STR Logo

STR

Classified Systems Administrator

Posted 28 Days Ago
Be an Early Applicant
Easy Apply
In-Office
Arlington, VA
105K-125K Annually
Senior level
Easy Apply
In-Office
Arlington, VA
105K-125K Annually
Senior level
Administer classified Linux and Windows environments, including storage, networking, firewalls, Active Directory, Group Policy, virtualization, monitoring, automation, maintenance, patching, and troubleshooting. Develop SOPs, support production and development systems, follow DoD security guidelines, and provide after-hours maintenance support. The role requires an active Top Secret/SCI with polygraph clearance and on-site work in Arlington, Virginia.
The summary above was generated by AI

STR is hiring a Systems Administrator with an Top Secret/SCI with polygraph clearance. Help power the infrastructure behind cutting-edge defense research.

At STR, our Information Technology team plays a critical role in enabling the research and development that supports our national security mission. The team brings together experts across Enterprise IT, Classified IT, and Cybersecurity to build and maintain the secure, reliable infrastructure that powers our organization.

Our Enterprise IT team ensures the performance and availability of the systems that support day-to-day operations, while our Classified IT team manages highly secure environments that protect sensitive government information. Working alongside them, our Cybersecurity team proactively defends our networks and systems against evolving threats. Together, these teams provide the technology foundation that enables STR’s engineers and researchers to develop innovative solutions for national defense.

The Role:

We are seeking a Systems Administrator with an active Secret or Top Secret clearance to support our senior administrators in implementing, deploying, and maintaining Linux (Red Hat, Ubuntu) and Windows operating systems in traditional and virtualized environments across a variety of hardware solutions.

If you enjoy solving complex infrastructure challenges, improving system reliability, and working in a mission-driven environment, we’d love to hear from you. Please note: this position is based in Arlington, VA only (no other sites, no remote).

What you will Do:

  • Professionally support senior administrators, Information System Security Officers (ISSO), management, researchers and others supporting the customers
  • Configure and maintain NAS Storage, Networking, Firewall, and Directory Services such as MS Active Directory management and Group Policy administration
  • Perform performance monitoring, results analysis and enhancement, as well as process automation using PowerShell scripting and other available technologies
  • Provide daily support, systems maintenance, problem resolution, tracing and project support
  • Create and maintain installation and configuration Standard Operating Procedures (SOPs)
  • Maintain current knowledge of DoD security and technical guidelines and the organization's policies
  • Provide support for production and development environments
  • After-hours support is required for maintenance and patching when needed

Who you Are:

  • This position requires an active Top Secret/SCI with polygraph clearance, for which U.S. citizenship is needed by U.S. Government
  • Linux Administration (Red Hat, Ubuntu)
  • Windows OS Administration

Nice to Haves:

  • Enterprise Virtualization Tools
  • Multi-Factor Authentication
  • Public Key Infrastructure
  • Web Server
  • Active Directory including Group Policy, LDAP backend, and Replication
  • Effective utilization of Security Technical Implementation Guidelines (STIGS) and Security Content Automation Protocol (SCAP) Content and Tools
  • Host Based Security System (HBSS) implementation and maintenance
  • Assured Compliance Assessment Solution (ACAS) support
  • Current knowledge of DoD Ports, Protocols, and Services (PPS)

Education:

Bachelor’s degree + 5 years of experience or Master’s degree + 3 years of experience or PhD or equivalent experience.

Pay Information 

Full-Time Salary Range:  $105,000 to $125,000

The salary range listed is based on external market data. Offers are based on factors, such as but not limited to, the candidate’s experience, education, training, key skills/critical skills, security clearances, and prevailing market and business conditions. 

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, and electronic warfare; and artificial intelligence algorithms and analytics to make sense of the complexity that is exploding around us.

STR is committed to creating 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 not just any company. 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! Visit us at www.str.us for more info.


STR is an equal opportunity employer. We are fully dedicated to hiring the most qualified candidate regardless of race, color, religion, sex (including gender identity, sexual orientation and pregnancy), marital status, national origin, age, veteran status, disability, genetic information or any other characteristic protected by federal, state or local laws.

If you need a reasonable accommodation for any portion of the employment process, email us at [email protected] and provide your contact info.

Pursuant to applicable federal law and regulations, positions at STR require employees to obtain national security clearances and satisfy the requirements for compliance with export control and other applicable laws.

Similar Jobs at STR

7 Days Ago
Easy Apply
In-Office
Easy Apply
200K-250K Annually
Senior level
200K-250K Annually
Senior level
Machine Learning • Security • Software • Analytics • Defense
Manage complex national security programs involving multidisciplinary teams, government customers, subcontractors, and partner organizations. The role oversees cost, schedule, technical performance, proposals, resource management, risk mitigation, contracting, and programmatic baselines. Responsibilities include leading teams, negotiating subcontractor work, briefing leadership, tracking metrics, and ensuring delivery against objectives. Candidates need active TS/SCI clearance, significant Department of War or intelligence-community program management experience, technical expertise, and experience managing programs exceeding $10 million.
Top Skills: Earned Value Management System (Evms)ExcelIntegrated Master Schedule (Ims)MS OfficeMicrosoft ProjectPowerPointWordWork Breakdown Structure (Wbs)
7 Days Ago
Easy Apply
In-Office
Easy Apply
112K-154K Annually
Entry level
112K-154K Annually
Entry level
Machine Learning • Security • Software • Analytics • Defense
Reverse engineer complex software, firmware, binaries, and embedded systems; develop automated binary analysis tools; research vulnerabilities; create exploits, payloads, and mitigations; analyze protocols and code flows; and present cybersecurity research supporting national security missions.
Top Skills: Afl++Analog DevicesArm AssemblyBinary NinjaCC++Dsp ArchitecturesEmbedded FirmwareGhidraIda ProLinuxNxpPythonQemuStmicroelectronicsTexas InstrumentsWindowsX86 Assembly
9 Days Ago
Easy Apply
In-Office
Easy Apply
93K-117K Annually
Senior level
93K-117K Annually
Senior level
Machine Learning • Security • Software • Analytics • Defense
Lead federal procurement for defense and intelligence programs across the full lifecycle, ensure FAR/DFARS compliance, manage vendors, conduct source selection and cost analyses, mentor staff, drive process improvements, and apply AI tools to optimize contracts and supply chain performance.
Top Skills: Ai-Enabled ToolsErp Systems

What you need to know about the Los Angeles Tech Scene

Los Angeles is a global leader in entertainment, so it’s no surprise that many of the biggest players in streaming, digital media and game development call the city home. But the city boasts plenty of non-entertainment innovation as well, with tech companies spanning verticals like AI, fintech, e-commerce and biotech. With major universities like Caltech, UCLA, USC and the nearby UC Irvine, the city has a steady supply of top-flight tech and engineering talent — not counting the graduates flocking to Los Angeles from across the world to enjoy its beaches, culture and year-round temperate climate.

Key Facts About Los Angeles Tech

  • Number of Tech Workers: 375,800; 5.5% of overall workforce (2024 CompTIA survey)
  • Major Tech Employers: Snap, Netflix, SpaceX, Disney, Google
  • Key Industries: Artificial intelligence, adtech, media, software, game development
  • Funding Landscape: $11.6 billion in venture capital funding in 2024 (Pitchbook)
  • Notable Investors: Strong Ventures, Fifth Wall, Upfront Ventures, Mucker Capital, Kittyhawk Ventures
  • Research Centers and Universities: California Institute of Technology, UCLA, University of Southern California, UC Irvine, Pepperdine, California Institute for Immunology and Immunotherapy, Center for Quantum Science and Engineering

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account