Managing Team

Sotirios Nikas- PRESIDENT OF THE BOD & CHIEF EXECUTIVE OFFICER

Mr. Sotirios Nikas is the President of the Board of Directors and Chief Executive Officer (CEO) of the Hellenic Gas Transmission System Operator (DESFA) SA. He has graduated from the Aristotle University of Thessaloniki with a BSc in Geomatics Engineering (Dipl. Eng.) and has a demonstrated working experience of over 25 years in the oil and gas industry worldwide, specializing in EPC projects, working for companies, such as UniversalPegasus International, Interpipeline, Plains Midstream, Gibsons Energy, DEPA and DESFA.

Mr. Nikas is both a member of the Technical Chamber of Greece (TEE) and the Association of Professional Engineers and Geoscientists of Alberta (APEGA).

His mother tongue is Greek; he is fluent in English and speaks, also, German.

Dimitrios Karodmateas- DIVISION DIRECTOR FOR STRATEGY & DEVELOPMENT & CHIEF FINANCIAL OFFICER (CFO)

Dimitrios Karodmateas is the Head of the Strategy & Development Division and of the Financial Services Division of the Hellenic Gas Transmission System Operator (DESFA) S.A. He is a Chemical engineer, graduate of the National Technical University of Athens, with postgraduate studies in environmental control at the University of Manchester (M.Sc.) and in Business Administration at the Hellenic Management Association. He has 6 years’ experience in process engineering and design of the energy sector. Also, he has 26 years of experience in strategic planning, technical and economic feasibility studies of new projects, gas network simulation studies, energy market studies, financing studies, formulation of business plans, contract negotiation, European and national regulation including development of network codes and development of tariff regulation and tariff reviews, development of financial information systems, as well as in the management of projects implementation and the management of personnel, first at the Public Gas Corporation of Greece (DEPA) S.A. and then at DESFA S.A.

He has served as representative of Greece for the negotiation of the first and second gas directives and for the Trans-European Energy Networks Program. Moreover, he has served as executive Chairman of the Board of the Management Organization Unit (M.O.U.) S.A. for 3 years. He has been elected member of the Management Board of the European Network of Transmission System Operators for Gas (ENTSOG) for 4,5 years and of the Management Board of Gas Infrastructure Europe (GIE) for 2 years. Since June 2016, he is elected member of the Executive Committee of Gas Transmission Europe (GTE).

Nikos Katsis - OPERATION DIVISION DIRECTOR

Nikos Katsis is the Division Director for Operations of the Hellenic Gas Transmission System Operator (DESFA) S.A. He has graduated from the Polytechnic School of Patras University with a Diploma in Chemical Engineering and holds an MSc in Marketing of Chemical products from the University of Athens. He has a demonstrated working experience of over 24 years in the gas and chemical industry in Greece.

Nikos Katsis is a member of the Technical Chamber of Greece (TEE). His mother tongue is Greek; he is fluent in English and speaks, also, German.

Sotirios Bravos- COMMERCIAL DIVISION DIRECTOR

Mr. Sotirios Bravos is the Commercial Division Director of the Hellenic Gas Transmission System Operator (DESFA) SA. He has graduated from the Aristotelion University of Thessaloniki with a Diploma in Electrical Engineering and has a demonstrated working experience of over 24 years in the gas industry in Greece. 

Mr. Bravos is a member of the Technical Chamber of Greece (TEE).
His mother tongue is Greek and he is fluent in English.

Ioannis Chomatas- PROJECT MANAGEMENT DIVISION DIRECTOR

Mr. Ioannis Chomatas is the Division Director for Project’s Management Division of the Hellenic Gas Transmission System Operator (DESFA) SA. He has graduated from the Polytechnic School of the University of Patras with a Diploma and an MSc in Mechanical Engineering and has a demonstrated working experience of 30 years in the oil and gas industry. 
Mr Chomatas is a member of the Technical Chamber of Greece and the Greek Society of Mechanical Engineers (ΠΣΔΜ-Η).
His mother tongue is Greek; he is fluent in English.

Petros Theodorakis- ADMINISTRATIVE SERVICES DIVISION DIRECTOR & HEAD OF PUBLIC RELATIONS & COMMUNICATIONS

Mr. Petros Theodorakis is the Division Director for Administrative Services and the Director for Public Relations and Communication of the Hellenic Gas Transmission System Operator (DESFA) SA. He has graduated from the Technical University of Athens with a Diploma in Electrical Engineering and from Athens University of Economics and Business with an MBA and has a demonstrated working experience of over 32 years in the gas industry, information and communications technology, cybersecurity, sewage industry, industrial automation and software development in Greece. 
Mr. Theodorakis is a member of the Technical Chamber of Greece (TEE), the Institute of Electrical & Electronic Engineers (ΙΕΕΕ) and the Organization Committee of the Hellenic CIO Forum.
His mother tongue is Greek; he is fluent in English and German.

Sophia Michelaki- LEGAL AFFAIRS DIVISION DIRECTOR

Mrs. Sophia Michelaki, lawyer, is the Head of DESFA’s Legal Division as of DESFA’s establishment in 2007 and before that she served as Deputy head of DEPA’s department (as of 2005). She graduated from the National and Kapodistrian University of Athens (Department of Law) and holds a post graduate degree from ULB, (License Special European Law). 
Mrs. Michelaki is a member of the Athens Bar Association. Her native language is Greek and has a full professional competence in English and French. She also has a limited professional competence in German and Italian.

Georgios Pribas- DEPARTMENT MANAGER OF INTERNAL AUDIT UNIT

Mr. Georgios Pribas is the Department Manager of Internal Audit Unit and Data Protection officer (DPO) of the Hellenic Gas Transmission System Operator (DESFA) SA. He has graduated from the National and Kapodistrian University of Athens with a Diploma in Physics and has a demonstrated working experience of over 25 years in the oil and gas industry in Greece. 

Mr. Pribas is a member of the Institute of Internal Auditors Greece. His mother tongue is Greek and he also speaks English.

Ioannidis Serafeim- COORDINATING DEPARTMENT MANAGER OF QUALITY & SAFETY

Mr. Serafeim Ioannidis is oordinator Director of Q.SH.S.E of the Hellenic Gas Transmission System Operator (DESFA) SA. He holds a Degree from the Department of Physics of the University of Patras and has a demonstrated working experience of over 24 years in the oil and gas industry in Greece. 
Mr. Ioannidis is an assessor of the Hellenic Accreditation System, responsible PE-pipeline of International Institute of Welding and Lead Auditor for Q.H.S.E ISO management systems. 
His mother tongue is Greek; he is fluent in English.