| 1970 - | Study trips to works by master builders in Austria, Belgium, England, France, Germany, Ireland, Italy, the Netherlands, Portugal, Scotland, Spain, Switzerland and the US. |
| 1978 - 1981 | Assistant to Aldo van Eyck and Theo Bosch, Amsterdam Residential developments in the Jordaan in Amsterdam, Faculty of Arts in Amsterdam and Huize Padua in Boekel |
| 1980 - | Guest lectures and project supervision at various Academies of Architecture and Universities of Technology |
| 1980 - 1990 | Lecturer at the Academy of Architecture in Amsterdam |
| 1981 - 2006 | Lecturer at the Academy for Architecture and Urban Design in Tilburg, graduation coordinator |
| 1981 - 1986 | Independent architect at Martien Jansen Architect, Eindhoven |
| 1986 - 1989 | Member of the board at BNA, Kring Zuidoost Brabant |
| 1986 - 1996 | Employed at OD 205 architectuur, stedebouw, onderzoek en landschap bv |
| 1987 - | External state-appointed examiner /external expert during the graduation process at various Academies of Architecture |
| 1987 | Guest lecturer at the Amsterdam School of Architecture, Urban Development and Landscape Architecture |
| 1988 - | Consultant at the 't Hool Foundation in Eindhoven |
| 1990 - 1993 | A member of the Q study group in Eindhoven |
| 1990 - 1996 | Management of OD 205 architectuur, stedebouw, onderzoek en landschap bv in Eindhoven |
| 1996 | Establishment of Studio M10 Architecture and Urban Design bv |
| 1996 - | Architect / Chief Executive Officer Studio M10 |
| 2000 - 2003 | A member of the StadBeeld Committee of the municipality of Eindhoven |
| 2003 - 2007 | Chairman of the StadBeeld Committee of the municipality of Eindhoven |
| 2009 - | Boardmember of the Jos Bedaux Architect foundation |