Justin worked on the deanlee/openpilot repository, focusing on enhancing the security and reliability of the LogReader component. He addressed a DNS resolution vulnerability by implementing logic in Python to ensure that hostnames only resolve to permitted local IP ranges before connections are established. This backend development effort reduced the risk of unauthorized access and DNS-based misrouting, directly improving the system’s resilience in production environments. Justin’s work demonstrated strong skills in network programming and security controls, with clear, traceable changes linked to issue tracking. The targeted fix reflected a thoughtful approach to safe-connection gating and production-grade code review practices.