During February 2026, this developer enhanced the folio-org/mod-data-export repository by expanding unit test coverage across export, storage, and upload components. They focused on improving reliability and maintainability by validating critical paths and reducing regression risk, particularly in data export and file upload workflows. Using Java, JUnit, and Mockito, they applied test-driven development practices to implement and refine tests for entities such as JobProfileEntity and services like ErrorLogService. Their work included merging ten unit-test-focused pull requests, addressing code style, and collaborating across teams. This effort strengthened CI readiness and contributed to more robust, maintainable code without introducing new features.