| 2000 - present | President |
| Michael Neff Associates | |
| Culver City, CA | |
| 2000 - present | Partner |
| Chemistry of Concrete | |
| Goleta, CA | |
| 1984 - 2000 | Senior Member Technical Staff, Materials Science |
| Seal Laboratories | |
| El Segundo, CA | |
| 1980 - 1983 | Consultant |
| Stoody Company | |
| Los Angeles, CA | |
| 1980 - 1985 | Instructor, Mechanical Engineering & Materials Science |
| University of Southern California | |
| Los Angeles, CA | |
| 1977 - 1980 | Research Associate & Metal Crystal Growth Laboratory Manager |
| Massachusetts Institute of Technology | |
| Cambridge, MA |