Classified Systems Administrator

🇺🇸 Arlington, Virginia
$1K - $1K Annual
Posted 1 day ago
Expires December 20, 2026

STR is seeking a Classified Systems Administrator to join our Information Technology team in Arlington, VA. This role is integral to supporting the infrastructure behind our cutting-edge defense research, ensuring the secure and reliable operation of our systems. The ideal candidate will have an active Top Secret/SCI clearance with polygraph and a strong background in system administration.

As a Systems Administrator, you will collaborate with senior administrators, Information System Security Officers (ISSO), and other team members to implement, deploy, and maintain Linux (Red Hat, Ubuntu) and Windows operating systems in both traditional and virtualized environments. Your responsibilities will include configuring and maintaining NAS storage, networking, firewalls, and directory services such as MS Active Directory management and Group Policy administration. Additionally, you will perform performance monitoring, analyze results, enhance system performance, and automate processes using PowerShell scripting and other technologies. Daily support tasks will involve systems maintenance, problem resolution, and project assistance, along with creating and maintaining installation and configuration Standard Operating Procedures (SOPs).

Candidates should possess a Bachelor’s degree with at least five years of experience, a Master’s degree with at least three years of experience, or a PhD or equivalent experience. Required skills include Linux Administration (Red Hat, Ubuntu), Windows OS Administration, and familiarity with DoD security and technical guidelines. Desired qualifications encompass experience with enterprise virtualization tools, multi-factor authentication, public key infrastructure, web servers, Active Directory including Group Policy, LDAP backend, and replication, as well as effective utilization of Security Technical Implementation Guidelines (STIGs) and Security Content Automation Protocol (SCAP) content and tools. Knowledge of Host Based Security System (HBSS) implementation and maintenance, Assured Compliance Assessment Solution (ACAS) support, and current understanding of DoD Ports, Protocols, and Services (PPS) are also advantageous.

The compensation for this full-time position ranges from $105,000 to $125,000 annually, based on factors such as experience, education, training, key skills, security clearances, and prevailing market conditions. STR offers a collaborative learning environment that supports deep technical understanding and recognizes the contributions and achievements of all team members. Our work is challenging, and we go home at night knowing that we pushed the envelope of technology and made the world safer.

STR is a growing technology company with locations near Boston, MA, Arlington, VA, near Dayton, OH, Melbourne, FL, Carlsbad, CA, Atlanta, GA, and Denver, CO. We specialize in advanced research and development for defense, intelligence, and national security in cyber, next-generation sensors, radar, sonar, communications, electronic warfare, and artificial intelligence algorithms and analytics. Our people, culture, and attitude, along with their unique set of skills, experiences, and perspectives, put us on a trajectory to change the world. We can't do it alone, though—we need fellow trailblazers. If you are one, join our team and help to keep our society safe!

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