System Administrator – Linux/Windows & Security (Mid or Senior)

The System Administrator – Linux/Windows & Security role supports a large, distributed, mission-critical network environment, administering both Linux and Windows platforms while strengthening system security. The position involves troubleshooting complex infrastructure, managing patching and system hardening, and ensuring reliable operations across geographically distributed and air-gapped systems. This role requires collaboration with technical teams, supporting system upgrades, and contributing to maintaining resilient environments that support demanding mission requirements.