I led the frontend architecture and guided the team to recover a project that was 4 months behind schedule, implementing best practices and optimizing the development workflow. I designed the scheduler module, which handled massive datasets (~400,000 events) across multiple TV channels and days. The challenge required horizontal and vertical windowing, nested block rendering, and real-time drag-and-drop for multiple users, while enforcing licensing rules, content availability, and age restrictions. My architecture ensured high performance, collaboration without conflicts, and a reliable client-server interaction using Suspense and Error Boundaries. The result was a fast, robust platform that delivered on time and transformed the way the team approached complex UI problems.