Jan Lange
Brief profile: Jan Lange, since April 2025 Managing Director & Chief Executive Officer of TelemaxX Telekommunikation GmbH in Karlsruhe.
- Study of Economics, Bochum
- Diploma in Economics
- Harvard Business School Alumnus
Previous career stages:
- CEO DB broadband GmbH, Frankfurt am Main
- Managing Director 1&1 Versatel GmbH, Düsseldorf
- Member of the Executive Board Colt Technology Services GmbH, Frankfurt am Main
- Senior Vice President T-Mobile Deutschland GmbH, Bonn
Vitus Greifenegger
Brief profile: Vitus Greifenegger, since April 2025 Chief Commercial Officer of TelemaxX Telekommunikation GmbH in Karlsruhe.
- Studies in Commercial Information Technology, München
- Diploma in computer science
Previous career stages:
- Director Group Product Management, VX Fiber GmbH, Essen
- Director Global Partner Management, Grass Valley, Düsseldorf
- VP Sales Steering, 1&1 Versatel GmbH, Düsseldorf
- Head of Go-to-Market, Vodafone GmbH, Düsseldorf
Dominique Walter
Brief profile: Dominique Walter, since September 2025 Chief Technology Officer of TelemaxX Telekommunikation GmbH in Karlsruhe.
- Certified IT Business Manager
Excerpt of previous professional positions:
- Area Lead Infrastructure & Authorized Signatory, Universal Investment Company, Frankfurt
- Head of Line of Business CrossX, Datacenter & Compliance, Adesso as a Service, Dortmund
- Director Cloud Service & Solutions, Makro Factory, Karlsruhe
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