| 2002- |
Professor, Department of Production and Quality Engineering, NTNU |
| 2002-2003 |
Senior Engineer at the Norwegian Rail Administration |
| 2002- |
Scientific Advisor , SINTEF Safety and Reliability |
| 2000-2002 |
Adjunct Professor, Department of Production and Quality Engineering, NTNU |
| 1997-2002 |
Senior Scientist at SINTEF Safety and Reliability |
| 1991-1996 |
PhD student at NTNU |
| 1987-1997 |
Scientist at SINTEF Safety and Reliability |
| 1986-1991 |
Lecturer (part time), Department of Mathematical Statistics, NTNU |
| 1985-1986 |
Scientific Assistant, Department of Mathematical Statistics, NTNU |