Dr. K. Halkiotis has joined Deutsche Telekom Group Technology in 2013 as Vice President in Mobile Access. He moved from Cosmote Greece (subsidiary of Deutsche Telekom Group) where he initially joined in 2002.

His primary function was to define the strategy, architecture, innovation and blueprints for Mobile Access Networks in Deutsche Telekom Group. As of the beginning of 2016 he was also responsible for the architecture of the fixed networks within Deutsche Telekom Group Technology. Since 2018 he took over the responsibility of Access & Home Networks in DT group defining the strategy, architecture and innovation for access and home Networks in Deutsche Telekom Group.

From 2020 -2022 he was leading the 5G solutions which pushed the 5G deployment with the introduction of Dynamic Spectrum Sharing, (DSS), 5GC and Network Slicing. From 2022 up to September 2023 he was leading the Non terrestrial Networks and 6G Tribes.
Currently he is leading the Access Technologies & Spectrum Tribe in DT AG and he is the Access Domain Lead in Technology Architecture and Strategy in Telekom Deutschland.

He is also Alternate Board Member for Deutsche Telekom in NGMN (Next Generation Mobile Networks).

He holds a B.Sc. in Physics, a B.Sc. at Electrical Engineering and Computing and also, he holds a Ph.D. in Electrical Engineering and Computing. He has more than twenty years working experience in Telecommunications.