Olympia Markellou is a Civil Engineer - Economist, member of the TEE and the OEE. She holds a Master's degree in Business Administration - Total Quality Management (MBA-TQM), a Master's degree in Technical Projects Management and a Master's degree in Real Estate Investment and Development. Since 2002, she has worked at Attiko Metro S.A. as an Engineer and since 2012 as the company's Head of Management Systems. From 2019 to June 2023, she served as an associate of Kyriakos Pierrakakis at the Ministry of Digital Governance. Olympia Markellou is a lecturer at the Training Institute of the National Center for Public Administration and Local Government and has collaborated with many companies and organizations to provide specialized knowledge on management systems and control issues.