Linux Systems Administrator – Active Security Clearance Required

Were looking for a Linux Systems Administrator to provide advanced technical computer support for systems in a heterogeneous environment to solve a variety of complex technical problems in a timely manner. This position is in the Information Technology Operations (ITO) Division within the Computing Directorate.

This position requires full-time on-site presence due to the nature of the work. Telecommuting options are not available.

This position will be filled at either level based on knowledge and related experience as assessed by the hiring team. Additional job responsibilities (outlined below) will be assigned if hired at the higher level.

You will

• Provide Tier 3 support for Linux systems including incident resolution root cause analysis and long-term remediation on classified and unclassified networks.
• Design implement and maintain secure highly available Linux server environments (RHEL Rocky Alma Ubuntu or similar distributions).
• Implement and maintain system hardening in alignment with security policies STIGs CIS benchmarks and relevant compliance frameworks.
• Monitor system performance and capacity and propose improvements to reliability scalability and security.
• Create and maintain documentation for system architectures procedures runbooks and troubleshooting guides.
• Collaborate with cybersecurity teams to support vulnerability management incident response and audit activities on both classified and unclassified systems.
• Manage the operations of the Linux storage environments.
• Perform installation of software releases patches of operating systems and utilities third-party products and open-source software.
• Collaborate with management customers and team members to evaluate and recommend procurement of Linux hardware and software.
• Perform other duties as assigned.

Additional job responsibilities at the 393.2 Level

• Diagnose troubleshoot and resolve complex system and network related problems.
• Serve as a technical leader internal and external consultant in area of expertise providing highly advanced technical assistance to the use community and collaborating with customers in the design of their computing environment.
• Implement highly advanced designs produced in collaboration with data scientists and infrastructure architects.

Qualifications :

• Active DOE Q clearance (or active Top Secret clearance) with the ability to obtain and maintain Sensitive Compartmented Information (SCI) access.
• Ability to successfully complete a lifestyle polygraph as required by the sponsoring program.
• Bachelors Degree in a Computer Information Technology or Engineering related field or equivalent combination of technical training and experience.
• Strong understanding of networking fundamentals (TCP/IP DNS routing firewalls) as they relate to Linux systems.
• Broad and in-depth knowledge of and technical experience with Linux operating systems and related hardware.
• Experience applying security hardening standards and working in environments with strict security and compliance requirements.
• Experience with complex troubleshooting.
• Advanced ability to set priorities and independently resolve complex problems in a fast-paced environment.
• Experience patching operating systems and performing installation of software releases.
• Proficient interpersonal and communication (verbal and written) skills with the ability to work independently and interact with a multi-disciplinary staff in a team environment.

Additional Qualifications at the 393.2 Level

• Highly advanced knowledge of and significant technical experience with Linux operating systems virtual environments and/or related hardware.
• Experience mentoring employees in technical areas.
• Significant experience as a technical lead on advanced projects achieving positive results and driving projects to closure on time and on budget.

Desired Qualifications

• Broad and in-depth knowledge and technical expertise with enterprise support tools for management patching backup or software distribution Linux operating systems and computer security concepts and practices and computer network hardware/software protocols and principles.
• Experience with writing intermediate to advanced shell scripts.
• Experience with one or more of the following technologies: SPLUNK Tenable Security Scanner Nessus Puppet Ansible or equivalent Nagios RHN Satellite PKI authentications Active Directory Scripting GIT BIND DNS Perl CSH/BASH Docker Podman and other container technologies.

Pay Range

$125310 - $153444 Yearly at the 393.1 level

$151620 - $185640 Yearly at the 393.2 level

This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting; pay will not be below any applicable local minimum wage.  An employees position within the salary range will be based on several factors including but not limited to specific competencies relevant education qualifications certifications experience skills seniority geographic location performance and business or organizational needs.

Additional Information :

#LI-Onsite

Position Information

This is a Career Indefinite position open to Lab employees and external candidates.

Why Lawrence Livermore National Laboratory

• Included in 2026 Best Places to Work by Glassdoor!
• Flexible Benefits Package
• 401(k)
• Relocation Assistance
• Education Reimbursement Program
• Flexible schedules (*depending on project needs)
• Our values - visit  Clearance

  This position requires an active Department of Energy (DOE) Q-level clearance or active Top Secret clearance issued by another U.S. government agency at time of hire. 

  Pre-Employment Drug Test

  External applicant(s) selected for this position must pass a post-offer pre-employment drug test. This includes testing for use of marijuana as Federal Law applies to us as a Federal Contractor.

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  Remote Work :

  No

  
  

  Employment Type :

  Full-time