Case Study: Mizuho Bank rebuilds mission-critical FX settlement system with GeneXus

Rapid reconstruction of a Mission Critical foreign exchange Settlement System

Mizuho Bank, working through Mizuho Research & Technologies, needed to rebuild its mission-critical foreign exchange settlement system as SWIFT moved from MT to ISO 20022 and the existing 30-year-old PL/I-based architecture became difficult to maintain, costly to support, and dependent on scarce legacy skills. The bank wanted a modern, stable, open system that would also support greater insourcing and faster change.

GeneXus was selected as the low-code development platform to redesign and rebuild the system, automating application, database, screen, and testing development. GeneXus helped reduce manual coding, cut business logic coding to about 20% of traditional development, and enabled approximately 700 screens to be coded and unit tested in six months. The new Java-based system launched in April 2022 and has operated stably without reported issues, with Mizuho Bank also using GXtest and considering Jenkins for continuous integration and automated regression testing.

Mizuho

Masaharu Hagiwara

Manager of Department 2 of the IT Division