Mr. Mazarakis has about 30 years of professional experience, chiefly in senior management positions in Greece and abroad. Before joining OTE Group, in July 2012, as OTE Group Chief Financial Officer, he was Group Chief Financial Officer (CFO) of the National Bank of Greece, and from 2008 until 2010 Group Chief Financial Officer (CFO) and Member of the Group Executive Committee of TITAN Group. Mr. Mazarakis served in various executive positions in Vodafone Group: Group Finance Director and BoD Member in Greece (1999-2006), CEO in Hungary (2006-2007), Chief Operating Officer and BoD Vice-Chairman (2007-2008). He held the position of Finance Director and Member of the BoD at Georgia Pacific-Delica in Greece (1997-1999), while prior to that, he worked as Financial Analysis Manager at Procter & Gamble, first in Athens and then as Financial Analysis Group Manager at the European Headquarters in Brussels, Belgium. Mr Mazarakis holds a Bachelor's degree in Business Administration from the University of Piraeus (with distinction) and an MBA from the Fisher College of Business at The Ohio State University (Wielder Scholar), where he held the post of Teaching Assistant in Finance. He has been ranked among the 30 most distinguished Finance Managers of Europe under the age of 40 (CFO Europe magazine, 2002).