Marisa leads the internal audit activities and serves as member of the Information Security Committee of OPAP Group. Previously, she worked as Chief Internal Auditor at the Hellenic Financial Stability Fund, as Associate Director of the Internal Audit and Inspections Unit of the National Bank of Greece (NBG) and as Enterprise Risk & Assurance Services Senior Manager at Deloitte. Serves as advisor to the Board of the Hellenic BlockChain Hub, as VISA innovation program mentor and judge of start-ups in numerous innovation hackathons. Participated as Board member of the local chapter of ISACA, and as a member of the working group of the Hellenic Corporate Governance Council that revised the governance code of listed companies on the Athens Stock Exchange. Occasionally taught at the National and Kapodistrian University of Athens, the Athens University of Economics, the American College of Greece, as well as the Central Bank of Greece, the Central Bank of Egypt, and spoke at professional conferences.

She holds a postgraduate studies certificate on Blockchain Strategy (Oxford University, Said Business School), an MSc in Information Management (University of Sheffield, UK) and a Bachelor’s degree in Business Administration (Deree - The American College of Greece) and several professional certifications (ISO 27001 LA, CIA, CISA, CCO, CAML, CRMA).