Stelios works in communications since 1994 and he has extensive experience in corporate communication, political relations, quality assessment surveys of public opinion and crisis management. In 2000, he was director of the office of Minister of Labour, Tassos Giannitsis. From 2001 to 2004 he was director of the political office of the Deputy Foreign Minister, T. Giannitsis.In 2003, during the Greek Presidency of the European Union, he oversaw the communication of the Ministry of Foreign Affairs. From 2004 to 2011 he worked in the group of Leo Burnett for clients as Johnnie Walker, OTE, Municipality of Athens, Delta Ice Cream, Nikas SA, OPAP, National Bank of Greece, IKEA, WIND and more. In 2011, he became the Chairman of the Board of The Newtons Laboratory SA.