The Leidos Digital Modernization Sector is seeking a Windows Systems Administrator in support of the Air Force National Capital (AFNCR) IT Services program.
At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customer’s success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.
This position is 100% onsite at Joint Base Andrews in Maryland and requires an active Secret clearance to start.
Primary Responsibilities:
Support our Windows infrastructure to include installation, configuration, patching, and upgrades, with a strong emphasis on utilizing PowerShell and/or Windows tools to continuously review and streamline these processes.
Support all aspects of our Windows Active Directory infrastructure (Unclassified & Classified), Windows DNS, DHCP, Veritas replicated file shares management & Windows DFS Shares.
Implement and maintain robust system hardening techniques using security compliance tools such as Evaluate STIG, SCAP, STIG Viewer.
Troubleshoot and resolve system issues, support root cause analysis, and implement solutions.
Maintain these scripts/tools to manage system administration, monitoring, and deployment workflows.
Interface with vendors to ensure appropriate resolution during system outages or periods of reduced performance.
Execute preventive maintenance, and brief Change Review Board (CRB) as required for major changes to the production environment.
Perform software installations and upgrades to operating systems and layered software packages.
Support special projects and day‐to‐day operations as needed or assigned.
Support on-call rotation schedule.
Basic Qualifications:
Bachelor's degree in information systems, computer science, information security or related field and 4+ years of prior relevant work experience; additional years of experience will be accepted in lieu of a degree.
3+ years of Senior level experience in Windows server (Server OS 2019, 2022) and Windows 10/11 administration.
Requires a current 8140 IAT Level II (Intermediate or Advanced) certificate (CompTIA Security+) or Training (DISA-US1390 DCWF Windows Systems Administrator).
Strong proficiency in managing Active Directory, DNS, DHCP, and Group Policy.
Knowledge of DoD patch Management and Vulnerability Remediation (Process and Tools).
Experience with various client hardware including HP and Dell laptops, desktops, and associated peripherals.
Experience with PowerShell scripting and remote management of workstations and servers.
Working knowledge of debugging tools and processes for diagnosing system issues.
Experience in managing or working with cross-functional teams to deliver projects.
Experience with VMware and Hyper-V hypervisor.
Understanding of cybersecurity principles and best practices.
Knowledge of security tools and technologies to protect systems from vulnerabilities.
Solid understanding of TCP/IP networking principles.
Preferred Qualifications:
Experienced working at the Pentagon, Joint Base Andrews (JBA), and Joint Base Anacostia-Bolling (JBAB) Knowledge of Air Force, Pentagon, and/or AFNCR.
Ability to work effectively with diverse teams (software developers, hardware engineers, network specialists, etc.).
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:March 9, 2026For 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.
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.
Top Skills
What We Do
We Are Leidos
For 50 years we have been tackling some of the biggest problems that face our nation and our world.
OUR MISSION
Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020.
Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®.
Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos.
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