Worked on the espressif/esptool repository to enhance reliability and stability across ESP32 variants by addressing a resource management issue in the espefuse utility. Implemented a targeted fix in Python to ensure data files are properly closed after reading, effectively eliminating file-handle leaks that could impact long-running processes and continuous integration environments. This change improved the robustness of embedded systems tooling by reducing the risk of resource exhaustion. Demonstrated skills in embedded systems, file I/O, and resource management, while following a patch-based workflow with clear commit messaging to support ongoing cross-variant compatibility and maintainability within the esptool codebase.