Arnau Pérez contributed to the IT-Academy-BCN/ita-challenges-frontend repository by updating the contributors.md file to include his name, ensuring accurate attribution for January milestones. He used Markdown for documentation and leveraged Git for version control, linking the update to a specific commit for traceability. This work improved the accuracy and transparency of project documentation, supporting better onboarding and collaboration among contributors. By maintaining up-to-date records of team involvement, Arnau addressed governance and recognition needs within the project. The scope of work was focused and precise, demonstrating attention to detail in documentation workflows rather than broader feature development or bug fixing.