Worked on the elixir-lang/elixir repository to enhance the parallel compiler’s performance profiling and debugging capabilities. Introduced timing instrumentation around the each_cycle function and wrapped deadlock detection in timing measurements, providing clearer insights into compilation performance and concurrency bottlenecks. This approach leveraged Elixir for compiler internals and concurrency management, with Markdown used to improve documentation clarity. Also addressed a documentation typo related to struct instantiation and field access, ensuring more accurate guidance for developers. All changes were tracked with commit-level traceability, supporting auditability and reproducibility. The work focused on improving developer productivity and reducing debugging time through targeted, measurable enhancements.