Stefan Siebenberg Email & Phone Number
VP Defense Industry T-Systems @ T-Systems International
5 free lookup(s).
No credit card required.
Stefan Siebenberg Location
- Hamburg, HH, DE
Stefan Siebenberg Work
- 2024 -now VP Defense Industry T-Systems @
- 2024 -2024 Director Operations Security - Defense Industry @
- 2019 -2024 AIDA IT Director @
- 2019 -2019 IT Director - Guest and Business Applications @
- 2017 -2019 Managing Director Technology, Finance and Business Development @ HQ-Patronen GmbH
- 2015 -2017 Managing Director B2C, IT, Finance, Procurement and HR @ HQ-Patronen GmbH
- 2014 -2015 Interim Manager Finance, IT, B2C (Online Marketing) @ HQ-Patronen GmbH
- 2013 -2014 Senior Consultant and Interim Manager @ RD & S Solution GmbH
- 2011 -2013 Managing Director MicronNexus – TUI Travel PLC – A and D @
- 2007 -2011 Managing Director MicronNexus – TUI Travel PLC – E-Commerce @
- 2001 -2007 Founder and Managing Director @ MicronNexus GmbH
- 1999 -2000 IT Consultant @ Self
- 1998 -1999 Senior IT Project Consultant @ Qiva/Thru Transport Systems Ltd.
- 1997 -1998 IT Consultant @ Qiva/Thru Transport Systems Ltd.
- 1997 -1998 IT Consultant @ Qiva/Thru Transport Systems Ltd.
- 1994 -1995 Data Analyst @
Stefan Siebenberg Education
- Universität Hamburg 2000-2003
- Hamburg University of Technology 1994-1997
- Heinrich-Heine Grammar School 1993
Stefan Siebenberg Skills
- B2B
- Business Travel
- Project Management
- Travel Management
- Online Advertising
- E-commerce
- Online Travel
- Digital Transformation
- Hotels
- Business Strategy
- Yield Management
- Marketing Strategy
- Revenue Analysis
- Leisure Travel
- Affiliate Marketing
- Pricing
- Leisure
- Online Marketing
- SEO
- Conversion Optimization
Stefan Siebenberg Summary
- Stefan Siebenberg, based in Hamburg, HH, DE, is currently a VP Defense Industry T-Systems at T-Systems International. Stefan Siebenberg brings experience from previous roles at T-Systems International, AIDA Cruises and HQ-Patronen GmbH. Stefan Siebenberg holds a 2000 - 2003 Universität Hamburg. With a robust skill set that includes B2B, Business Travel, Project Management, Travel Management, Online Advertising and more. Stefan Siebenberg has 3 emails and 2 mobile phone numbers on RocketReach.
5 free lookup(s).
No credit card required.
If you need more lookups,
subscriptions start at $34 USD/month.
Looking for a different Stefan Siebenberg?
Find contact details for 700 million professionals.
Top T-Systems International Employees
Andy Lesser
VP Digital Solutions
Bavaria, Germany
How It Works
Get a Free Account
Sign up for a free account. No credit card required. Up to 5 free lookups.
Search the #1 Contact Database
Get contact details of over 700M profiles across 60M companies - all with industry-leading accuracy. Sales and Recruiter users, try out our Email Finder Extension.
Use our AI-Powered Email Finder
Find business and personal emails and mobile phone numbers with exclusive coverage across niche job titles, industries, and more for unparalleled targeting. Also available via our Contact Data API.
G2 Crowd Trusted
300K+ Plugin Users
© 2026 RocketReach.co