Worked on enhancing observability and performance monitoring in livekit/server-sdk-go by developing Subscriber PeerConnection interceptors for improved stats instrumentation. The approach enabled the seamless integration of custom interceptors alongside default ones, allowing for more granular analytics and monitoring of data streams. This involved updating core backend components, such as engine.go, to ensure interceptors were properly wired for comprehensive stats collection. The work demonstrated a strong command of Go, WebRTC, and backend development practices, with clear and maintainable code contributions. Throughout the project, the focus remained on increasing the visibility of system performance without introducing regressions or disrupting existing workflows.