Windows System Administrator

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 missioncritical setting., * 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.

• 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.

Pay and benefits are fundamental to any career decision. That’s why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

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, Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.