In February 2015 René Obermann joined Warburg Pincus, a leading private equity firm, as a Managing Director and Partner. He is Chairman of the Supervisory Board at 1&1 Internet SE and Strato AG, and a Board Member of ThyssenKrupp AG and Allianz Deutschland AG. René is also a member of the Editorial Board of DIE ZEIT. René worked as CEO of Ziggo BV in The Netherlands in 2014 until the merger with LibertyGlobal’s UPC in November. Prior to Ziggo, René worked at Deutsche Telekom Group from 1998 until 2013. After running the mobile division of DT (T-Mobile International), he was appointed as CEO of Deutsche Telekom AG in November 2006, where he remained until December 2013. René began his career with a business traineeship at BMW AG in Munich. Next, he founded his own business in Münster in 1986: ABC Telekom, a company marketing and distributing telecommunication equipment and providing technical services. After the acquisition of ABC Telekom by Hutchison Whampoa in 1991, René became Managing Partner of the resulting company: Hutchison Mobilfunk GmbH. In 1993 he was appointed as CEO of that company.