| since 2018 |
Vice-president of the Constitutional Court |
| 2015 - 2018 |
Judge of the Constitutional Court |
| 2012 - 2014 |
President of the National Commission on Taxation ("Landessteuerkommission") |
| 2010 - 2012 |
President of the National Commission on Real Property Transactions ("Landesgrundverkehrskommission") |
| 2005 - 2012 |
President of the Appeals Commission on Administrative Matters |