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Linux Systems Administrator III - Secret

HRL
Malibu, California
Full Time
Posted May 23, 2025
$110k - $137k
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Job Description

A Linux Systems Administrator responsible for installing, configuring, maintaining, and troubleshooting multi-platform systems (Linux and Windows) in classified environments, ensuring security compliance, performance optimization, and supporting security audits within a government or defense setting.

Key Responsibilities

  • Install, configure, and maintain multiplatform systems hardware, software, and components
  • Administer and manage Windows and Linux systems in various environments
  • Maintain Linux servers and workstations
  • Perform system and user account management
  • Monitor, evaluate, and optimize system performance
  • Test, assess, and implement security patches and system hardening measures
  • Develop and promote standard operating procedures and conduct hardware and software audits
  • Troubleshoot and resolve complex system failures across hardware, software, and network components

Requirements

  • An active Secret security clearance and experience in classified programs is required.
  • Willingness to continue learning new technologies is a must.
  • Experience in Linux systems administration.
  • Understanding of multiplatform system hardening e.g., DISA STIG, SCAP.
  • Experience integrating Linux systems into an Active Directory environment.
  • Experience with Red Hat Enterprise Linux 8, 9.
  • Experience with Ubuntu Linux 20.04, 22.04.
  • Experience with scripting for task automation e.g., shell scripting, Python, Perl.
  • Experience with systems management and automation software e.g., Satellite, Foreman, Ansible.
  • Strong understanding of networking fundamentals e.g., switching, routing, firewalls, load balancing.
  • Experience with system monitoring alerting tools e.g., Nagios.
  • Ability to work independently.
  • Minimum of 7 years of experience in a related role is preferred.
  • An active Secret U.S. Security Clearance is required.
  • High School diploma or GED with 7 years of experience in a System Administration role or an equivalent combination of technical education and experience.
  • Must obtain DoD 8570.01-M IAT Level II or higher certification e.g., CompTIA Security , CySA , GICSP, GSEC, CISSP within 6 months of hire.
  • Physical ability to occasionally stand, climb, stoop, kneel, crouch, or crawl.
  • Ability to regularly lift and/or move up to 50 pounds.
  • This position is 100% on-site.
  • Responsibilities sometimes require working evenings and weekends, and with little to no advance notice.
  • Up to 10 travel is required.
  • U.S. citizenship is required.
  • Willingness to obtain and maintain a Top Secret SCI clearance with polygraph.

Benefits & Perks

Compensation salary range: 109,695 - 137,145
Bonus benefits
On-site work environment
Potential for working evenings and weekends
Up to 10 travel opportunities

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