Pedro focused on backend stability for the Immpression-Dev-Team/backend repository, addressing a critical connectivity issue between the frontend and backend. He updated the server’s CORS configuration in Node.js and Express.js, expanding the allowlist to include https://immpression.art. This change restored reliable cross-origin communication, resolving persistent CORS errors and enabling seamless interactions for users on the main domain. Pedro’s approach involved careful server configuration, validation of policy changes, and clear documentation through traceable commits. While the work centered on a single bug fix rather than new features, it demonstrated depth in backend development and effective cross-team coordination to improve system reliability.