During January 2026, Viet Nguyen contributed to the DataDog/cilium repository, focusing on enhancing networking reliability and deployment resilience. He addressed a circular dependency in the Darwin route stub by refactoring the Replace function to use the Go 'any' type, simplifying the codebase and resolving import cycles. Additionally, Viet improved BGP advertisement logic for Envoy-backed services by introducing a local proxy presence check and refining conditions to better support Gateway API and Ingress scenarios. His work demonstrated depth in backend development and network programming, leveraging Go and Kubernetes to deliver targeted fixes and features that improved service robustness and maintainability.