Professor Konstantinos Masselos is the BEREC Chair for 2023 and the president of the Hellenic Telecommunications and Post Commission (EETT, Greece). Professor Masselos takes the position of the president of EETT since 2018. He has been a part of the BEREC Mini-Board, while serving as a Vice-Chair in 2019. In 2006, professor Masselos joined University of Peloponnese, where he is currently a Professor in Computing Systems Design in the Department of Informatics and Telecommunications. He served as the Rector of the above university during 2012-2017. Before that, from 2005 to 2008, Konstantinos Masselos was the Lecturer in digital systems at the Imperial College London. Also from 2010 to 2016, he served as the Honorary Lecturer in the Department of Electrical and Electronic Engineering, at the Imperial College London. From 2001 to 2004, he was a part of the Intracom Telecom SA team in Greece.