Jordi focused on enhancing quality assurance and testing processes for the 0xPolygonHermez/zisk repository during June 2025. He consolidated internal test-related commits, introducing a placeholder test and refining formatting to improve test consistency and code maintainability. Working primarily in Rust and leveraging his software development expertise, Jordi addressed issues with flaky tests by standardizing test structures and ensuring reliable execution. Although no new user-facing features were released, his efforts laid the groundwork for future automated testing improvements. The work emphasized stability and maintainability, resulting in a more robust test suite and a cleaner codebase for ongoing development.