Ambassador, Permanent Representative of Costa Rica, Vienna, Permanent Mission of Costa Rica since 1989. Ambassador of Costa Rica to Austria, since 1988. Alternate Representative of Costa Rica to International Atomic Energy Agency, Vienna, since 1984.
Vice President, Interamerican Nuclear Energy Commission, United States of America, 1988-1990. President, Atomic Energy Commission of Costa Rica, 1982-1986. Director, Environmental Rch Center, University of Costa Rica, 1982-1985.
Director, Organic Chem Division, School of Chem, University of Costa Rica, 1974-1978.