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Description

The DTRA program at Leidos is seeking a **Senior Linux Administrator** in **Fort Belvoir, VA** to support the DTRA I3TS Infrastructure Services team to maintain and optimize the Linux production environment. The candidate will be responsible for sustaining Linux servers as well as the conceptualization, design, development and implementation of new Linux capabilities. The candidate is expected work well as a part of the DTRA Systems Administration team using ITIL best practices as well as work independently on assigned tasks. Candidate is expected to support the entire service lifecycle from design through development to production, building and deploying Linux based systems in a virtual environment.

Clearance: Must hold a Top Secret/SCI Clearance.

Required Skills:

Candidate should be familiar with system automation technologies, basic database administration and tuning. Candidate must demonstrate a high degree of problem-solving ability in a complex environment and be able to communicate effectively, both to the customer and to team members.

+ Provision servers and environments

+ Manage user access

+ Maintain servers in virtual environment

+ Automation knowledge scripting in Unix shell and Ansible playbooks

+ Maintain and improve configuration management templates

+ Monitor system performance and respond to alerts

+ Establish and maintain NTP services in the production environment

+ Maintain satellite servers for the agency, software releases and patches

+ Experience with the following emerging technologies or an equivalent technology: Kubernetes, Open Shift, Containers, GitHub, Ansible Tower

+ Ensure compliance with security standards and practices aligned with DoD STIGs.

+ Experience with web servers and use of certificates

+ Open Source: Apache Hadoop, Zookeeper, Puppet

+ App Servers: JBoss, Tomcat, Jetty, NGINX, HTTP

Basic Qualifications:

+ Bachelors with 8+ years, or MS degree with 4-6 years of experience in IT operations working with Linux servers and Virtualization

+ Must hold a Top Secret/SCI Clearance.

+ 2-3+ years of Windows Server experience.

+ 2-3 years of experience with web server management and implementation; troubleshooting of websites, applications, and security implementations.

+ Understanding of virtualized infrastructure, server backup and restoral procedures, application of STIGs and cyber hardening approaches.

+ Basic experience with log file analysis

+ Basic experience with Red Hat Satellite tool for deploying, configuring, and maintaining Red Hat Enterprise Linux (RHEL) across physical, virtual, and cloud environments.

+ Basic understanding of Red Hat, provisioning, and patching, often using Satellite Capsules for distributed content delivery and local services like DHCP/DNS in large or remote setups. It centralizes RHEL management, improving security and efficiency by handling subscription management, content views, and system auditing from a single console.

+ Basic understanding of Red Hat command line tools: System Management, Manage RPM packages, and Package Management.

Certifications:

+ IAT II (8570) Certification

+ Red Hat Certification - Red Hat Certified System Administrator (RHCSA) (Preferred)

Come break things (in a good way). Then build them smarter.

We're the tech company everyone calls when things get weird. We don’t wear capes (they’re a safety hazard), but we do solve high-stakes problems with code, caffeine, and a healthy disregard for “how it’s always been done.”

Original Posting:

December 29, 2025

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 onlyand 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 (https://reportfraud.ftc.gov/#/) .

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.

REQNUMBER: R-00172790

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws. Leidos is an equal opportunity employer/disability/vet.