| 2021 - present | Chairman of the Board of Directors, Klinik Gut AG |
| 2020 - 2021 | Member of the Board of Directors, Klinik Gut AG |
| 2011 - present | Chairman of the Board of Directors, Studio Meier SA, Minusio |
| 2008 - present | Chairman of the Board of Directors Geocloud AG, Schlieren |
| 2006 - present | Chairman of the Board of Directors BSF Swissphoto AG, Regensdorf |
| 2001 - present | Chairman of the Board of Directors Swissphoto Group AG, Regensdorf |
| 1992 - present | Chairman of the Board of Directors Grünenfelder und Partner AG, Domat/Ems |
| 2011 - 2019 | Chairman of the Board of Directors, ITV Consult AG, Regensdorf |
| 2006 - 2016 | Member of the Board of Directors, SWR AG, Schlieren |
| 2000 - 2004 | Managing Director & Board of Directors, Endoxon AG, Lucerne |
| 1999 - 2002 | Managing Director & Board of Directors, Swissair Flight Support AG, Glattbrugg |
| 1994 - 2009 | Managing Director, BSF Swissphoto AG, Regensdorf |
| 1992 - 2017 | Managing Director, Grünenfelder und Partner AG, Domat/Ems |
| 1990/1992 | Takeover of J. Grünenfelder AG / transformation into Grünenfelder und Partner AG |
| 1988 - 1990 | Managing Director, J. Grünenfelder AG, Domat/Ems |
| 1986 - 1987 | Postgraduate studies in Building Physics, HTW Chur (University of Applied Sciences Graubünden) |
| 1984 - 1987 | Project Manager, J. Grünenfelder AG, Domat/Ems |
| 1983 | Qualified as a Federally Licensed Surveyor (eidgenössisches Patent) |
| 1981 - 1983 | Project manager, Jenatsch und Hegland, Chur |
| 1981 | Degree in Rural Engineering (Diplom), ETH Zurich |
