Principal Linux Administrator

RTX•El Segundo, CA
•$95,500 - $181,700•Onsite

About The Position

Provide IT systems administration in a heterogeneous Microsoft Windows and Red Hat Enterprise Linux environment supporting classified programs. The role includes provisioning, installation, configuration, operation, and maintenance of infrastructure systems and hardware and software, including server and storage management, cross-platform authentication and access management, backup and restoration, software and license configuration, and workstation support. The Principal Linux Administrator troubleshoots technical problems of moderate to high scope and complexity, leads Red Hat installation and configuration, designs and deploys Red Hat Podman containers, leverages automation, and supports engineering software installation throughout testing, documentation, and acceptance. The role collaborates with other teams and cybersecurity professionals, documents and trains others on advanced IT processes, and mentors junior Linux administrators. This is a full-time, 100% onsite position in El Segundo, California. Systems operate 24x7, and work beyond standard hours is occasionally required. An active, transferable U.S. government Secret clearance and U.S. citizenship are required before the start date. The employee must obtain a DoDD 8140/8570 certification (CompTIA Security+ CE or equivalent) within six months of starting.

Requirements

  • Typically, a university degree or equivalent experience and at least 5 years of relevant experience, or an advanced degree in a related field and at least 3 years of experience.
  • Active and transferable U.S. government-issued Secret security clearance required before the start date; U.S. citizenship is required.
  • Experience with technologies including Red Hat Enterprise Server, Active Directory, WSUS, VMware, backup solutions, systems administration, networking administration, Windows or Linux administration, and enterprise backup and recovery suites.
  • Experience with server architecture and troubleshooting methods, including assisting in developing solutions and documentation for technical problems.
  • Experience using VMware vCenter, vSphere, Linux desktops, Windows 10 or 11 desktops, Splunk, and ESX or other virtual computing methods.
  • Must obtain DoDD 8140/8570 certification requirements (CompTIA Security+ CE or equivalent) within six months of start date.

Nice To Haves

  • Active DoD Top Secret clearance, or ability to obtain one.
  • PowerShell or Bash scripting and automation experience.
  • DoDD 8140/8570 certification (CompTIA Security+ CE or equivalent) and an operating system certification.
  • Direct working experience with NISPOM, JAFAN, JSIG, DFARS, and/or DoD/RMF.
  • In-depth working experience with Linux servers.
  • Experience with data storage, NAS, and SAN technologies and solutions.
  • Experience supporting engineers in software, simulations, and hardware development.
  • Experience with Microsoft WSUS, SCCM, and/or Exchange.
  • High Performance Computing (HPC) experience in a Linux environment.

Responsibilities

  • Administer IT systems in a heterogeneous Microsoft Windows and Red Hat Enterprise Linux environment.
  • Troubleshoot technical problems of moderate to high scope and complexity, including hardware and operating system integration.
  • Mentor and coach junior Linux administrators.
  • Leverage automation technologies.
  • Lead and coordinate Red Hat installation and configuration.
  • Design, develop, and deploy Red Hat Podman containers.
  • Participate in all phases of engineering software installation and support, emphasizing testing, documentation, and acceptance.
  • Collaborate across teams and work with cybersecurity professionals to maintain security requirements.
  • Provide documentation and training on advanced IT processes and procedures.
  • Provision, install, configure, operate, and maintain Linux/Windows infrastructure hardware and software for classified programs.
  • Manage servers and logical and physical storage; support cross-platform authentication and access management, data backup and restoration, software and license configuration, and workstations.
  • Occasionally work beyond standard hours to support systems operating 24x7.

Benefits

  • Medical insurance
  • Dental insurance
  • Vision insurance
  • Life insurance
  • Short-term disability
  • Long-term disability
  • 401(k) match
  • Flexible spending accounts
  • Flexible work schedules
  • Employee assistance program
  • Employee Scholar Program
  • Parental leave
  • Paid time off
  • Holidays
  • Potential annual short-term and/or long-term incentive compensation
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