Senior Linux Systems Administrator

Leidos Holding$92K — $166K *
Aerospace & Defense
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • Active Interim Secret clearance or eligibility required upon start.
  • Bachelor's degree with 8+ years of relevant experience needed.
  • Current DOD 8570 IAT II certification required (Security +).
  • Linux certification (Linux + or RHCSA) required before start.
  • Strong verbal and written communication skills are essential.

Responsibilities

  • Administer RedHat Linux systems for optimal performance and security.
  • Conduct system enhancements, maintenance, and software upgrades.
  • Lead a team of Linux administrators with technical guidance and project oversight.
  • Promote a collaborative team environment by sharing best practices.
  • Manage the Enterprise Satellite server for software deployment and updates.
  • Utilize Ansible for automation of routine and complex tasks.
  • Monitor and tune systems to ensure performance meets established standards.

Benefits

  • Opportunity to work at one of the DoD's largest supercomputing centers.
  • Directly support mission-critical resources for the warfighter.
  • Engagement in high-impact projects with cutting-edge technology.
  • Collaborative work environment promoting professional development.
  • Position requires on-site work at Stennis Space Center.
Full Job Description
If you're interested in being a part of an extraordinary mission, working with our customer who runs the DoD's largest supercomputing centers and operating some of the most powerful supercomputers in the world, we could use your experience and enthusiasm! You will be providing your LINUX Systems Administration expertise to ensure DoD scientists have reliable access to these critical resources. You will be directly supporting the warfighter.

All of your work will be performed on customer site at Stennis Space Center and an Interim Secret Clearance is required to begin work on the program.

So, what will you be doing in this role?
  • Provide expert-level administration of RedHat Linux systems, ensuring optimal performance and security.
  • Perform systems enhancement, configuration, maintenance, installation, and software upgrades.
  • Lead a team of high-performing Linux administrators, providing guidance, technical expertise, and project leadership.
  • Foster a collaborative and productive team environment, sharing lessons learned and best practices.
  • Maintain and manage the Enterprise Satellite server, ensuring it meets the organization's software deployment and updates needs.
  • Automate routine and complex tasks using Ansible, streamlining operations and improving efficiency.
  • Monitor and tune systems to achieve optimum performance levels, adhering to established policies, procedures, and service level agreements.
  • Identify and address performance issues and optimize the production environment for mission-critical systems.
  • Perform acceptance testing of modules, subsystems, and total systems.
  • Responsible for software installation, configuration, and ensuring adherence to configuration guidelines.
  • Ensure compliance with established standards, policies, and configuration guidelines.
  • Maintain documentation and records to demonstrate adherence to regulatory requirements.


These are the required qualifications...
  • Must hold an active in Secret clearance or be able to obtain Interim Secret eligibility prior to start. (US Citizenship required)
  • Must hold a Bachelor's Degree with a minimum of 8 years related experience
  • Must hold current DOD 8570 IAT II certification - Security + and one of the following Linux certifications: Linux + or RedHat Certified System Administrator (RHCSA) prior to start.
    Communicates effectively both orally and in a written form with users and office staff

Original Posting:
June 15, 2026

Pay Range:
Pay Range $92,300.00 - $166,850.00

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.

About Leidos Holding

Leidos Holding Careers

Joining Leidos Holding presents an unparalleled opportunity to advance one's career with a leader in innovation and technology. The company offers a plethora of job opportunities aimed at fostering professional growth and development in a diverse and inclusive environment.

Explore Career Opportunities

Leidos Holding is actively seeking skilled professionals who are passionate about leveraging their expertise to drive innovation and leadership in their fields. With a variety of open positions, Leidos Holding provides a platform for individuals to challenge themselves in a dynamic work environment.

Innovation and Professional Growth

At Leidos Holding, innovation is at the core of everything they do. Employees are encouraged to think creatively and push boundaries. The company supports this drive for innovation through comprehensive professional development and diversity training programs that are designed to enhance skills and foster leadership.

Commitment to Diversity and Inclusion

Leidos Holding is committed to creating a workplace where diversity is not only recognized but celebrated. With a culture that values and promotes diversity, Leidos Holding ensures that all team members have the opportunity to contribute, learn, and grow.

Internship Programs

For those starting their career, Leidos Holding offers internship programs that provide a robust foundation in the industry. Internships are a great way to develop essential skills, gain valuable work experience, and build professional networks.

Benefits and Culture

Employees at Leidos Holding enjoy a range of benefits designed to support their professional and personal lives. The company culture is built on a foundation of respect and integrity, providing a supportive and collaborative environment where every team member is valued.

Join the Team

Leidos Holding is hiring! Explore job opportunities that match your skills and interests. Leidos Holding looks for driven, curious, and innovative individuals to join their team. Positions are available across various disciplines and experience levels.

Stay Connected

Stay informed with the latest career tips, industry insights, and company news from Leidos Holding. Subscribe to receive updates and be the first to know about new job opportunities, company developments, and more.

Prepare for Your Interview

To prepare for an interview at Leidos Holding, candidates should familiarize themselves with the company's missions and values, update their resumes, and be ready to discuss how their background and skills align with the position they are applying for.

Networking and Career Advancement

Leidos Holding encourages its employees to engage in networking within the company to discover new opportunities for career advancement. The leadership team at Leidos Holding is dedicated to supporting employees in their career paths with ample opportunities for networking and growth.

Explore Leidos Holding Jobs and Careers

Discover the exciting career opportunities at Leidos Holding today. With a commitment to employee growth, innovation, and diversity, Leidos Holding is the perfect place to advance your career. Check out the latest job listings and find your perfect fit at Leidos Holding.

SEARCH LEIDOS HOLDING JOBS

READ CAREERS BLOG

Job Alert Emails

Customize your subscription to receive job alerts and insider tips tailored to your preferences from Leidos Holding. See what exciting and rewarding opportunities await in your professional journey.
Learn more about Leidos Holding

Similar Jobs

More Jobs at Leidos Holding

More Aerospace & Defense Jobs

Find similar Senior Linux Systems Administrator jobs: