Principal Linux Systems Administrator

Leidos Holding$116K — $210K *
Technical Services
11 - 15 years of experience
Job Overview by Ladders

Qualifications

  • 15+ years of experience as a System Administrator supporting complex programs and contracts.
  • Bachelor's degree in a technical discipline, or 20 years of experience in lieu of a degree.
  • Proficiency in Linux, Windows, and Virtualization technologies.
  • Active Top Secret/SCI security clearance with Polygraph required.
  • Strong understanding of IT security and compliance standards.

Responsibilities

  • Ensure systems meet STE/STN compliance and security standards.
  • Manage user accounts, network rights, and implement security protocols.
  • Configure and manage UNIX and Windows operating systems and software installations.
  • Provide IT support, monitoring, and troubleshooting for various devices.
  • Assist users in navigating IT systems and resolve escalated support tickets.
  • Optimize system operations, perform capacity planning and analysis.
  • Support dispatch systems and troubleshoot hardware/software issues.

Benefits

  • Eligibility for a $10,000 sign-on bonus.
Full Job Description
Join our team as a Linux Systems Administrator, where you'll provide crucial support for the implementation, troubleshooting, and maintenance of Information Technology (IT) systems. You'll manage IT system infrastructure and processes, ensuring the smooth operation of client/server/storage/network devices, mobile devices, and more. Your role will involve configuring and managing UNIX and Windows operating systems, troubleshooting, maintaining network integrity, and enhancing system performance.

This position is eligible for a 10k Sign on Bonus!

Primary Responsibilities:
  • Maintain STE/STN Compliance: Ensure systems meet security and compliance standards.
  • Account and Access Management: Manage accounts, network rights, and access to systems and equipment, implementing security procedures and tools.
  • System Configuration and Management: Configure and manage UNIX and Windows operating systems, install/load software, troubleshoot, maintain network integrity, and implement system enhancements.
  • IT Support and Troubleshooting: Provide day-to-day IT support, monitoring, and problem resolution for client/server/storage/network devices and mobile devices.
  • User Assistance: Assist users in accessing and using IT systems, providing support for escalated tickets and detailed analysis.
  • System Optimization and Capacity Planning: Optimize system operations and resource utilization, perform system capacity analysis and planning.
  • Dispatch System and Hardware Support: Support dispatch systems and hardware issues, configure and install system hardware/software, and maintain server and domain security requirements.

BasicQualifications:
  • Experience: Fifteen (15) or more years of experience as a System Administrator (SA) supporting programs and contracts of similar scope, type, and complexity.
  • Education: Bachelor's degree in a technical discipline from an accredited college or university. Five (5) years of additional SA experience may be substituted for a bachelor's degree bringing the required experience to 20 years.
  • Technical Skills: Experience with LINUX, Windows and Virtualization
  • Security Clearance: Must have an active Top Secret/SCI with Polygraph


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Original Posting:
July 6, 2026

Pay Range:
Pay Range $116,350.00 - $210,325.00

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

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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.

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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.

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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.

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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.

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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.

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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.

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