During May 2025, contributed to the Unity-Technologies/mono repository by enhancing the Mono JIT stack frame to include both IL offset and method token information. This targeted feature, implemented in C, improved the debugging and profiling experience by enabling more accurate call stack reconstruction and precise method mapping during JIT compilation. Leveraging skills in system programming, debugging, and performance optimization, the work focused on runtime observability, allowing developers to track method execution with greater detail. These changes supported faster diagnosis of performance issues and provided more reliable profiling data, ultimately streamlining the process of identifying and resolving runtime problems in Mono.