| 2012 - today | Quality Manager, IVU Traffic Technologies AG |
| 2008 - 2012 | Technical Project Manager Ticketing, IVU Traffic Technologies AG |
| 2008 - 2012 | Product Manager Ticketing/eTicketing, IVU Traffic Technologies AG |
| 2005 - 2008 | Team Leader Software Development Ticketing, IVU Traffic Technologies AG |
| 2000 - 2005 | Technical Project Manager Ticket Vending Machines, IVU Traffic Technologies AG |
| 1997 - 2000 | Software developer for on-board computer for public transport, IVU Traffic Technologies AG |
| 1989 - 1997 | Hardware and software developer for tool monitoring systems, Prometec GmbH |
| 1989 | Graduate engineer in electrical and communication engineering, FH Aachen |
