Leidos has a new and exciting opportunity for a Systems Administrator in our Intelligence Sector's Cyber & Analytics Business Area (CABA) Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management.
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!
Program Summary
Leidos delivers advanced technical, engineering, and system administration expertise in direct support of a high-priority foreign engagement mission. This established effort leverages solutions, alongside tailored engineering approaches, to enable mission-critical capabilities within a secure, high-trust environment. The program supports a complex and evolving mission where experienced cleared professionals operate side-by-side with the customer to architect, integrate, modernize, and optimize systems that directly drive operational outcomes.
The System Administrator will provide hands-on administration, maintenance, and troubleshooting support for mission-critical IT systems operating within secure and classified environments. This role is responsible for maintaining reliable and secure Linux and Windows infrastructure, supporting core enclave services, and resolving technical issues from the operating system through the application layer. The ideal candidate will bring strong Linux administration experience, a solid understanding of networking, virtualization, storage, and security, and the ability to support complex operational environments. This position requires a proactive administrator who can independently diagnose issues, maintain system compliance, and ensure infrastructure availability and performance.
Key Responsibilities
System Administration & Troubleshooting: Administer, maintain, and troubleshoot Linux and Windows systems, diagnosing and resolving technical issues ranging from the operating system through the application layer.
Linux Server Administration: Install, configure, patch, upgrade, secure, and maintain Linux servers, including RHEL, Rocky Linux, CentOS, or comparable enterprise Linux distributions.
Core Infrastructure Services: Configure and maintain core enclave infrastructure services, including DHCP, DNS, domain services, identity management, authentication, and related network services.
Virtualization & Infrastructure Support: Deploy and support virtualized and/or containerized environments while managing supporting infrastructure, including compute, storage, networking, and system resources.
Network & Storage Administration: Support storage platforms, network connectivity, system interfaces, and associated infrastructure; troubleshoot performance, availability, and connectivity issues across complex environments.
Security & Compliance: Maintain systems in accordance with applicable System Security Plans (SSPs) and secure administration requirements, including Secure the Enterprise (STE)/Secure the Network (STN) activities. Configure, monitor, and maintain security tools required to support DoD networks and cybersecurity requirements.
Classified Environment Support: Provide day-to-day administration and technical support within classified operational environments, maintaining secure and reliable mixed Linux/Windows environments while ensuring systems remain operational, compliant, and mission ready.
Required Qualifications
Ten (10) years of experience as a System Administrator supporting programs and contracts of similar scope, type, and complexity.
Bachelor’s degree in a technical discipline from an accredited college or university.
Five (5) additional years of System Administration experience may be substituted for the bachelor’s degree.
Desired Skills
Experience administering or supporting AWS cloud environments.
Experience with virtualization platforms such as KVM, Proxmox, VMware, or similar technologies.
Experience with enterprise identity and authentication technologies such as FreeIPA, Centrify, LDAP, and Active Directory.
Knowledge of PKI, TLS, certificates, encryption, and other cryptographic technologies.
Experience with container technologies such as Docker, Podman, Kubernetes, or comparable platforms.
Familiarity with automation and configuration management tools such as Ansible, Bash, Python, or PowerShell.
Strong understanding of TCP/IP networking, DNS, routing, firewalls, system hardening, and secure network architecture.
Ability to independently troubleshoot complex infrastructure issues, identify root causes, and implement sustainable technical solutions.
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NSSPF
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.
August 27, 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 $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.
Leidos is a Fortune 500® innovation company rapidly addressing the world’s most vexing challenges in national security and health. The company's global workforce of 48,000 collaborates to create smarter technology solutions for customers in heavily regulated industries. Headquartered in Reston, Virginia, Leidos reported annual revenues of approximately $15.4 billion for the fiscal year ended December 29, 2023.
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 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.
Your most important work is ahead, visit careers.leidos.com for our latest opportunities.
