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IT Systems Admin - Defense​/Classified; FS Poly

Job in Reston, Fairfax County, Virginia, 22090, USA
Listing for: Peskind Executive Search
Full Time position
Listed on 2025-12-27
Job specializations:
  • IT/Tech
    Cybersecurity, IT Support, Systems Engineer, Systems Administrator
Salary/Wage Range or Industry Benchmark: 136000 - 275000 USD Yearly USD 136000.00 275000.00 YEAR
Job Description & How to Apply Below
Position: IT Systems Admin - Defense/Classified (FS Poly)

FULL SCOPE POLY Clearance - REQUIRED Our client is a defense technology company with a mission to transform U.S. and allied military capabilities with advanced technology. By bringing the expertise, technology, and business model of the 21st century’s most innovative companies to the defense industry, our client is changing how military systems are designed, built and sold. Our client's family of systems is powered by an AI-powered operating system that turns thousands of data streams into a realtime, 3D command and control center.

As the world enters an era of strategic competition, our client is committed to bringing cutting-edge autonomy, AI, computer vision, sensor fusion, and networking technology to the military in months, not years. Our client is seeking an IT Systems Administrator to directly support our most sensitive programs. You will be a part of the team building and maintaining the critical classified infrastructure.

You will have the opportunity to work with and learn from some of the world’s best engineers and cybersecurity professionals as you help to implement cutting edge systems. You will work directly with customers and systems deployed across the globe in support of national security missions all while gaining invaluable experience navigating complex cybersecurity regulation frameworks.

WHAT YOU’LL DO
  • Build IT infrastructure at all classification levels and a variety of handling requirements (SAP, SCI) in ways that have not previously been done in classified spaces
  • Design, install, operate, maintain and troubleshoot classified IT systems consisting of a variety of operating systems (mainly Linux and Windows) and hardware
  • Work in close coordination with the ISSM and ISO in monitoring the information system(s) implementing configuration management across authorization boundaries
  • Serve as subject matter expert for classified IT matters that require escalation
  • Define, document and follow standards and best practices for systems design, testing, and implementation
  • Drive scripting and automation to develop solutions to common problems
REQUIRED QUALIFICATIONS
  • Experience managing Windows Server and Windows Active Directory; to include file and print services, DNS, Domain Controllers, and application servers
  • Familiar with administration of Linux-based systems
  • Fundamental understanding of networking
  • Experience in unclassified, internet exposed environments to inform parity of classified environments
  • Understanding of basic security best-practices and hardening of Microsoft environments
  • Experience working with virtualized infrastructure (e.g., ESXi, Linux KVM, Hyper‑V, Docker)
  • Previous experience deploying IT systems from scratch
  • Must possess and be able to maintain a U.S. TS Security clearance
PREFERRED QUALIFICATIONS
  • Previous support to classified IT systems
  • Experience with a scripting language (Bash, Python, etc.) to automate and solve reoccurring tasks
  • Active TS/SCI/ISSA Clearance

US Salary Range
$136,000 — $275,000 USD

The salary range for this role is an estimate based on a wide range of compensation factors, inclusive of base salary only. Actual salary offer may vary based on (but not limited to) work experience, education and/or training, critical skills, and/or business considerations. Highly competitive equity grants are included in the majority of full time offers; and are considered part of our client's total compensation package.

Additionally, our client offers top-tier benefits for full-time employees, including:

  • Platinum Healthcare Benefits:
    For U.S. roles, we offer top tier platinum coverage (medical, dental, vision) that are 100% covered by our client for you and 90% covered for your dependents.
    • For UK roles, Private Medical Insurance (PMI):
      Our client will cover the full cost of the insurance premium for an employee and dependents.
    • For AUS roles, Private health plan through Bupa:
      Coverage is fully subsidized by our client.
  • Basic Life/AD&D and long-term disability insurance 100% covered by our client, plus the option to purchase additional life insurance for you and your dependents.
  • Extremely generous company holiday calendar including a holiday hiatus in December, and highly competitive…
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