Hellenic Telecommunications Organization SA
Christos Filis has been with OTE Group of Companies since July 2006, currently serving as the Head of Customer Support & Operations Excellence at Cosmote Payments S.A., where a strategic focus has been placed on enhancing customer lifetime value and profitability in a regulated fintech environment. Key achievements include improving customer satisfaction and loyalty through redesigned customer journeys and data-driven strategies, launching a mobile wallet MVP that garnered 90K downloads in its first quarter, and leading digital transformation projects. Christos has held various roles within the company, including Product Owner for digital wallet services, Senior Manager of KPI’s & Performance Monitoring, and Section Manager of B2B Technical Support & Implementation. Prior experience includes a role at the National Bank of Greece and IT support at Vrattimos Doulos. Christos holds an MSc in Technoeconomic Management & Security of Digital Systems from the University of Piraeus and a Bachelor of Computer Science from the University of West Attica.
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