M. Rosowski developed board support for the DFRobot Beetle ESP32-C3 within the nrfconnect/sdk-zephyr repository, enabling WiFi, BLE, and integrated battery management for IoT applications. Working primarily in C and YAML, Rosowski focused on embedded systems and device driver development to expand Zephyr RTOS hardware compatibility. The implementation included thorough validation against core Zephyr samples such as blinky, hello_world, and wifi shell, ensuring reliable integration and functionality. By delivering this feature, Rosowski addressed the need for broader ESP32-C3 support in Zephyr, streamlining onboarding for new projects and contributing depth in both hardware enablement and software validation.