| 1976–1978. | Instructor, Philosophy, University of Wisconsin at Milwaukee. |
| 1978–1981. | Assistant Professor, Philosophy, University of Wisconsin at Milwaukee. |
| 1998–1999. | Lecturer, Philosophy, San Jose State University. |
| 1985–1993. | Hardware Technical Writer, Tandem Computers, Inc. |
| 1993–1997. | Senior Technical Writer, Sun Microsystems, Inc. |
| 1997–2001. | Senior Technical Writer, BEA Systems, Inc. |