Worked on the espressif/arduino-esp32 repository to improve code quality and maintainability by addressing compiler warnings throughout the codebase. Focused on C++ code refactoring and debugging, the work involved silencing unused parameters, correcting type conversions for string lengths, and updating deprecated function usage across multiple libraries. These changes reduced build noise and prepared the code for future toolchain updates, ultimately lowering maintenance costs and stabilizing the embedded systems platform. By modernizing deprecated APIs and cleaning up warnings, the developer contributed to a cleaner, more maintainable codebase, leveraging expertise in C++ and embedded systems to enhance long-term project stability.