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Principal/Sr. Principal Linux Systems Administrator
Principal/Sr. Principal Linux Systems Administrator-March 2024
San Diego
Mar 28, 2026
ABOUT NORTHROP GRUMMAN
Northrop Grumman solves the toughest problems in space, aeronautics, defense, and cyberspace to meet the ever-evolving needs of customers worldwide. Their 95,000 employees are Defining Possible every
10,000+ employees
Technology, Engineering
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About Principal/Sr. Principal Linux Systems Administrator

  At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon. We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work - and we have an insatiable drive to do what others think is impossible. Our employees are not only part of history, they're making history.

  Northrop Grumman Mission Systems is a trusted provider of mission-enabling solutions for global security. Our organization is chartered with providing the skills, innovative technologies to develop, design, produce and sustain optimized product lines across the sector while providing a decisive advantage to the warfighter.

  We are looking for you to join our team as a Principal/Sr. Principal Linux Systems Administrator based out of San Diego, CA. As a Principal/Sr. Principal Linux Systems Administrator at Northrop Grumman you will have a challenging and rewarding opportunity to be a part of our Enterprise-wide digital transformation. Through the use of Model-based Engineering, DevSecOps and Agile practices we continue to evolve how we deliver critical national defense products and capabilities for the warfighter. Our success is grounded in our ability to embrace change, move quickly and continuously drive innovation. The successful candidate will be collaborative, open, transparent, and team-oriented with a focus on team empowerment & shared responsibility, flexibility, continuous learning, and a culture of automation.

  This position requires full-time on-site work.

  What You'll get to Do:

  Roles & Responsibilities include but aren't limited to:

  Configures and maintains a secure computing environment

  Scans, patches, and hardens the computing environment to meet customer requirements

  Collects, audits, and stores necessary log data for the system

  Develops artifacts necessary to support assessment and authorization of the system

  Makes recommendations to improve the security and usability of the system

  Occasional travel may be required

  This requisition may be filled at either a Principal Level or a Sr. Principal Level.

  Qualifications

  Basic Qualifications for Principal Linux Systems Administrator:

  Bachelor's Degree from an accredited University/College and 6 years of related experience, or a Master's with 4 years of related experience; an additional 4 years of relevant experience can be considered in lieu of a Bachelors Degree.

  Experience with configuring, administering, and maintaining Red Hat or other linux systems

  Active certification at DOD 8570 IAT Level II (e.g. Security+) or greater

  Clearance: Candidate must currently have, and be able to maintain an active U.S. Government DOD Secret Clearance

  Must have the ability to obtain, and maintain, a Special Access Programs (SAP/SAR) level clearance as a condition of continued employment

  Basic Qualifications for Sr. Principal Linux Systems Administrator:

  Bachelor's Degree from an accredited University/College and 10 years of related experience, or a Master's with 8 years of related experience; an additional 4 years of relevant experience can be considered in lieu of a Bachelors Degree.

  Experience with configuring, administering, and maintaining Red Hat or other linux systems

  Active certification at DOD 8570 IAT Level II (e.g. Security+) or greater

  Clearance: Candidate must currently have, and be able to maintain an active U.S. Government DOD Secret Clearance

  Must have the ability to obtain, and maintain, a Special Access Programs (SAP/SAR) level clearance as a condition of continued employment

  Preferred Qualifications:

  Experience with Red Hat Enterprise Linux (RHEL) Public Key Infrastructure (PKI)

  Experience with obtaining and maintaining authority to operate (ATO)

  Experience with patching systems, scanning for vulnerabilities (Security Center/Nessus, SCAP), hardening systems (DISA STIGs), auditing log files, and updating virus definitions

  Experience as an administrator for Red Hat or similar Linux systems within a DoD context

  Salary Range: $97,500 - $146,300

  Salary Range 2: $120,900 - $181,300

  The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate's experience, education, skills and current market conditions.

  Employees may be eligible for a discretionary bonus in addition to base pay. Annual bonuses are designed to reward individual contributions as well as allow employees to share in company results. Employees in Vice President or Director positions may be eligible for Long Term Incentives. In addition, Northrop Grumman provides a variety of benefits including health insurance coverage, life and disability insurance, savings plan, Company paid holidays and paid time off (PTO) for vacation and/or personal business.

  Northrop Grumman is committed to hiring and retaining a diverse workforce. We are proud to be an Equal Opportunity/Affirmative Action Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO/AA and Pay Transparency statement, please visit http://www.northropgrumman.com/EEO . U.S. Citizenship is required for most positions.

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