Manage and harden security configurations for Kubernetes Engine environments, including: Cluster and node security settings, RBAC, pod security controls, network policies, admission controls, and runtime security, Image vulnerability scanning, container supply-chain controls, patch cadence and version lifecycle management for clusters/nodes and supporting components. Work cross-functionally with Information Security Operations and Infrastructure/DevOps teams, to administer and optimize security posture across multi-cloud (GCP/AWS) infrastructure, including native security services, IAM, logging, and threat detection.