- Consultant, Bolivar Program. Costa Rica, 1995.
An sponsored program of the Interamerican Bank of Development for technology transfer in Latin-America countries.
- Consultant. Costa Rica, 1992-1996.
Engineering consulting services for the local industry in energy management, industrial water conditioning, and pollution prevention.
- CODETEC. Brazil, 1992.
Company for Technological Development of the State University of Campinas. Five-month internship in multipurpose plant design for organic synthesis, and natural extraction of pharmaceutical products.
- RECOPE. Costa Rican Petroleum Refining Company, 1990.
Internship Industrial Safety Evaluation.