During June 2025, Paulo refactored the build script for the biomejs/biome repository, focusing on improving maintainability and readability without altering core functionality. He enhanced the justfile by adjusting indentation and removing unnecessary blank lines, making the build process more approachable for new contributors and reducing cognitive overhead for the team. Paulo applied his skills in build scripting and code formatting, utilizing Shell scripting to ensure the changes were non-breaking and did not impact CI stability. While the scope was limited to a single feature, the work addressed long-term maintainability and onboarding efficiency, reflecting a thoughtful approach to engineering quality.