Worked on the jdx/mise repository to address a critical reliability issue in subprocess management by preventing infinite recursion caused by mis-inherited PATH shims. Applied Rust programming and bash scripting skills to develop a shared helper that filters shims from the PATH, ensuring subprocesses like credential and git commands do not trigger fork bombs. Integrated this solution into multiple call sites and reinforced the fix with comprehensive end-to-end and manual testing. The approach improved subprocess reliability and test coverage, with validation through cargo check and CI preparation. The work demonstrated depth in system programming and careful attention to robust, maintainable code.