Richard Tim developed real-time collaboration features for live classes in the Examguide repository, focusing on enabling file upload and interactive participation during sessions. He implemented socket-based communication using Node.js, Express.js, and Socket.io, allowing users to share files and collaborate seamlessly in real time. This work established an end-to-end workflow for live class interactions, validating the technical stack’s ability to handle concurrent users and file transfers efficiently. By integrating these capabilities, Richard laid the foundation for scalable classroom experiences, directly addressing the need for enhanced engagement and reliability in live educational environments. The work demonstrated solid full stack engineering depth.