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Description

Leidos** has a new and exciting opportunity for a **Principal Linux Engineer** in our **National Security Sector's (NSS) 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.

This is a unique opportunity to support a complex, mission-critical program for the Warfighter, implementing cutting-edge technologies with lasting impact. If you're a proactive self-starter with deep systems engineering experience and strong Linux administration skills, we want you on our team.

Responsibilities include:

+ Derive functional, system, and performance requirements

+ Develop systems engineering artifacts (CONOPs, architecture diagrams, etc.)

+ Lead backlog grooming and feature scheduling

+ Write and review technical documentation

+ Serve as team lead and produce status reports

+ Participate in Integrated Product Teams to design new capabilities

+ Support DoD and Government Certification/Accreditation processes

+ Configure and manage UNIX/Linux and Windows operating systems

+ Install/load software, troubleshoot issues, and implement system enhancements

+ Maintain network integrity and optimize system performance

+ Provide IT support for client/server/storage/network devices and mobile platforms

+ Manage accounts, access controls, and security procedures

+ Support dispatch systems and hardware issues

+ Conduct system capacity analysis and planning

Experience:

+ 20+ years of relevant experience

Education:

+ Bachelor’s degree in Systems Engineering, Computer Science, Information Systems, or related field

Clearance:

+ Top Secret/SCI with Polygraph

Technical Skills:

+ Proficiency in Linux, Windows, and virtualization

+ Experience with Atlassian tools (Jira, Confluence), Agile methodologies, MS Project, and Visio

CSSRC

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:

October 8, 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 $148,850.00 - $269,075.00

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.

REQNUMBER: R-00168385

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.