Mr. Sifnaios started his professional career at Mobil Oil Hellas in 1987 as a Strategic Planning analyst. He continued in several positions within Sales and Marketing reaching the post of Sales Manager for South & Western Greece. He was then transferred to Mobil Oil International in London and Madrid where he assumed posts in supply and trading. In 1997 he moved to BP International, in Brussels, to work on the European restructuring of the company. He returned in Greece as General Commercial Sales Director for BP Greece (2000 – 2002) to then resume his international career within BP’s European supply chain till 2007. From June 2007 to the end of 2021, he worked in Copelouzos Group initially as New Projects Manager, gas sales Commercial Manager and then as Group Energy Director in the sector of Gas. He also managed the development of the Alexandroupolis LNG Terminal Project to its Final Investment Decision.
Since January 2022, when FID was taken on the Alexandroupolis LNG Project, he was appointed Managing Director of Gastrade, the owner and operator of the Terminal.

Mr. Sifnaios graduated from the school of Mathematics and Applied Sciences of the University of Athens having completed a special program on studies, methods and applications of Linear Programming and Network Flows. He went on to work as a research and faculty assistant at Columbia University, New York, U.S. where he received a Master of Science (MSc) in Operational Research and Applied Business Administration.

Mr. Sifnaios was born in Athens in 1960 and originates from the island of Lesvos. He speaks Greek, English, French and Spanish.