Employment history
| 2018 – present | Water Resources Consultant UGPEACE, Inc. |
| 2016 – present | Water Resources Consultant Unifrutti Tropical Phils. Inc. |
| 1998 – present | Geohydrological/Geophysical Contractor Unifrutti Tropical Phils. Inc. |
| 1994 – present | Geohydrological/Geophysical Contractor Filipinas Dravo Corporation |
| 1988 – present | Geohydrological/Geophysical Contractor Lapanday Group of Companies |
| 1984 – present | Geological/Geohydrological/Geophysical Contractor/Consultant |
| 2014 – 2015 | Hydrogeoloical Consultant United CADDTech Philippines, Inc. |
| 2014 – 2015 | Geological Consultant Datem Mineral Resources Corporation |
| 2013 – 2016 | Project Development Consultant AlloyMTD Philippines Inc. |
| 2001 – 2002 | Geohydrological Consultant Benguet Corporation |
| 1996 – 2007 | Geohydrological/Geophysical, Water Resources & Environmental Consultant Del Monte Philippines, Inc. |
| 1996 – 2004 | Chairman of the Board Mining Associates, Inc. |
| 1994 – 1996 | Geohydrological Consultant JV Ayala Management Corporation |
| 1993 – 1997 | Deepwell Drilling Consultant E.B. Villarosa & Partner Co., Inc. |
| 1993 – 1996 | Geohydrological Consultant Bukidnon Resources Co. Inc. |
| 1989 – 2013 | Geohydrological Contractor Engineering and Development Corporation of the Philippines (EDCOP) |
| 1989 – 2002 | Accredited Individual Consultant Ref. Cc # 5287 Asian Development Bank |
| 1989 | Geohydrological/Geophysical Consultant Total Consultancy Services Incorporated |
| 1989 | Geohydrological/Geophysical Consultant Economic Support Fund Secretariat (ESF) thru TAMS Consultants, Inc. New York |
| 1987 – 1993 | Geohydrological Consultant Development of Environmental Systems Incorporated |
| 1985 – 1987 | Operation & Management of Water System Meralco Village 1, Bo. Lias, Marilao, Bulacan |
| 1984 – 1996 | Geohydrological/Geophysical Consultant Philippine Packing Corporation, (Del Monte Philippines, Inc.) |
| 1979 – 1984 | President & Chairman Geosystems Consultants, Inc. |
| 1976 – 1979 | President & Chairman TerraConsult, Inc. |
| 1974 – 1976 | Resident Manager Omico Mining and Industrial Corporation |
| 1974 – 1976 | Geohydrological/Geophysical Consultant Certeza Geophysical Exploration Inc. |
| 1971 – 1973 | Special Assistant to the President Certeza Geophysical Exploration Inc. |
| 1969 – 1971 | Assistant Area Representative Compagnie Générale de Géophysique (CGG) Philippines) |
| 1968 | Geologist Inco Mining Corporation |
| 1967 | Junior Geological Engineer Benguet Consolidated, Inc. |
| 1962 – 1967 | Exploration Geologist Samar Mining Company, Inc. |
Education, scholarship and trainings
- Bachelor of Science in Mining Engineering, Mapúa Institute of Technology, 1962
- Geology and Geochemistry in Mineral Exploration, Samar Mining Company/Elizalde & Company, 1963 – 1965
- Applied Geophysics for Geohydrology, Mineral Exploration, and Civil Engineering Purposes thru ASTEF Scholarship in France in 1968 – 1969 at the:
- Centre de Recherches Geophysique (CRG)
- Bureau de Recherches Geologue et Miniere (BRGM)
- Compagnie Generale de Geophysique (CGG)