Windows Systems Administrator Security Clearance

Position: Windows Systems Administrator with Security Clearance
R
- Description Windows Systems Administrator

Location:

Suitland, MD Security Clearance:
Active TS/SCI Required Leidos is seeking a Windows Systems Administrator III to support mission critical infrastructure in Suitland, MD. In this role, you will administer and maintain Windows server environments supporting enterprise infrastructure, standardized desktop services, and secure mission operations. The ideal candidate has extensive experience managing Microsoft technologies, troubleshooting complex systems, and maintaining secure, high availability Windows environments. Primary Responsibilities
* Administer and manage advanced Windows Server environments and Microsoft enterprise services.
* Maintain daily system operations by monitoring, identifying, troubleshooting, and resolving issues affecting servers, applications, and operating systems.
* Perform performance tuning, hardware upgrades, and resource optimization to ensure reliable system performance.
* Troubleshoot and resolve complex Windows Server issues.
* Research, document, and recommend new system technologies and improvements.
* Review and implement Information Assurance Vulnerability Alerts (IAVAs) and Information Assurance Vulnerability Bulletins (IAVBs).
* Install, configure, secure, maintain, document, troubleshoot, and administer SQL databases to ensure optimal performance.
* Support global operations by maintaining secure, resilient Windows infrastructure environments.
* Travel may be required to support other U.S. Navy commands both within the continental United States (CONUS) and outside the continental United States (OCONUS).

Required Qualifications
* Bachelor's degree with 8+ years of relevant experience or a Master's degree with 6+ years of relevant experience. Additional relevant experience may be considered in lieu of a degree.
* Active TS/SCI clearance (in DISS).
* Extensive experience administering enterprise Windows environments, including Active Directory (AD), Domain Name System (DNS), Dynamic Host Configuration Protocol (DHCP), Microsoft Exchange email services, Microsoft Azure Cloud, Remote Desktop Services, VMware, Omnissa, desktop management, and Windows Server services.
* Experience performing advanced system troubleshooting.
* Strong interpersonal and communication skills. Required

Certifications:

* Active CompTIA Security+ certification.

* Windows Server operating system certification or the ability to obtain within 30 days of an accepted offer. NITESONI DABAOPP1 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:
August 25, 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 - $ 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.

About Leidos 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  . Pay and Benefits 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  . Securing Your Data Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work).

Further, Leidos will only communicate with you through emails that are generated by the  automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via Whats App, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous…