Systems Administrator/Engineer
Description
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
- Seven (7) 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.
Original Posting:
August 27, 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 $87,100.00 - $157,450.00The 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.
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.
Securing Your Data
Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [email protected].
If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.
Commitment to Non-Discrimination
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.
