Worked on performance and compatibility improvements across two major open-source projects. In aio-libs/aiohttp, developed a JSONBytesEncoder to serialize JSON directly to bytes, reducing encoding overhead and enabling lower-latency WebSocket and HTTP responses. This groundwork also prepared the codebase for integration with high-performance libraries such as orjson, focusing on asynchronous programming and efficient JSON handling in Python. In ollama/ollama, addressed GPU discovery reliability by implementing a JetPack CUDA Runner Fallback Mechanism in Go, enhancing Jetson device compatibility and deployment stability. The work demonstrated depth in backend development, system programming, and cross-platform support, with targeted, well-scoped contributions.