Assistant Secretary-General, Office(s) of the Director-General for Development & International Economic Coop, United Nations since 1989. Assistant President, General Affairs, International Fund for Agricultural Development, Rome, 1987-1989. Ambassador, Deputy Permanent Representative of Venezuela to the United Nations, Geneva, 1986-1987.
Minister Counsellor, Permanent Mission of Venezuela, Geneva, 1983-1986, New York, 1980-1983. Executive Assistant to the Minister of State for International Economic Cooperation, Caracas, 1977-1980. Personal Representative of Minister of State for International Economic Cooperation to the Conference on International Economic Cooperation, Paris, 1976-1977.
Executive Secretary, Presidential Commission on the Nationalization of Venezuelan Iron Ore Industry, 1974-1975.