System Administrator

Leidos; Robins Air Force Base (GA); On-site; USD 92,000 - 167,000; Full time

Job summary

Leidos is seeking a Windows System Administrator to support a complex program at Robins AFB. The role requires eligibility for TS/SCI and a Secret clearance, with duties spanning daily systems administration, O&M, and deployment of new capabilities across a broad geographic footprint.

The candidate will manage Windows/Linux servers, VMware-based environments, and VDI, while maintaining security scanning, IAVA responses, and documentation.

Qualifications

• Bachelor's degree in Information Technology or related field plus 10 years of relevant experience.
• Active Directory, DNS, and Group Policy experience with strong Windows server administration.
• IAT Level II baseline certification (CompTIA Security+ CE or higher) on hire.

Responsibilities

• Monitor and administer systems, applications, and processes; track and resolve issues in a timely manner.
• Support servers, security management, and performance optimization in VMware, Windows, Linux, and VDI environments.
• Maintain multiple virtual server clusters and respond to alerts with enterprise monitoring tools.

Skills

Windows administration

PowerShell scripting

Active Directory

DNS management

Group Policy Objects

Security governance

Analytical thinking

Independent work

Team collaboration

Education

Bachelor's degree in Information Technology

Tools

Tenable

Trellix

VMware VCF

Job description

Join a team committed to a mission! At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainable. 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. Are you ready for your next career challenge? Leidos is seeking a Windows System Administrator (requires minimum Secret clearance and individual must qualify for TS SCI) to join our high-performing team in support of a complex, fast-paced program. In this role, the selected candidate will provide daily systems administration and operations and maintenance support across multiple systems with a broad geographic footprint. Key responsibilities include supporting operational requirements, as well as engineering assistance, deploying, and sustaining new capabilities within the environment. You will be working at Robins AFB and be part of our talented team at the forefront of technology.

Primary Responsibilities:

• Monitoring and administrating systems, applications, and processes to ensure issues are identified, tracked, and resolved in a timely manner.
• Supporting servers, as well as performing security management and application performance optimization activities in an environment made up of VMware server hosts, Windows and Linux servers, and Virtual Desktop Infrastructure (VDI).
• Maintaining multiple virtual server clusters.
• Using enterprise monitoring tools to detect, assess, and respond to alerts.
• Providing technical support to partner workgroups on overlapping efforts while maintaining strong interdepartmental collaboration.
• Managing Information Assurance Vulnerability Alerts (IAVAs) and system security scanning in accordance with applicable System Security Plans, ensuring vulnerabilities are identified and remediated quickly and accurately.
• Initiating IAVA responses and system security scans, completing remediation actions, deploying patches and security updates to designated sites, and executing monthly security scans.
• Identifying and resolving hardware and software problems.
• Proactively notifying customers when test infrastructure delays may affect their ability to complete business functions on time and communicating system outages and publishing status updates to users, as needed.
• Authoring and maintaining clear, accurate, and concise documentation.
• Responding to calls and emails in a timely and professional manner.
• Planning and implementing IT enhancements and supporting project-related work.
• Addressing system scan findings, vulnerability management patching.

Basic Qualifications:

• Clearance Required: Must be eligible for TS/SCI. Minimum of aDoD Secret to start.
• Bachelor's degree, in Information Technology, or a related technical field and 10 years of prior relevant experience. Additional experience may be substituted for a degree.
• Must have at least 5 years of Windows administration experience.
• Must have at least 3 years of experience in information security management, with demonstrated expertise in security governance, risk management, compliance, and operational security functions.
• Have strong analytical skills, attention to detail, and the ability to work effectively both independently and as part of a team.
• Individual in this position must possess and maintain an active Information Assurance Technical (IAT) Level II baseline certification (CompTIA Security+ CE or higher) upon hire.
• Must have at least 3 years of experience with each of the following: Implementing and managing Windows Active Directory and DNS environments; Creating and managing Group Policy Objects (GPOs); Microsoft MCM; Microsoft Exchange administration and Exchange Management Shell.
• Must have experience with Windows Command Line, PowerShell, and PowerShell scripting.
• Strong understanding of advanced security protocols, standards, and information security principles is a must.
• Experience with software and security architecture.
• Hands-on experience with IAVA management.
• Hands-on experience supporting users, optimizing system operations, and monitoring enterprise IT systems.
• Commitment to best practices, including compliance with maintenance windows and changing control procedures.
• Experience with Windows and Linux operating systems.

Preferred Quals:

• Experience documenting and supporting security accreditation and certification activities.
• Experience with Tenable and Trellix security technologies.
• Experience with data center design and configuration, including rack-and-stack, power planning, and equipment placement.
• Experience with VMware VCF 9.0.2.
• Experience serving in a System Administrator role supporting software configuration management and classified environments.

Pay Range:

Pay Range: $92,300.00 - $166,850.00

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 here.

Securing Your Data:

Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity:

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

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 $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit www.Leidos.com.