2009-March2011
- Professor, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 1999- present.
- Associate Professor, School of Life Sciences, Jawaharlal Nehru University, New Delhi, Dec. 1990-1998.
- Pool Officer, Council of Scientific and Industrial Research, India, March 1989 - Oct. 1990.
- Visiting Research Fellow, Hershey Medical Centre, Hershey, Pennsylvania, U.S.A. 1986-1988.
- Visiting Research Fellow, University of Texas Health Science Centre, Houston, Texas, U.S.A., 1986.
- Research Associate, School of Life Sciences, University of Hyderabad, A.P., 1984-1985.
- Part-Time Lecturer, Government Women's College, Karimnagar, A.P., 1983-1984.
- Lecturer, Singareni Collieries Women's College, 1978.
