| 1994 - present | Consulting Engineer / President |
| Cox & Company | |
| Los Angeles, CA | |
| 1970 - 1994 | Principal Engineer |
| Failure Analysis Associates | |
| Los Angeles, CA | |
| 1970 - 1975 | Post Graduate Research Engineer |
| Materials Department | |
| University of California, Los Angeles | |
| Los Angeles, CA | |
| 1970 | Laboratory Technician |
| Materials and Processing Division | |
| McDonnell Douglas Corporation | |
| Long Beach, CA |