System Administrator

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

Benefits offered by this job

Paid Time Off

11 paid Holidays

401K with 6% company match

Flexible schedules

Parental Paid Leave

Discounted stock purchase plans

Technical Upskilling

Job summary

Leidos seeks a Windows System Administrator to join a high-performing team supporting a complex program at Robins AFB. The role requires active TS/SCI eligibility and a DoD Secret to start, with duties spanning daily systems administration, O&M, and patching across VMware, Windows, Linux, and VDI environments.

You'll monitor systems, manage AD/DNS, implement GPOs, and coordinate with cross-functional teams on security and performance improvements.

Qualifications

• Bachelor’s degree in IT or a related technical field and 10 years of prior relevant experience (or substitution).
• Minimum 5 years of Windows administration experience.
• 3 years of information security management experience.
• Active IAT Level II baseline certification upon hire (e.g., Security+ CE).

Responsibilities

• Monitor and administer systems, applications, and processes to identify, track, and resolve issues.
• Support servers, security management, and performance optimization in VMware/Windows/Linux/VDI environment.
• Maintain multiple virtual server clusters and respond to alerts using enterprise monitoring tools.
• Implement security patches, IAVA management, and system scans; remediate vulnerabilities promptly.

Skills

Windows administration

Information security management

IAT Level II baseline

Active Directory

PowerShell

Security governance

IAVA management

VMware

Linux

Education

Bachelor’s degree in IT or related field

Tools

Active Directory

DNS

Group Policy Objects (GPOs)

Microsoft Exchange

PowerShell scripting

Tenable

Trellix

VMware VCF

Job description

Join a team committed to a mission!

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. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security!

Primary Responsibilities

The selected candidate will be responsible for monitoring and administrating systems, applications, and processes to ensure issues are identified, tracked, and resolved in a timely manner.

This role also includes 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).

Additional Responsibilities Include

• 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 a DoD 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.

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

October 14, 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

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 www.Leidos.com.

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 www.leidos.com/careers/pay-benefits.