Worked on stabilizing and improving embedded systems reliability within the Zephyr RTOS ecosystem, focusing on bug fixes in C and Assembly Language. Addressed a macro naming conflict in the zephyrproject-rtos/zephyr-testing repository by isolating and renaming reg_read and reg_write macros for RISC-V builds, which improved CI reliability and reduced cross-driver conflicts. Additionally, contributed to the zephyrproject-rtos/zephyr repository by enhancing the SPI driver’s robustness, masking specific control fields to prevent malformed transactions and ensure consistent behavior across platforms. Demonstrated a methodical approach to kernel development, driver maintenance, and testing, emphasizing codebase stability and maintainability in embedded environments.