Principal Linux Engineer

Job Description

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 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.