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Independent Contractor Linux Administrator Jobs in California

Cystems Logic

Senior Systems Administrator

Irvine, CA · On-site

$92K - $125K/yr

Independently lead the technical execution of data center infrastructure projects from conception ... Manage a mixed Windows and Linux server environment, ensuring high levels of availability and ...

Axos Bank

Sr. Systems Engineer - Linux

San Diego, CA · On-site

$120K - $145K/yr

Administer vSphere, ESXi, and vCenter * Provision and manage Unix/Linux VMs and templates * Support ... We're a diverse team of dynamic, insightful, and independent innovators who are excited to provide ...

Axos Bank

Sr. Systems Engineer - Linux

San Diego, CA · On-site

$120K - $145K/yr

Administer vSphere, ESXi, and vCenter * Provision and manage Unix/Linux VMs and templates * Support ... We're a diverse team of dynamic, insightful, and independent innovators who are excited to provide ...

Foxconn Assembly LLC

System Administrator

San Jose, CA · On-site

Install, configure, maintain, and upgrade physical and virtual servers (Windows, Linux). Ensure ... independently and as part of a team. • Ability to prioritize tasks and manage time effectively in ...

Saalex

Journeyman Systems Administrator

Camarillo, CA · On-site

$125K - $150K/yr

Administer and maintain Windows and UNIX/Linux servers and supporting infrastructure. * Support RMF ... Ability to work independently and in a team environment. Desired: * Experience supporting RMF and ...

Saalex

Journeyman Systems Administrator

Camarillo, CA · On-site

$125K - $150K/yr

Administer and maintain Windows and UNIX/Linux servers and supporting infrastructure. * Support RMF ... Ability to work independently and in a team environment. Desired: * Experience supporting RMF and ...

New

Saalex

Journeyman Systems Administrator

Camarillo, CA · On-site

$125K - $150K/yr

Administer and maintain Windows and UNIX/Linux servers and supporting infrastructure. * Support RMF ... Ability to work independently and in a team environment. Desired: * Experience supporting RMF and ...

Antares

Systems Administrator

Los Angeles, CA · On-site

$85K - $120K/yr

Administer and maintain the Microsoft 365 environment, including Entra ID, Intune, Defender ... contracting, export-controlled, or other compliance-driven IT environments. * Experience with Linux ...

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All JobsIndependent Contractor Linux Administrator JobsIndependent Contractor Linux Administrator Jobs in California

Independent Contractor Linux Administrator information

What is the difference between Independent Contractor Linux Administrator vs Freelance Linux Engineer?

AspectIndependent Contractor Linux AdministratorFreelance Linux Engineer
CredentialsLinux certifications (e.g., RHCE, CompTIA Linux+)Linux certifications (e.g., RHCE, CompTIA Linux+)
Work EnvironmentClient sites, remote, or data centersClient sites, remote, or data centers
Employer/Industry UsageCompanies, IT service providers, government agenciesStartups, tech firms, consulting clients
Search/Comparison IntentFocus on contract work, specific Linux admin tasksFocus on project-based Linux engineering solutions

Both roles require similar Linux certifications and often work in remote or client environments. The main difference lies in the job focus: Independent Contractor Linux Administrators typically handle ongoing system administration, while Freelance Linux Engineers often work on specific projects or engineering tasks. Understanding these distinctions helps job seekers target the right opportunities based on their skills and career goals.

What are the most commonly searched types of Linux Administrator jobs in California? The most popular types of Linux Administrator jobs in California are:
What are popular job titles related to Independent Contractor Linux Administrator jobs in California? For Independent Contractor Linux Administrator jobs in California, the most frequently searched job titles are:
What cities in California are hiring for Independent Contractor Linux Administrator jobs? Cities in California with the most Independent Contractor Linux Administrator job openings:
Independent Contractor Linux Administrator jobs near you
Infographic showing various Independent Contractor Linux Administrator job openings in California as of August 2026, with employment types broken down into 67% Full Time, and 33% Contract. Highlights an 100% In-person job distribution.

Senior Systems Engineer - Linux - 26-016

Ausgar Technologies, Inc

San Diego, CA • On-site

Full-time

Re-posted 16 hours ago

Job description

JOB TYPE: FULL-TIME
MUST POSSESS A SECRET LEVEL SECURITY CLEARANCE; OR THE ABILITY TO OBTAIN ONE WILL TO BE CONSIDERED.
WE USE E-VERIFY TO ELECTRONICALLY CONFIRM THE EMPLOYMENT ELIGIBILITY OF NEWLY HIRED EMPLOYEES.
COMPETITIVE SALARY, COMPREHENSIVE BENEFITS AND A COMPANY THAT CARES!
AUSGAR Technologies, Inc., an equal opportunity employer, is an established, Service-Disabled Veteran-Owned Small Business (SDVOSB) Department of Defense, government contractor with core competencies in Information Assurance, Cybersecurity and Systems Engineering. With offices on both the East and West coasts, an inviting culture and above-standard benefits, opportunity abounds for the right individual!
Senior Systems Engineer - Linux - 26-016 - San Diego, CA
As a growing Department of Defense Contractor, AUSGAR Technologies has an exciting opportunity for a Senior Systems Engineer - Linux to join our team of smart and innovative technical team members at NIWC PAC - Bayside in the Point Loma area of San Diego, CA.
Position will support Advanced Oceanographic Research, Data Collection Systems and Secure Computing Infrastructure. We are seeking a Linux Systems Engineer & Cybersecurity Practitioner to join a multidisciplinary team of scientists, engineers and technicians developing advanced oceanographic data collection and processing systems.
Will provide technical leadership and hands-on support for Linux-based computing infrastructure used for research, engineering development and field operations. Responsibilities include system design, procurement, deployment, administration, user support, cybersecurity compliance and operation of data storage and network infrastructure.
The ideal candidate possesses strong Linux systems administration skills combined with practical experience implementing cybersecurity controls, system hardening, encryption technologies, PKI and Department of Defense (DoD) Information Assurance requirements.
Key Responsibilities:
  • Design, deploy, configure and maintain Linux servers, workstations, laptops, storage systems and supporting infrastructure.
  • Evaluate, procure, integrate and maintain computing, networking and data storage resources.
  • Administer RAID (Redundant Array of Independent Disks) storage systems, backup solutions and engineering data repositories.
  • Install and maintain network infrastructure including switches, routers, firewalls, wireless systems and air-gapped environments.
  • Deploy and support infrastructure services, including web servers, source code repositories, network file services, development toolchains, remote access systems, GitLab, OpenProject and related collaboration tools.
  • Provide direct technical support to scientists, engineers and technicians.
  • Implement and maintain Linux hardening standards, STIGs, encryption technologies, smartcard authentication, PKI services, TLS certificates and certificate revocation checking.
  • Work with Information Assurance personnel to maintain RMF compliance, accreditation artifacts and cybersecurity documentation.
  • Develop and maintain technical documentation, operating procedures and system configuration records.
  • Identify opportunities to improve reliability, security, maintainability and operational efficiency.

Requirements
The physical demands and work environment described here are representative of those that must be met by an employee to successfully perform the essential functions of the job. Reasonable accommodations may be made to individuals with disabilities to perform the essential functions.
  • Must possess a Secret level security clearance; or the ability to obtain one will be considered.
  • Completion of an accredited technical program or relevant military, professional or technical experience is preferred.
  • 5-8 years of Linux systems administration experience or equivalent combination of work experience and education.
  • Strong understanding of Linux/UNIX operating systems, networking and system architecture.
  • Experience supporting users in a networked Linux environment.
  • Ability to read, interpret and apply technical documentation.
  • Strong organizational, analytical and problem-solving skills.
  • Strong written and verbal communication skills.

Desired Qualifications:
Linux, Networking, and Infrastructure
Experience with:
  • Linux command-line administration, shell scripting, system performance analysis, package management and automation.
  • Tools including SSH, rsync, AWK, grep, vi/vim and systemd.
  • TCP/IP networking, IPv4/IPv6, firewalls, switches, routers and network troubleshooting.
  • Git, GitLab, Subversion, Samba, Python, virtualization technologies, backup systems and software or hardware RAID administration.

Information Assurance and Security
Experience with:
  • Linux hardening and Security Technical Implementation Guides (STIGs).
  • PKI, X.509 certificates, CAC/smartcard authentication, TLS/SSL, OCSP and CRL validation.
  • Data-at-rest encryption including LUKS and encrypted RAID systems.
  • LDAP, Active Directory integration, Kerberos, SSSD and PAM.
  • Vulnerability remediation, security compliance auditing and RMF compliance activities.
  • Operation of Linux systems in classified, controlled or air-gapped environments.

Domain Experience
Experience in one or more of the following areas:
  • Communications systems
  • Signal processing.
  • Industrial control systems
  • Real-time systems
  • Oceanographic systems
  • Scientific or engineering research environments

Preferred Qualifications:
  • Experience supporting DoD, Navy, federal government, or defense-contractor environments.
  • Experience implementing STIGs and maintaining RMF compliance documentation.
  • Experience administering GitLab, OpenProject, and related engineering collaboration platforms.
  • Experience supporting research, laboratory, testing, or prototype-development environments.
  • Experience with government procurement processes and regulations.

Salary Range: $150K-$165K
Based on your qualifications, you will be placed in Level I-V.
An essential qualification for this position is successfully obtaining a security clearance issued by the Federal Government, which may require successful completion of a background check.
We use E-Verify to electronically confirm the employment eligibility of newly hired employees.
AUSGAR's salary range is dependent upon a variety of factors, which include experience, skills, education, certifications and geographical location. Our salary range includes a base salary and excellent benefits package as part of our total compensation.
AUSGAR Technologies, Inc. is an equal opportunity employer. If you are a qualified individual with a disability or a disabled veteran and need assistance in completing the application, you have the right to request reasonable accommodation. Please e-mail us at jobs@ausgar.com if you are unable or limited in your ability to use or access www.ausgar.com careers page as a result of your disability.

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