Worked on the zalando-incubator/kubernetes-on-aws repository to enhance reliability and correctness for legacy Kubernetes clusters and StackSet-based traffic routing. Refactored cluster domain configuration logic to conditionally apply the main domain for legacy clusters, updating deployment manifests and test configurations to ensure accurate domain handling based on cluster provider. Upgraded the StackSet controller to address traffic switching issues when per-stack ingress or route groups are missing, reducing the risk of misrouting and deployment failures. Leveraged skills in Kubernetes, DevOps, and cloud infrastructure, utilizing YAML and Go to implement adaptive configuration and improve platform stability for users of legacy and StackSet workflows.