DTSE is the internal service provider for the Deutsche Telekom Group. The public often confuses the company with the telecommunication service provider T-Mobile, which is one of DTSE’s customers. Since 2016, almost 140 employees in Brno have been managing top projects in accounting, finance, purchasing, strategy and business development. The headquarter of the group is in Bonn, Germany and the company has branches in Germany, Romania, Slovakia and the Czech Republic.