Worked on hardening the virtio_console path in Zephyr by addressing a race condition that affected data reception reliability, particularly when ports were added after reception had already begun. Applied a targeted patch to the zephyrproject-rtos/zephyr repository, ensuring that receive setup is correctly initialized whenever the receive interrupt is enabled and the port’s receive process has not started. This change improved the stability of console I/O in virtualization scenarios, reducing the risk of data loss or stalls. Demonstrated strong skills in C programming, driver development, and embedded systems, with a focus on concurrency debugging and kernel-space driver lifecycle management.