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Windows System Administrator

Leidos

Location
Onsite (5019 Office of Naval Intelligence Suitland MD, Maryland)
Compensation
$92k - $166k/yr
Employment
Full-time
Level
Senior Level
Posted 4 days ago

About the role

Leidos is a global defense and technology leader seeking a Windows System Administrator to support mission-critical enterprise environments. The role focuses on building, securing, and maintaining Windows servers and workstations while ensuring compliance with strict government security standards.

Skills

Windows Server Administration ACAS Vulnerability Scanning Vulnerability Remediation Group Policy Management Active Directory Administration SCCM Deployment System Imaging Patch Management STIG Hardening SQL Server Configuration System Documentation RMF and A&A Support NetApp Storage Management VMware PowerShell Scripting Troubleshooting

Full job details

Windows System Administrator
Location: Suitland, MD

Clearance: TS/SCI

 

We are seeking an experienced Windows System Administrator in Suitland, MD to support enterprise Windows environments, system upgrades, vulnerability management, and secure configuration in a mission‑critical setting.

 

Key Responsibilities:

  • Build and upgrade Windows servers and workstations.
  • Run and analyze ACAS vulnerability scans.
  • Manage GPOs, Active Directory, and domain services.
  • Support SCCM deployments, imaging, and compliance.
  • Perform system patching and STIG hardening.
  • Provide basic SQL Server configuration and troubleshooting.
  • Maintain system documentation and support RMF/A&A activities.

 

Basic Qualifications:

  • Bachelor’s degree with 8+ years of experience or a Master’s degree with 6+ years of experience. Additional experience may be considered in lieu of a degree.
  • Active TS/SCI in DISS and required program access.
  • Active DoD 8570/8140 IAT II or III certification (Security+, CASP, CISSP, etc.).
  • Windows system administration in enterprise environments.
  • ACAS scanning and vulnerability remediation.
  • SCCM deployment and compliance reporting.
  • Patch management and STIG implementation.
  • GPO management and AD administration.
  • Strong troubleshooting and communication skills.

 

Preferred Qualifications:

  • NetApp storage management experience.
  • VMware experience.
  • PowerShell scripting.
  • Familiarity with RMF, STIG Viewer, and eMASS.

 

NITESONI

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If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

October 16, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $92,300.00 - $166,850.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.