Worked on u-root/u-root and tianocore/edk2 repositories, focusing on system programming and firmware development using Go and C. Delivered PEZ image support for ARM64 in u-root/u-root, enabling extraction of raw Linux images from PE-formatted vmlinuz files to streamline boot workflows. Enhanced test reliability by integrating BusReader validation within VM-based CI environments. In tianocore/edk2, addressed a critical NULL pointer dereference in the UEFI CPU MP initialization path, improving boot stability for uniprocessor guests and aligning with API specifications. Emphasized robust error handling, maintainability, and cross-environment compatibility throughout the development and testing process across both projects.