Contributed to the esphome/esphome repository by developing a public API for programmatic calibration resets in the BL0940 sensor integration, streamlining device calibration workflows and enabling automation. Addressed a missing header declaration to ensure the API was accessible and compilable, demonstrating attention to code completeness and maintainability. Later, focused on enhancing BLE communication reliability by implementing atomic log-line framing, which resolved partial write issues in the BLE ring buffer and improved data integrity during high-throughput transmissions. Work was delivered collaboratively and showcased proficiency in C++ programming, embedded systems, and hardware integration, with a focus on robust, maintainable solutions for device communication.