| 1976 - 1980 | Research engineer at the Norwegian University for Science and Technology (NTNU). |
| 1981 - 1996 | Research engineer at SINTEF. |
| 1996 | Computer engineer at SINTEF porting ultra-sound scanner software to Windows NT. |
| 1985 - 1995 | Manager of a computer installation cooperation project with a budget of USD 150- 300,000. |
| 1997 - | Managing own software company Frigosoft with main product
FrigoSim. Operated during free time after October 1999. |
| 1999 - 2003 | System developer at Interconsult (now Cowi). |
| 2003 | System developer at the Brønnøysund Register Centre. |
| 2003 - 2007 | Adviser at the Brønnøysund Register Centre. |
| 2007 - | Senior adviser at the Brønnøysund Register Centre. |