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Jr Linux System Administrator Jobs in Arizona (NOW HIRING)

Arete Associates

Linux Systems Administrator

Tucson, AZ · On-site

$85K - $125K/yr

We are seeking a mid-level Linux System Administrator to support multiple Department of Defense (DoD) programs focused on the design, installation, and configuration of cyber-compliant prototype and ...

Robert Half

Linux Systems Administrator

Phoenix, AZ · On-site

$80K - $85K/yr

We are looking for an experienced Linux Systems Administrator to support and strengthen the organization's infrastructure in Phoenix, Arizona. This position centers on Linux administration and ...

Geologics

Linux Administrator

Scottsdale, AZ

$70/hr

Role: Linux Administrator Client: Defense-Aerospace Hourly Rate: up to $70/hr (W2, non-benefited ... Implement system hardening, patching, and security configurations aligned with federal security ...

Geologics

Linux Administrator

Scottsdale, AZ · On-site

$70/hr

Role: Linux Administrator Client: Defense-Aerospace Hourly Rate: up to $70/hr (W2, non-benefited ... Implement system hardening, patching, and security configurations aligned with federal security ...

Geologics

Linux Administrator

Scottsdale, AZ

$70/hr

Role: Linux Administrator Client: Defense-Aerospace Hourly Rate: up to $70/hr (W2, non-benefited ... Implement system hardening, patching, and security configurations aligned with federal security ...

AMERICAN SYSTEMS

Linux Systems Administrator I

Phoenix, AZ · On-site

$61.32K - $95.68K/yr

As a Linux Systems Administrator I, you will provide support for our enterprise-level Linux-based ... Strong understanding of the Linux operating system, including the command line interface and basic ...

AMERICAN SYSTEMS

Linux Systems Administrator I

Phoenix, AZ

$61.32K - $95.68K/yr

As a Linux Systems Administrator I, you will provide support for our enterprise-level Linux-based ... Strong understanding of the Linux operating system, including the command line interface and basic ...

Acara Solutions

Linux Administrator

Scottsdale, AZ

$74.58/hr

Linux Administrator Location: Scottsdale, AZ Employment Type: Contract Industry: Defense ... In this role, you'll manage Linux systems, AWS cloud resources, and ServiceNow infrastructure while ...

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Jr Linux System Administrator information

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

To thrive as a Jr Linux System Administrator, you need a solid understanding of Linux operating systems, basic networking, and troubleshooting skills, often supported by a relevant degree or certification such as CompTIA Linux+. Familiarity with command-line tools, shell scripting, and configuration management systems like Ansible or Puppet is typically required. Strong problem-solving abilities, attention to detail, and effective communication are standout soft skills in this role. These skills ensure secure, efficient, and reliable system operations while facilitating teamwork and minimizing downtime.

What are some common challenges faced by Jr Linux System Administrators during their first year on the job?

Junior Linux System Administrators often encounter challenges such as mastering a variety of command-line tools, troubleshooting system and network issues, and managing time when responding to support tickets. Adapting to different Linux distributions and learning company-specific procedures can also be demanding. However, working closely with more experienced administrators and participating in team projects provides valuable hands-on learning and mentorship opportunities.

What does a Jr Linux System Administrator do?

A Jr Linux System Administrator is responsible for assisting in the installation, configuration, and maintenance of Linux operating systems and servers. Their duties often include monitoring system performance, applying updates and patches, managing user accounts, and providing support to users. They also help troubleshoot issues, ensure security compliance, and may assist with backup and recovery processes. This entry-level role typically works under the supervision of senior administrators and is ideal for those starting a career in system administration.

What is the difference between Jr Linux System Administrator vs Linux System Administrator?

AspectJr Linux System AdministratorLinux System Administrator
CertificationsEntry-level certifications (e.g., Linux+)Advanced certifications (e.g., RHCE, LPIC-2)
Experience1-2 years3+ years
Work EnvironmentSupport roles, basic troubleshootingServer management, complex troubleshooting
ResponsibilitiesAssist with installations, monitor systemsConfigure, optimize, and maintain Linux servers

The main difference between a Jr Linux System Administrator and a Linux System Administrator lies in experience, certifications, and scope of responsibilities. Jr roles are entry-level, focusing on support and basic tasks, while Linux System Administrators handle more complex system management and troubleshooting.

What cities in Arizona are hiring for Jr Linux System Administrator jobs? Cities in Arizona with the most Jr Linux System Administrator job openings:
Jr Linux System Administrator jobs near you
Infographic showing various Jr Linux System Administrator job openings in Arizona as of May 2026, with employment types broken down into 82% Full Time, 15% Part Time, and 3% Contract. Highlights an 100% Physical job distribution.
Linux Systems Administrator

Linux Systems Administrator

Rincon Research Corp

Tucson, AZ • On-site

$95K - $115K/yr

Full-time

Medical, Dental, Life, Retirement

Posted 21 days ago

Job description

Why Join Rincon Research Corporation (RRC)?

At Rincon Research Corporation, our primary business is innovating, developing, and fielding digital signal processing (DSP) products and services for the United States Defense and Intelligence Communities in support of national security.

Rincon Research Corporation (RRC), an employee owned company, is seeking a talented, tenacious, results-driven individual to work in a multi-disciplinary R&D environment with similarly motivated electrical engineers, mathematicians, computer scientists, and analysts who are collectively responsible for creating custom digital signal processing solutions and leveraging them to make an operational mission impact.

We are seeking a Linux-focused Systems Administrator who will assist in developing and supporting enterprise solutions as part of a collaborative team. In this role, you will contribute to Rincon’s evolving development infrastructure while gaining hands-on experience in systems administration.

Come join the team that is creating cutting edge signal processing and geolocation systems for the future!

What are the primary responsibilities in the Linux Systems Administrator position?

As a Linux Systems Administrator at Rincon, you will be responsible for assisting in building, maintaining, and creating solutions that support the modernization and improvement of services and infrastructure. As a member of a team, you will work to develop techniques, create solutions, and build services that directly support company-wide efforts and continuity. Tasks will include, but are not limited to:

  • Assist with deploying and managing Linux systems and services across multiple sites, leveraging automation and configuration management tools under team lead guidance.
  • Collaborate with senior administrators to support infrastructure projects and migrations—including upgrades, capacity improvements, and technology refreshes—with minimal disruption.
  • Participate in operational cycles, including patching, monitoring, maintenance, and performance optimization, ensuring required metrics for availability, security, and compliance are consistently met.
  • Contribute to documentation efforts, such as user guides, knowledge bases, and system maintenance records.
  • Follow established technical designs, processes, and procedures to maintain system standards.
  • Perform routine system health checks and assist in monitoring system performance, security, and availability, as well as supporting recovery events and backup/disaster recovery operations.
  • Learn and contribute to automation and scripting tasks, helping reduce manual effort by working with tools such as Ansible, Puppet, Terraform, and IaC frameworks.
  • Maintain lab environments in a clean, organized, and compliant state, ensuring they meet the set standard.

What required background will make you successful?

  • Active TS/SCI Security Clearance (US Citizenship Required)
  • A Bachelor's degree in Computer Science, Information Systems, Engineering, Business, or other related discipline. May be substituted for 5+ years of experience
  • Requires security certification in compliance with DOD 8570 within 90 days of hire
  • Requires professional certification in one or more areas within 6 months of hire
    • Examples include RHCSA, RHCE, CKA, CCNA

Preferred skills:

  • Knowledge of Linux systems and service administration (RHEL, Rocky, CentOS) with hands-on experience in remediation and patching.
  • Basic familiarity with configuration management and automation tools such as Ansible, Puppet, or Terraform, with an interest in learning Infrastructure as Code and Git practices.Understanding and some experience with enterprise storage platforms and supporting technologies such as SAN, NFS, iSCSI, block, and object storage.
  • Experience with virtualization platforms such as KVM and container platforms such as Docker.
  • Understanding of basic networking concepts and services (TCP/IP, DNS, DHCP, VLANs, Subnets) and ability to assist in troubleshooting connectivity issues.
  • Working knowledge of security compliance frameworks and how to apply them – including STIGs, DISA Benchmarks, CMMC, or CUI.
  • Some experience or a strong interest in learning scripting or programming, such as Bash or Python, to support automation, system tooling, and troubleshooting tasks.
  • Strong troubleshooting and problem-solving mindset, with a willingness to learn from senior administrators.

Where is the position located?

This position is located at our Tucson, AZ Headquarters.

*The likely salary range for this position is $95,000 to $115,000. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.

What benefits does RRC offer?

  • 100% employer-paid premiums for family medical and dental insurance, employee life insurance, short-term and long-term disability (STD & LTD)
  • Flexible reimbursement spending accounts for medical expense and dependent care
  • Immediate participation and vesting in the company’s Employee Stock Ownership Plan (ESOP) and 401(k) Plan
  • Employer contributions to RRC’s ESOP
  • Employer matching contributions to the company’s 401( k) Plan
  • Employer discretionary contributions to the company’s 401(k) Plan

Rincon Research Corporation is an equal opportunity employer and considers qualified applicants for employment without regard to race, color, creed, religion, national origin, sex, sexual orientation, gender identity and expression, age, disability, veteran status, or any other protected factor.