| Titel | Zeitraum | Branche | Stellenbezeichnung |
|---|---|---|---|
| Platform for data enrichment of product data | 2013 - 2017 | E-Commerce | Consultant |
| Mini search engines | 2006 - 2023 | Service-Provider | Developer |
| Development and operation of internet search engines | 2006 - 2009 | Public | Scientific Assistant |
| Operation of customer systems and applications | 2005 - 2022 | Diverse | Administrator |
| Founding an internet service provider | 1999 - 2005 | Internet Service Provider, Startup | Managing Director |