Over a two-month period, contributed to the hamc/fatec20251 repository by building foundational features in JavaScript and Node.js. Initially established student profile scaffolding, introducing placeholder data structures and hooks to streamline future student-centric development. Later, delivered a product catalog management microservice using Express.js, implementing a GET endpoint for real-time product availability checks backed by a mock data source. This approach enabled decoupled catalog management and facilitated independent scaling for downstream integrations. Throughout, maintained clear documentation and consistent commit messaging in Markdown, focusing on creating extensible, testable codebases that support rapid feature delivery and future enhancements without addressing bug fixes.