System Administrator - DoD Cybersecurity

SimVentions, Inc. seeks a System Administrator to support Defense & Aerospace IT and cybersecurity operations. You will manage Windows/Linux servers, networks, and cloud services; harden and patch systems; and ensure compliance with DoD cybersecurity and STIG requirements. Partner with engineers and cybersecurity analysts to maintain high availability and security for mission-critical environments. Ideal candidates bring strong troubleshooting skills, scripting/automation experience, and a passion for supporting national defense in a collaborative, growth-focused culture.