Strong Linux / virtualization / cloud skills — RHEL/Linux, OpenStack, VMs, containers (Podman/Docker/Kubernetes), networking, storage, identity, distributed systems, and high-performance/simulation workloads. Practical ATO/RMF expertise — Hands-on maintenance of government ATOs: RMF, NIST SP 800-53, STIGs, SSPs, POA&Ms, continuous monitoring, vulnerability management, change control, and authorization evidence.