George Mavrotas was an international water polo player (1984-2000) with 511 caps, participation in 5 Olympic Games, captain of the national team from 1995 to 2000 and member of the world selection in 1999. Concurrently with his athletic career, he attended the School of Chemical Engineering in the National Technical University of Athens (NTUA). He received his PhD diploma in 2000 with expertise in Operational Research and today he is an Associate Professor in NTUA with more than 65 scientific publications (Scopus).
From 2003 to 2010 he was member of the Greek Antidoping Organization. In the period 2015-2019 he was member of the Hellenic Parliament with the reformist party “Potami”. In the period 2016-2019 he was also member of the Parliamentary Assembly of Council of Europe and from 2018 chairman of the Sub-Committee of Education Youth and Sport. In July 2019, he was designated as Secretary General of Sport in the Ministry of Culture and Sport, and from 2020 he is Chairman in the National Platform for Sport Integrity (National Platform according to article 13 of the Macolin Convention). He has been the Chair of the Follow Up Committee of the Macolin Convention since June 2021.