John Triantafyllakis

John Triantafyllakis is a Data Engineer at Cepal Hellas Financial Services S.A. since January 2023, specializing in AWS Glue job development and bug fixing using Pyspark. Previously, John held the position of Junior Data Engineer, where responsibilities included creating and modifying SSIS packages and writing SQL functions for data processing. John's experience also includes roles at IRI as a Junior Data Engineer, focusing on data collection and cleaning, and as a Data Analyst at OPAP, where analytics for the online sports betting sector were performed. Additionally, John interned as an Operations Analyst at FREENOW, working on an anti-fraud project. John holds a Master's degree in Business Analytics and a Bachelor’s degree in Marketing from Athens University of Economics and Business.