| 1988 - present | Chairman, Director of R&D |
| Carbite Golf, Inc. | |
| San Diego, CA | |
| 1976 - 1995 | Shira Consultants, Inc. |
| San Diego, CA | |
| 1980 - 1984 | Co-founder, Financier, Chairman |
| Advanced Robotics, Inc. | |
| 1970 - 1976 | Owner-Manager |
| Shira Welding Supply Company | |
| San Diego, CA | |
| 1968 - 1970 | Manager |
| Marketing and Product Development | |
| Data Science Corporation | |
| 1958 - 1968 | Manager |
| Materials and Processes Engineering Laboratories | |
| Rocketdyne, Division of American Rockwell | |
| 1953 - 1958 | Field Service |
| The Lincoln Electric Company | |