As the CEO of Germany ’ s largest telecom company , Timotheus Höttges has been overseeing operations in Europe and the US - where Deutsche Telekom is the majority shareholder of T-Mobile - since 2014 . Prior to joining Deutsche Telekom in 2000 , Höttges received a degree in Business from the University of Cologne and was instrumental to the VIAG AG and VEBA AG merger which formed E . on AG and was completed in 2000 .

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