Sara Lin contributed to the facebook/OpenBIC repository, focusing on embedded firmware and device driver development using C and Device Tree. Over six months, she delivered features and fixes that improved system reliability, including robust I3C protocol handling, enhanced memory management, and stable hardware interactions. Her work addressed issues such as error-prone event signaling, ADC measurement reliability, and CXL EID thread initialization, often by refining kernel-level logic and optimizing resource usage. By implementing targeted debugging, system monitoring, and version control practices, Sara ensured smoother firmware upgrades and reduced downtime, demonstrating depth in debugging, hardware configuration, and embedded systems engineering.