Wilke Stroman (CEO Germany)

Wilke Stroman (1980) has been in charge of online activities in Germany since June 2019. He founded the online portal sparhandy.de in 2000 as a sideline to his apprenticeship as a banker in the East Frisian North. After successfully completing his training, he first worked in the banking sector in London before moving his company to Cologne in 2005. There he developed the former start-up into the leading German telecommunications company. Wilke Stroman heads the business of mobilezone Germany since 1 January 2020. He is also Co-CEO of powwow.

Dieter Kossmeier (Managing Director Indirect Partners)

Dieter Kossmeier (1967) has been Co-Managing Director of mobilezone Deutschland GmbH since December 2020. Prior to his activities for the mobilezone Group, he was Head of New Business, Vectron Systems AG. Between 1997 and 2015, he held various positions at The Phone House Telecom GmbH (formerly Hutchison Telecom GmbH), most recently as Business Unit Manager New Business and IT. He has an education as a software developer and underwent various management trainings.

Daniel Blum (Director People & Legal)

Daniel Blum (1979) has been with sparhandy.de since 2010 where he built up the internal legal department. From 2016, he additionally took over the management of the HR department. Since 2021, Daniel Blum has been part of the management of mobilezone Germany and, as Director Legal & People and authorized signatory, is responsible for these areas for all companies of mobilezone Germany. Before joining mobilezone, Daniel Blum worked as a lawyer in national and international commercial law firms. 

Feyzi Demirel (Director Customer Experience & Operations)

Feyzi Demirel (1978) joined the management of mobilezone Deutschland GmbH in 2021 and is responsible for the operations areas Customer Service and Customer Relations. After studying business administration in Münster, he started his career at The Phone House before moving to Telefonica where he held various management positions, including as an authorized signatory and member of the management team at blau Mobilfunk GmbH. In 2015, he joined what is now powwow GmbH.

Mathias Sieg (Managing Director Digital & IT)

Mathias Sieg (1977) joined mobilezone Deutschland GmbH in April 2022 as Director Digital & IT. Mathias Sieg is a proven digital expert, founder of a performance marketing agency and entrepreneur and was Managing Director in a full-service internet agency after selling the agency. Before joining mobilezone, he was Managing Director of Resolution Media Germany, which is part of the Omnicom Media Group.

Sascha Hancke (Managing Director Commerce & Purchasing)

Sascha Hancke (1965) has many years of experience in the telecommunications and consumer electronics industry. After holding management positions at Deutsche Telekom AG and LG Electronics Deutschland GmbH, among others, he held purchasing and category management positions at Media-Saturn Deutschland GmbH for more than ten years. Most recently, as Category Group Head Smartphones & Services, he expanded the company's market share in the smartphone segment.

Jörg von der Halben (Managing Director Finance & Controlling)

Jörg von der Halben (1967) joined mobilezone Germany in February 2021. He has many years of experience in the management of commercial divisions, including in telecommunications companies. Through his activities, he has become familiar with owner-managed companies as well as corporate groups and companies from the private equity environment. Since March 2021, Jörg von der Halben has been part of the management team of mobilezone Germany as Senior Director Finance.