| > June 2022 | Professor in Evidence-Based Transition to Animal-Free innovations, Utrecht University, The Netherlands |
| >2018 | Honorary SKOU professorship at Aarhus University, Denmark |
| 2017 | 3 months’ visiting professorship at Aarhus University, Department of Clinical Medicine, Denmark |
| >2017 | Professor in Evidence-Based Laboratory Animal Science, RadboudUMC |
| 2005 – 2017 | Professor in Laboratory Animal Science and Managing Director of Centraal Dierenlaboratorium (central animal facility), Radboud University Medical Center (RUMC), Nijmegen, The Netherlands. |
| 1997 – 2005 | Professor in Laboratory Animal Science and Comparative Medicine, Biomedical Laboratory, Faculty of Health Sciences, University of Southern Denmark – Odense and head of the Biomedical Laboratory (central animal facility) |
| 1996 – 1997 | Assistant Professor, Biomedical Laboratory, University of Southern Denmark |
| 1989 – 1996 | Animal Welfare Officer, head of the animal unit, Animal Welfare Officer and project manager at the Diet & Health Research section, Unilever Research Laboratory, Vlaardingen, the Netherlands |
| 1987 – 1991 | Thesis: “Diet and nephrocalcinosis in the laboratory rat”, Department of Laboratory Animal Science, Utrecht University, the Netherlands. Supervisors: Prof. Dr. L.F.M. van Zutphen and Prof. Dr. A.C. Beynen |
| 1986 – 1987 | Biomedical research into hypertension in SHR and SHR/SP rats, Japan, sponsored by a grant from the Japanese government (Monbusho). |