Sr. RedHat Linux System Administrator

L3 Technologies   •  

Plano, TX

Industry: Aerospace & Defense


8 - 10 years

Posted 42 days ago

This job is no longer available.

Sr. RedHat Linux Systems Administrator supports growth in key proprietary business areas by performing design, configuration, maintenance and System Administration of Red Hat / CentOS Linux systems in a DoD classified setting.

You will demonstrate success by:

  • Architect / Implement, troubleshoot, upgrade and patch Linux systems
  • Build systems which make our rapidly growing infrastructure manageable and secure
  • Perform work in accordance with established IT & Security policies and procedures
  • Install upgrades to operating systems and layered software
  • Secure / harden the operating systems (firewalls, patching and SCAP)
  • Other duties as assigned

Our Values are an integral part of who we are. We seek candidates who share our values:

  • Integrity
  • Excellence
  • Accountability
  • Respect



  • Must be eligible to work for any employer in the US; Must have an existing DoD secret clearance with current 5 year update;Must be able to obtain additional clearances as required.
  • Bachelor's Degree in Science or Technology
  • Minimum 8+ yrs. of System Administration experience with Red Hat/CentOS Linux, including system design, configuration, maintenance, upgrade and administration
  • Set up classified hardware and software, implement configuration management, and conduct required audits. Secure / harden the operating systems (firewalls, patching and SCAP)
  • Proficient with automation software like puppet, chef, or ansible
  • Implement & manage Full Software Stacks (DB, Middleware, Web Servers & Load Balancers)
  • Perform work in accordance with established IT & Security policies and procedures
  • Ensure data/media recoverability through implantation of a schedule backup and archive system
  • RHEL Satellite design, configuration, maintenance, and administration
  • Able to create and execute python & shell scripts
  • VMware administration tools
  • Working with Container technology such as Docker
  • Expert usage of scripting using python and shells
  • Outstanding work ethic and commitment to organization success
  • Proficient with Microsoft Office products
  • Excellent communication skills (written, verbal, & presentation)
  • Security + certification or equivalent required within 6 months of employment
  • 5+ years experience with Windows Administration - Desired
  • Windows Server 2008 (or beyond) with Active Directory administration and troubleshooting -Desired
  • 5+ yrs leading IT projects or in IT Project Manager experience -Desired
  • Experience with Netapp and Atlassian tool suites -Desired
  • Linux +, RedHat (RHCE, RHCSA), LPI Certifications
  • Proficient with Microsoft Office products
  • Physical requirements include the ability to travel up to 25% and the ability to lift up to 25lbs.