- Scientific Advisory Board of GlobaCure, a non-profit initiative incorporated in the USA dedicated to advancing global health through innovative drug and vaccine development. https://globacure.org
- Director, Centre for Digital Public Health (CDPH), and Senior Advisor, R & D, at the Indian Institute of Public Health Hyderabad. (from 1st July 2024 onwards).
- Interim Director, Indian Institute of Public Health, Hyderabad and Interim Head of Dr. Cyrus Poonawalla Centre for Infectious diseases.(1st January 2024 onwards)
- Advisor, Indian Institute of Public Health, Hyderabad (1st November 2023 onwards)
- Adjunct Faculty, Public Health Foundation of India (September 2022 onwards)
- INSA Emeritus Scientist (September 2022 onwards)
- Dr. A.S. Paintal Distinguished Scientist Chair of ICMR, School of Life Sciences, Jawaharlal Nehru University, New Delhi for five years (1st June 2018-August,2022)
- BSR_UGC Faculty, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 2017-2018
- Affiliate Professor, Centre for Infectious Diseases, Seattle, USA 2017-2020
- Director, Human Resource Development Centre of UGC, Jawaharlal Nehru University, New Delhi 2014-2016
- 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.
