| 1989 - present | Vice President / General Manager |
| SEAL Laboratories | |
| El Segundo, CA | |
| 1985 - 1989 | Manager, Metallurgy and Materials Science |
| Scanning Electron Analysis Laboratories, Inc. | |
| Los Angeles, CA | |
| 1980 - 1984 | Manager, Metallurgical Services |
| Scanning Electron Analysis Laboratories, Inc. | |
| Los Angeles, CA | |
| 1978 - 1980 | Group Head, Materials Failure Analysis |
| Hughes Aircraft Company | |
| Culver City, CA | |
| 1976 - 1978 | Member of Technical Staff |
| Rockwell International, B-1 Division | |
| Los Angeles, CA | |
| 1974 - 1976 | Post-doctoral Research Fellow |
| University of California, Los Angeles | |
| Los Angeles, CA |