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L3Harris Technologies

Global defense contractor delivering aerospace tech

Linux Administrator Senior Specialist - Systems Administration 1

System AdministrationUpdated on Nov 10
Full-timeTulsa, OK, USANo salary listed

About the Job

Requirements

  • A bachelor's degree and at least 6 years of prior relevant experience, or a graduate degree and at least 4 years of prior related experience; 10 years of prior related experience may substitute for a degree.
  • At least 8 years of experience with Red Hat Linux administration, networking (TCP/IP, network interfaces, and subnets), shell scripting, troubleshooting, and cybersecurity practices including patch management, STIG compliance, and system accreditation.
  • Current active Secret security clearance.

Responsibilities

  • Administer and maintain Red Hat Linux servers and workstations.
  • Ensure compliance with computer security policy, including NIST 800-53 and DISA STIGs.
  • Respond to support tickets and interface with users.
  • Develop and monitor policies and standards, and create documentation related to the use of computing resources.
  • Work with business and program leadership to evaluate vendor products and recommend hardware and software.
  • Provide managerial support to the on-site system administration team, including performance evaluations and budget management.
  • Maintain a mixed Windows and Linux system environment, perform system patching and STIG hardening, deploy systems using automation tools, and provide desktop-level end-user support.
  • Communicate technical concerns and solutions to management and program engineering teams, and lead local IT projects.

Desired Qualifications

  • CompTIA Security+, CISSP, or another DoD 8140-approved certification.
  • Ability to work independently with minimal direction.
  • Willingness to train and adapt to new technologies.
  • Ability to collaborate with team members.
  • Interpersonal skills for working with direct reports, users, and business or program management.
  • Experience with LDAP, VMware, Citrix, Centrify, or VDI.
  • Experience authenticating RHEL logins to Active Directory.
  • Experience with automation and enterprise deployment tools such as Satellite, Ansible, and Kickstart.
  • Knowledge of storage appliances such as NetApp.
  • Familiarity with backup concepts and solutions such as CommVault.
  • Working knowledge of Samba and NFS.

About the Company

L3Harris Technologies

Global defense contractor delivering aerospace tech

L3Harris Technologies provides advanced aerospace, defense, and space systems for governments and commercial customers. Its products include sensors, communications, and propulsion—such as tactical radios, night-vision gear, satellite payloads, missile defense, and space propulsion—delivered as integrated systems for operations across air, land, sea, space, and cyber domains. The company blends legacy technologies from two joining giants with newer capabilities, faster acquisition cycles, and a focus on missiles, space, and resilient communications to field solutions quickly. Its goal is to be a trusted, scale-ready provider of next‑generation defense and intelligence capabilities for national security and related customers.

Company size
10,001+
Company stage
IPO
Headquarters
Melbourne, FL
Founded
1895

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