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Linux Unix System Administrator Jobs in California

ASEC, Inc.

Linux System Adminstrator

Ridgecrest, CA · On-site

$110K - $140K/yr

As a Linux System Administrator , you will be responsible for ensuring secure configurations, producing accreditation artifacts, and maintaining hardened baselines - all with a focus on reliability ...

Meissner Filtration Products

Meissner Corporation is seeking an AI Systems Administrator to own and evolve the systems that host our AI tooling and services. You will deploy, operate, and optimize Linux-based infrastructures ...

Meissner

Linux System Administrator

Camarillo, CA

Meissner Corporation is seeking an AI Systems Administrator to own and evolve the systems that host our AI tooling and services. You will deploy, operate, and optimize Linux-based infrastructures ...

SBT Global, Inc.

Linux System Administrator

San Jose, CA · On-site

$6.50K/mo

... We are seeking a motivated System Administrator to support infrastructure operations and ... Linux systems (CentOS, Ubuntu, etc.) * Shell scripting, cron jobs, log analysis * User and group ...

JenaValve

QAD, System Administrator

Irvine, CA · On-site

$87.50K - $100K/yr

QAD, System Administrator Role Level: Individual Contributor (IC) Supervisor/Manager Title: Chief ... Experience with Progress/OpenEdge databases and Linux/Unix environments preferred. * Familiarity ...

Bowhead

Linux SME

Corona, CA

Responsibilities Install, configure, administer, and maintain Linux operating systems (RHEL, CentOS ... CKA) GIAC Certified UNIX Security Administrator (GCUX) SECURITY CLEARANCE REQUIREMENTS: Must ...

Collabera

Linux System Administrator

Monterey, CA

Provide Linux operating systems maintenance on HPC clusters, general systems and user support, and Cross Domain Security development and maintenance Responsible for improving the efficiency and ...

Chipton Ross

System Administrator

Sunnyvale, CA · On-site

Job #216485 Chipton-Ross is seeking a System Administrator for a contract opportunity in Sunnyvale ... Experience with Linux or Unix operating systems * Install operating system security patches and ...

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Linux Unix System Administrator information

See California salary details

$78.5K

$118.1K

$197.9K

How much do linux unix system administrator jobs pay per year?

As of May 30, 2026, the average yearly pay for linux unix system administrator in California is $118,067.00, according to ZipRecruiter salary data. Most workers in this role earn between $97,700.00 and $126,800.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Linux/Unix System Administrator, and why are they important?

To thrive as a Linux/Unix System Administrator, you need expertise in system installation, configuration, troubleshooting, scripting (such as Bash or Python), and a solid understanding of networking and security principles, often backed by a degree in computer science or a related field. Familiarity with tools like Ansible, Puppet, Nagios, and commonly used distributions, plus certifications such as RHCSA or CompTIA Linux+, is highly valued. Strong problem-solving, analytical thinking, and effective communication skills help administrators excel in managing systems and collaborating with technical teams. These competencies are essential to maintain robust, secure, and efficient server environments critical to business operations.

What are some common challenges faced by Linux Unix System Administrators, and how can they be addressed?

Linux Unix System Administrators often encounter challenges such as managing system uptime, applying timely security patches, and troubleshooting unexpected performance issues. Balancing routine maintenance with urgent incidents can be demanding, especially in environments with 24/7 operations. To address these challenges, administrators typically rely on automation tools, proactive monitoring, and clear communication within their IT teams. Staying current with documentation and best practices also helps streamline problem-solving and ensures system reliability.

What are Linux Unix System Administrators?

Linux Unix System Administrators are IT professionals responsible for installing, configuring, maintaining, and troubleshooting Linux and Unix-based servers and systems. They ensure that these systems run efficiently, securely, and reliably for users and applications. Their duties often include user account management, system updates, monitoring system performance, implementing security measures, and performing regular backups. They play a critical role in supporting business operations that depend on stable and secure computing environments.

What is the difference between Linux Unix System Administrator vs Network Administrator?

AspectLinux Unix System AdministratorNetwork Administrator
CertificationsLinux/Unix certifications (e.g., LPIC, RHCE)Network certifications (e.g., CCNA, CompTIA Network+)
Work EnvironmentServers, data centers, cloud platformsNetworking hardware, routers, switches, firewalls
Primary ResponsibilitiesManaging Linux/Unix servers, scripting, system securityConfiguring and maintaining network infrastructure
Industry UsageIT, data centers, cloud servicesTelecommunications, enterprise networks

The Linux Unix System Administrator focuses on managing and maintaining Linux and Unix servers, ensuring system security and performance. In contrast, the Network Administrator primarily handles network infrastructure, including routers and switches, to ensure reliable connectivity. Both roles require technical certifications and are vital in IT and enterprise environments, but they specialize in different aspects of technology infrastructure.

What are popular job titles related to Linux Unix System Administrator jobs in California? For Linux Unix System Administrator jobs in California, the most frequently searched job titles are:
What job categories do people searching Linux Unix System Administrator jobs in California look for? The top searched job categories for Linux Unix System Administrator jobs in California are:
What are popular job titles related to Linux Unix System Administrator jobs in CA? For Linux Unix System Administrator jobs in CA, the most frequently searched job titles are:
Linux Unix System Administrator jobs near you
Infographic showing various Linux Unix System Administrator job openings in California as of May 2026, with employment types broken down into 19% Full Time, 78% Part Time, 1% Contract, and 2% Nights. Highlights an 73% Physical, 3% Hybrid, and 24% Remote job distribution, with an average salary of $118,067 per year, or $56.8 per hour.
Linux System Adminstrator

Linux System Adminstrator

ASEC, Inc.

Ridgecrest, CA • On-site

$110K - $140K/yr

Full-time

Medical, Dental, Vision, Retirement

Posted 9 days ago

Job description

Location: NAWS China Lake, CA
Security Clearance Requirement: Top Secret
Telework Eligible? No, work will be performed on-site at NAWS China Lake
What You'll Do:
Support mission-critical Navy training systems at NAWS China Lake, CA!
As a Linux System Administrator, you will be responsible for ensuring secure configurations, producing accreditation artifacts, and maintaining hardened baselines - all with a focus on reliability and long-term system assurance. The ideal candidate is not only technically strong, but also thoughtful, process-oriented, and one who takes a careful, methodical approach to systems management.
Key Responsibilities:
  • Maintain and secure Linux operating system environments in compliance with DISA STIGs to support classified mission systems.
  • Plan, test, and implement system upgrades to ensure optimal performance and reliability.
  • Support RMF and ATO activities, including vulnerability scanning (ACAS, Evaluate STIG) and development of accreditation artifacts.
  • Integrate new software applications within complex, mission-critical environments.
  • Apply and maintain operating system security configurations in alignment with DISA STIG requirements.
  • Monitor Linux and virtualization platforms for availability, performance, and security to ensure mission continuity.
  • Identify and resolve system flaws, implementing technical controls to strengthen cybersecurity.
  • Conduct vulnerability scans and assessments to safeguard systems from potential threats.
  • Develop and release hardened RHEL templates on a quarterly basis, including documentation required for ATO submissions.
  • Utilizing tools such as Jira and Microsoft Teams in order to track trouble tickets.
  • Troubleshoot and resolve software issues within integrated environments to maintain seamless operations.
  • Ensure compliance with DoD RMF, FISMA, NIST 800-53, and DoD SRG requirements.

This description outlines the general nature and scope of the role. Additional duties may be assigned as necessary.
Requirements
What You'll Bring:
Required Qualifications:
  • Candidates must meet DoD 8140-M Intermediate level qualification requirements: BS degree in Information Technology, Cybersecurity, Computer Science, or related area of study, required. Candidates must also have a current Operating System certification (e.g., Linux+, Red Hat Certified System Administrator, etc.). At a minimum, CompTIA Security + CE will be required for this position. Please upload copies of any relevant IT certifications you hold.
  • 5 years of related system administration experience is preferred.
  • Strong working knowledge of vCenter/VMware is required.
  • Must have a deep level of knowledge and experience with Red Hat Enterprise Linux (RHEL).
  • Experience managing DoD Host Based Security Systems (HBSS) is preferred.
  • Demonstrated experience managing Domain Name System (DNS) performance and reliability.
  • Proven experience implementing and maintaining local and group policies.
  • Hands-on experience with Microsoft Active Directory (AD) domain controller servers for managing authentication, authorization, and network resources.
  • Knowledge of log aggregation and analysis across multiple sources.
  • Familiarity with the Red Hat Ansible Automation Platform.

Equally Important:
  • Ability to build positive, collaborative relationships across teams and with external partners.
  • Effective communicator with strong verbal and written skills.
  • Proactive, self-directed work style with the ability to operate independently.
  • Analytical thinker with proven problem-solving capabilities.
  • Highly organized, with the ability to balance competing priorities in a fast-paced environment.

ASEC is committed to providing access and reasonable accommodation in its services, activities, programs, and employment opportunities in accordance with the Americans with Disabilities Act and other applicable laws.
Security Clearance Requirement:
  • This position requires U.S. citizenship and an active DoD Top Secret clearance. Selected candidate will be subject to a government security investigation and must meet eligibility requirements for access to classified information.

Salary Range:
  • The anticipated annual salary range for this position is $110,000 - $140,000 annually, commensurate with an individual's experience, qualifications, and skill set. ASEC is committed to providing fair and equitable compensation. The low end of this salary range is accounting for a candidate that meets or exceeds all of the listed requirements.

Who We Are:
ASEC offers meaningful, mission-driven work within a culture that supports your professional and personal growth. We partner with our government customers to deliver innovative solutions across engineering, information technology, training, and logistics. Above all, we are committed to doing what's right for the Warfighter-plain and simple. Explore what makes ASEC different by visiting our website.
Why work at ASEC?
  • 100% employee-owned company. Learn more about our Employee Stock Ownership Plan (ESOP) here !
  • Comprehensive benefits package, including 11 paid holidays, medical/dental/vision coverage, HSA/FSA options, disability insurance, and more!
  • 401(k) with company match
  • Tuition assistance for undergraduate and graduate education
  • Veteran-friendly employer
  • Thriving employee culture

Not the right opportunity for you? Send this job posting to a friend!
ASEC is an Equal Opportunity Employer. We recruit, hire, train, compensate, and promote employees based on qualifications, merit, and business needs, without regard to race, color, religion, sex, national origin, ancestry, age, marital status, sexual orientation, gender identity or expression, disability, veteran status, genetic information, pregnancy or related conditions (including breastfeeding), or any other status protected by law.
ASEC also complies with all applicable pay transparency laws and will not discriminate against employees or applicants for inquiring about, discussing, or disclosing compensation.

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