Peter worked on overhauling blue-green deployment health checks for the superfly/flyctl and superfly/fly-go repositories, focusing on improving deployment reliability and health visibility. He consolidated and refactored health check logic, reintroduced service-level checks, and updated monitoring to ensure comprehensive coverage. In fly-go, Peter removed outdated compatibility checks, streamlining machine health assessments and aligning with newer library versions. His work emphasized maintainability and reduced legacy exposure, resulting in smoother rollouts and fewer incidents. Throughout the project, Peter applied his expertise in Go, backend development, and dependency management, demonstrating depth in health-check architecture and cross-repository change management within a DevOps context.