Worked on release automation and cluster reliability for Kubernetes and Rancher’s RKE2 provider, focusing on backend development and DevOps practices. In the kubernetes/kubernetes repository, implemented release publishing rules for version 1.35 and updated etcd version compatibility, supporting new version skews and rotation handling using Go and YAML. In rancher/cluster-api-provider-rke2, enforced correct cluster topology by introducing service masking and updating cloud-init scripts for robust agent and server setup. Also performed maintenance by removing obsolete tests, ensuring a clean codebase. These efforts improved deployment reliability, upgrade stability, and multi-node cluster correctness, supporting faster and safer cloud infrastructure releases.