STR
Classified Systems Administrator
$105K–$125K
Arlington, VA +1 · Full-time · Posted Sep 18, 2026
- Location
- Arlington, VA
Arlington, Virginia, United States - Experience
- Bachelor’s degree + 5 years of experience or Master’s degree + 3 years of experience; PhD or equivalent experience.
- Education
- Bachelor’s degree, Master’s degree, or PhD; or equivalent experience.
About the job
Administers and supports Linux and Windows systems, storage, networking, security services, and production and development environments in classified settings.
What you'll do
- Configure and maintain NAS storage, networking, firewalls, and directory services, including Active Directory and Group Policy.
- Monitor and improve system performance; automate processes using PowerShell and other technologies.
- Provide daily system support, maintenance, troubleshooting, project support, and after-hours maintenance and patching as needed.
What they ask for
- Active Top Secret/SCI with polygraph clearance; U.S. citizenship is required by the U.S. Government.
- Linux administration (Red Hat, Ubuntu).
- Windows OS administration.
- Bachelor’s degree + 5 years of experience, Master’s degree + 3 years of experience, or PhD or equivalent experience.
Nice to have
- Enterprise virtualization tools.
- Multi-Factor Authentication, Public Key Infrastructure, web servers, Active Directory, STIGs/SCAP, HBSS, ACAS, or DoD Ports, Protocols, and Services knowledge.
Pay
USD $105,000 to $125,000 base salary
Tools
Linux, Red Hat, Ubuntu, Windows, PowerShell, MS Active Directory, Group Policy, LDAP
Model-written summary · the original posting is authoritative