Fred Perim focused on improving metadata validation reliability in the LerianStudio/midaz repository, addressing data integrity and maintainability concerns. He refactored the existing validation logic in Go to eliminate redundant checks, consolidating them into a more streamlined approach. To ensure robustness, Fred implemented comprehensive end-to-end integration tests that validate transaction metadata across core backend flows. This work not only reduced code duplication but also enhanced test coverage, making the validation process more reliable and easier to maintain. His efforts centered on backend development and testing, resulting in measurable improvements to the system’s reliability without introducing new features during the period.