Regional Malaria Advisor, Malaria Control, World Health Organization since 1990. Malariologist, Communicable Disease Control, World Health Organization, Indonesia, 1982-1990, Bangladesh, 8082, Indonesia, 1973-1980. Chief, Malaria Control, Ministry of Health, Government of Nepal, 1969-1973.
Malariologist, Nepal Malaria Eradication Organization, Ministry of Health, Nepal, 1959-1969. District Medical Officer, Ministry of Health, Nepal, 1958-1959.