Senior Industrial Development Officer, Technology Development Division, Biotechnology & Genetic Engineering, United Nations Industrial Development Organization since 1990. Visiting Professor, Swiss Tropical Institute, Basel, 1989-1990. Scientist, R&D International, CibaGeigy Limited, Basel, 1986-1990.
Director, Rch, Hindustan Ciba-Geigy Limited, Bombay, 1980-1986. Professor, Postgrad Institute of Medical Education & Rch, Chandigarh, India, 7080. Deputy Director, National Institute of Communicable Diseases, Delhi, India, 1965-1970.
Senior Rch Officer, VP Chest Institute, India, 1960-1965. Rch Fellow, National Rch Council, University of Western Ontario, Canada.