Worked on backend and full stack features across MCDReforged/PluginCatalogue and UNIkeEN/SJMCL, focusing on scalable architecture and user-facing controls. For PluginCatalogue, established integration groundwork with a new Java-based mcsm_controller, enabling future interactions with external services, and developed a command block handler to streamline plugin command processing. On UNIkeEN/SJMCL, delivered a React and TypeScript-powered toggle system for the Discover page, allowing users to enable or disable individual data sources, with persistent state and dynamic UI updates. The work emphasized maintainable code, extensibility, and user customization, with no reported defects and a focus on robust backend and frontend development practices.