Efstratios Panagiotis Thomadakis holds the position of Chief Financial Officer of Viohalco SA and Chief Financial Officer at Sidenor Holdings SA (a subsidiary of Viohalco SA).

He is also on the board of Sovel SA and Sidenor Steel Industry SA.

In his past career he was Chief Financial Officer & Executive Director at Cenergy Holdings SA.

He received an undergraduate degree and an MBA from the University of Piraeus.