Since 1992, Frank Brech has held various management positions at mannesmann mobilfunk (later Vodafone) and was responsible for the acquisition and rollout of the GSM and UMTS network. At GA-Com and H&R Communication he was then responsible for the mobile communication service business as Head of Mobile Communication and managing director in Germany and Austria.
From May 2009, he expanded the telecommunications / broadband business within EnBW and was one of the founders of NetCom BW.
Since November 2019 he has been responsible for EnBW Full Kritis Service, which was spun off into the EnBW Cyber Security GmbH in May 2022.