• Location: Virginia
  • Type: Contract
  • Job #2696

Title: Systems Administrator                 
Location: Virginia
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government.  Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission.  Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems.  If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.

Position Description:      

  • (U) Demonstrated expertise managing Linux Servers (RHEL, CENTOS) in an enterprise environment.
  • (U) Demonstrated expertise using deterministic configuration management tools (Puppet, Ansible).
  • (U) System monitoring experience (memory, processes) via Linux command line (using commands such as top and ps).
  • (U) Demonstrated Linux troubleshooting skills (networking, file systems, repositories, configuration files, etc.) and ability to work with customers to identify and resolve issues.
  • (U) Demonstrated expertise provisioning and operating Linux servers or virtual machines in accordance with organizational compliance requirements.


  • (U) Experience scripting in Bash, Ruby or Python.
  • (U) Demonstrated expertise with Continuous Integration and Continuous Testing.
  • (U) Familiarization with VMWare and RAID configurations.
  • (U) Familiarization with DISA STIG, MITRE CVE list, NIST IAVA list and other security guidance.
  • (U) Certifications (any or all of the certifications listed):
  • (U) Red Hat Certified System Administrator.
  • (U) Red Hat Certified System Engineer.


Attach a resume file. Accepted file types are DOC, DOCX, PDF, HTML, and TXT.

We are uploading your application. It may take a few moments to read your resume. Please wait!