Developed and integrated a watchdog timer system for the stanford-ssi/samwise-flight-software repository, focusing on enhancing fault tolerance and system reliability in embedded flight software. The work involved creating a new watchdog driver and a dedicated task in C, both initialized at system startup and periodically fed to ensure continuous system liveness. Integration with the build process was achieved by updating CMakeLists, supporting consistent compilation and deployment through CI/CD workflows. This addition addresses the risk of software hangs during autonomous operation, improving overall system stability and predictability. The solution leverages C programming, embedded systems expertise, and system programming best practices.