This document provides a summary of Sertac Yay's professional experience and qualifications. Over 9 years, he has held roles in payment systems, banking, product management, and business analysis. He has worked for several international companies in Germany and Turkey, including Grover, Wirecard, Garanti Payment Systems, BBVA, Delivery Hero, and Accenture. He holds a BSc in Mathematics and BA in Economics from Koc University in Istanbul.