Hergy Fongue
Lead developer at Finanz Informatik modernizing legacy COBOL banking mainframes.
Hergy Fongue builds cloud-native core components at Finanz Informatik. As a lead developer, he modernizes the central data warehouse for the German Sparkasse Finance Group, migrating it from monolithic mainframes to a decentralized architecture.
His work focuses on transitioning decades-old COBOL systems into modular Java services without disrupting daily banking operations for 50 million customers. Hergy explores practical ways to reverse-engineer legacy code, simplify data processing flows, and boost developer productivity.