Windows System Administrator

Windows Systems Administrator
Location: Suitland, MD
Clearance Required: Active TS/SCI

Leidos is seeking an experienced Windows Systems Administrator to support critical mission operations at the Office of Naval Intelligence in Suitland, MD. This role is more than just IT—it’s about enabling operations that shape national security. If you're ready to work with cutting-edge systems and make a real-world difference, we want you on our team.

Primary Responsibilities:

• Administer MS Exchange, Data Spillage Compliance and Restoration of Mailboxes.
• Administer and support Windows-based mission applications and hardware.
• Configure, maintain, and secure physical and virtual systems to STIG standards.
• Support system upgrades, backups, and performance tuning.
• Collaborate across IT teams to ensure seamless operations and mission success.
• Resolve technical issues using existing ticketing system and manage change requests.
• Maintain detailed documentation and asset inventories.
• Perform ACAS Driven System remediations to exceed System Compliance standards.
• Support Cloud based Functions, integration and ongoing Exchange Online Migration.

Basic Qualifications:

• Active TS/SCI clearance (in DISS).
• Bachelor’s degree with 8+ years of related experience or Master’s degree with 6+ years of related experience. Additional experience may be considered in lieu of degree.
• Security+ CE or IAT Level II certification (or ability to obtain prior to start).
• Hands-on experience with Windows Server (2008–2022), MS Exchange, Active Directory, SCCM, and GPOs.
• Strong troubleshooting, configuration, and migration skills.
• Excellent communication and teamwork abilities.
• Familiarity with rack-mounted servers, networking, and peripherals.
• Familiarity with Virtual Based servers and networking.
• Familiarity with Cloud based servers, networking, and concepts.

Join a team where your technical expertise fuels national defense. Apply now and help us push the boundaries of innovation and security.

NITESONI

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:

April 1, 2026

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.