After studies in Electrical Engineering and Business Administration in Darmstadt, Dresden and Nagoya/Japan, Stefan started his professional career as a lecturer in Innovation- and Technology-Management at Berne University.

Following, as a Top Management Consultant with Roland Berger Strategy Consultants, he advised European High-Tech companies on Strategy, Organization, M&A/Corporate Finance and Restructuring.

Working as a Sales Manager with software-maker abaXX Technology (now part of Crealogix) he successfully lead sales teams serving blue-chip customers like German Railways, Loyalty Partners and BertelsmannSpringer and established partnerships with global technology players such as IBM or CSC.

Within Deutsche Telekom, Stefan successfully acted as Senior Vice President of Strategy, M&A, Subsidiary Management and as Vice President of Product Management, shaping DT's Internet Business and Product Portfolio with products such as classifieds, portals, online advertising, eMail, Online-Storage and Smartphone-Apps. 

Additionally, Stefan served as chairman and member of supervisory boards in Internet, Media and Software companies.

Stefan is a mentor at startupbootcamp, a Project Management Professional (certified bei PMI) and a Certified Scrum Master (CSM).