| 1991 - 1992 | Attorney, Dr. iur. Hansheiri Inderkum law office, Altdorf |
| 1992 | Associate researcher at the Department of Justice of the Canton of Uri, adaptations of the cantonal law of Uri to the EEA law |
| 1992 - 2001 | Attorney, ATAG Ernst & Young AG, Lucerne (since 2000 Ernst & Young AG) |
| 1995 - 1998 | Head of Legal Services Department Lucerne at Ernst & Young AG, Lucerne |
| 1998 - 2001 | Post graduate studies at the University of St. Gallen, Executive MBA HSG |
| 1999 - 2001 | Head of the Regional Office of Ernst & Young AG, Lucerne |
| 2003 - 2008 | Co-owner and partner of Gruber & Brücker, Lucerne |
| Since 2007 | Member of the Management Board and CEO of IFU Info Forum Free Entrepreneurship, Lucerne |
| 2007 - 2014 | President of the Supervisory Commission VQF, Centre of Compentece for Compliance Services, Zug |
| Since 2008 | Owner and Partner of Brücker Attorneys-at-Law, Lucerne |
| Since 2013 | Member of the Management Board and CEO of PULSUS, association for socially responsible medicine, Lucerne |
| 2013 – 2014 | CEO ad interim of a Swiss wholesale company for medical and pharmaceutical products |