Raphael focused on reliability improvements for the derailed/cilium repository, addressing a critical issue in Envoy Proxy’s circuit-breaking integration. He delivered a targeted bug fix by normalizing service names, removing the port component to ensure accurate service discovery and consistent backend selection. This change reduced the risk of misrouting in Kubernetes-based service mesh environments, directly improving routing reliability. Working primarily with YAML and leveraging his expertise in Envoy Proxy and Kubernetes, Raphael maintained code quality through a focused, low-risk update. His clear documentation and commit messages enhanced traceability, reflecting a thoughtful and precise engineering approach during this period of work.