System Administrator

The Digital Modernization Sector at Leidos has an opening for a System Administrator to support the Intelligence Community in providing technical support for the customer’s system test and integration lab, and customer production environment. The System Administrator provides hand-on support for the IT infrastructure and technical assistance and support as needed to on-site administrators supporting the other two environments. Key Responsibilities/Tasks:DNS Configuration and Management:Configure, maintain, and troubleshoot DNS zones, records, and resolution policies using the Infoblox application.Perform DNS zone transfers, updates, and changes as required by business needs.DHCP and IP Address Management:Oversee IP address allocation and management, ensuring efficient usage and accurate records.Implement IPAM strategies for efficient IP space management, including subnetting and supernetting.Monitoring and Reporting:Monitor the performance and health of DNS and DHCP services, addressing issues promptly.Generate regular reports on DNS and IP address utilization, providing insights and recommendations for optimization.Security and Compliance:Ensure compliance with organizational security policies and industry standards.Assist in auditing DNS and IPAM configurations to identify and mitigate potential risks.Troubleshooting and Support:Provide technical support and troubleshooting for DNS, DHCP, and IPAM-related issues.Work closely with other network and security teams to resolve complex networking issues.Documentation and Training:Maintain comprehensive documentation of DNS, DHCP, and IPAM configurations and processes.Train and support junior network administrators and other IT staff.RequirementsRequired Clearance: TS/SCI with CI PolyCandidate must have 10 years of experience that can be a combination of work history and education. This equates to a Doctorate and 3 years, master’s and 4 years, bachelor’s and 6 years, associates and 8 years or HS diploma and 10 years. Additional required qualifications include: Compliance with Department of Defense (DoD) 8570 Information Assurance Technical (IAT) Level 2. The ideal candidate will have either System Administration background, networking background, or extensive experience in managing and configuring DNS, DHCP, and IP Address Management (DDI). Candidates with System Administration and networking backgrounds will be properly trained to perform their day-to-day duties.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, 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.Pay Range:Pay Range $73,450.00 - $132,775.00The 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.SummaryLocation: 4065 Chantilly VAType: Full time