Planning & Evaluation Regional Advisor, United Nations Children's Fund since 1988. Consultant, United Nations Development Program, Caracas, Venezuela, 1987-1988. Consultant, Latin American Economic System, Caracas, 1987.
General Secretary, 1986, General Secretary in Charge, 1985, Senior Advisor to the Presidency, 1985, Andean Development Corporation(s), Caracas. Minister of Coordination & Planning, Government of Bolivia, La Paz, 1984. Executive Director, Centro de Investigacibn у Consultoria (CINCO), La Paz, 1983-1984.
Consultant, Junta del Acuerdo de Cartagena, La Paz, Lima, 1983. Minister of Finance, Government of Bolivia, 1982. Executive Director, CINCO, La Paz, 1982.
Consultant, Planning and Statistics Department, Organization of American States, Washington, District of Columbia, 1981. Professor of Economic & Sociology, Universidad Mayor de San Andrbs, La Paz, 1979-1980.