Worked on reliability and compliance improvements across the zephyrproject-rtos/zephyr and Zephyr4Microchip/zephyr repositories, focusing on bug fixes in embedded systems. Addressed a time-domain mismatch in PTP foreign clock cleanup by introducing local monotonic uptime tracking and regression tests, enhancing time synchronization stability. Improved Devicetree compliance by relocating non-memory-mapped nodes to the root level, reducing compile-time warnings. Fixed boundary read alignment issues in the NRF_QSPI_NOR driver to prevent out-of-bounds access. Utilized C and device tree source (dts) languages, applying skills in driver development, network programming, and unit testing to deliver targeted, maintainable solutions within the Zephyr ecosystem.