| 1992 - Present |
President, MicroDataware, a specialty technical software development and publishing firm in Hayward, CA. |
| 1994 - Present |
Lecturer in Forensic Microscopy for the University of California, Berkeley, and the California Department of Justice, Bureau of Forensic Services, California Criminalistics Institute, Sacramento. |
| 1986-1991 |
Founder and President of Forensic Analytical Specialties, Inc., (Hayward, CA) and Forensic Analytical Specialties - Southwest, Inc., (Rancho Dominguez, CA) sister corporations engaged in environmental laboratory analysis, field environmental project management, and limited forensic consulting. |
| 1984-1986 |
Consulting Forensic Scientist with the Institute of Forensic Sciences Criminalistics Laboratory in Oakland, CA. |
| 1978-1984 |
Criminalist I - III with the Fresno County Sheriff's Department, Fresno, CA. |
| 1982-1984 |
Founder and owner of San Joaquin Microscopy, a small business enterprise engaged in contract microscopy analysis and research in Fresno, CA. |