Registrar, United Nations Convention on a Code of Conduct for Liner Confs, Shipping Division, United Nations Conference on Trade and Development. Advisor in Shipping, Shipping Division, United Nations Conference on Trade and Development, Geneva, 1979-1985. Permanent Secretary, Ministry of Shipping, Aviation & Tourism, Sri Lanka, 1970-1977.
Director, Economic Affairs, General Treasurer, Government of Sri Lanka, 1963-1969. Economist, Economic Research Department, Central Bank of Sri Lanka, 1953-1963.