Konstantinos Zeakis is a Senior Data Engineering Consultant at D ONE, with a focus on data migration from Microsoft Azure to Palantir Foundry and the conversion of SQL pipelines to PySpark since December 2022. Previously, Konstantinos held the position of Data Engineering Consultant, leading cross-functional teams to manage end-to-end data ingestion processes from various source systems, including databases and APIs. Prior experience includes serving as the Manager of Global MDM at Pfizer, where responsibilities included data quality reporting in Tableau, data stewardship, and the integration of multiple data providers. Konstantinos also worked at Accenture as a Software Engineer, developing a Software Billing System and aligning it with customer requirements. Prior military service as a Paratrooper in the Hellenic Army Special Forces and management experience at Coffee Island further contribute to a diverse skill set. Konstantinos holds an Integrated Master's degree in Electrical and Computer Engineering from the National Technical University of Athens.