President, Agro Industrial Management and Consultancy Inc. (AIMCON)
Board Director, Philippine Technology Development Ventures, Inc. (1994-2013)
Trustee, Small Enterprises Research and Development Foundation (SERDEF) 2005 – 2012
Deputy Project Manager of UNICO (Japan) SERDEF Consultancy Consortium
Development Bank of the Philippines (DBP) Industrial and Support Services Expansion Program II (2001-2005)
Consultant, San Miguel Corporation, Magnolia Operations – (1992-93)
Undersecretary, Department of Science and Technology (1989-1992)
Technical Manager, Central Pacific Region- The Coca-Cola Export Corporation, Covering Concentrate Manufacture Research and Development, Scientific Regulatory Affairs, Bottlers’ and Suppliers’ Technical Services, Quality Assurance, Engineering (1967-1987)
President, AMV Foods – (1993-1998)
Sr. Consultant on Chemicals and Food Processing, Centre for Consultants (1988-89)
Vice President and Treasurer, Buenavista Agri Ventures, Inc. (1988-89)
Professorial Lecturer, University of the Philippines MBA Program (1967-82)
Professorial Lecturer, Development Academy of the Philippines (1974-76)
Research Engineer, The Babcock & Wilcox Company, Ohio, U.S.A. (1966-67)
Graduate Assistant, University of Maryland (1962-66)
Cost Control Trainee, Procter & Gamble Philippines Manufacturing Corporation. (1962)