Giannis Demertzis

Giannis Demertzis currently serves as a Senior Payments Optimization Analyst at Etraveli Group, where responsibilities have included optimizing payment processes since December 2021, following roles as Payments Optimization Analyst and Junior Payments Analyst. Previous experience includes working as a Guest Service Agent - Night Auditor at The Westin Resort Costa Navarino, handling customer accounts, bookkeeping, and reporting. Additionally, Giannis worked as a Guest Service Agent at Vedema, a Luxury Collection Resort, focusing on sales and financial report management. Earlier in the career, a position as a Business Analyst at ICAP Group involved data collection and processing. Giannis is pursuing an MSc in Business Analytics at Athens University of Economics and Business, expected to complete in May 2025.