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# Linux System Administrator (TS/SCI with CI Poly Required)

- **Company:** DeNOVO Solutions
- **Location:** Denver, CO, United States
- **Experience:** Expert
- **Salary:** $115,000.0 - $155,000.0
- **Contract:** Permanent contract
- **Skills:** Testing (Software), Bash Shell, Configuration Management, CompTIA Security+, Cyber Security, System Configuration, Linux, Perl (Programming Language), Monitoring of Systems, Networking Hardware, Python (Programming Language), Linux System Administration, Red Hat Enterprise Linux, Ansible, Security Content Automation Protocol, Systems Integration, Virtualization Technology, Software Vulnerability Management, Scripting, DevOps Tools - Open-source, Infrastructure as Code (IaC), Gitlab-ci, Infrastructure Automation Frameworks, Information Technology, Deployment Automation, Network Server, Jenkins, Vmware
- **Published:** October 31, 2026
- **Apply:** https://www.careerbuilder.com/job-details/linux-system-administrator-ts-sci-with-ci-poly-required-aurora-co--eb3a235c-e809-4ec0-a7c0-48ee04d659f5

## About the Role

Linux Administration, Sensitive Compartmented Information (SCI), Top Secret Clearance, Linux Administration, Sensitive Compartmented Information (SCI), Top Secret Clearance, Linux Operating System, Red Hat Linux Operating System, Identify Issues, Government, * Operating Systems: Red Hat Enterprise Linux (RHEL), Linux

 * Automation & Configuration Management: Ansible, Infrastructure as Code (IaC)
 * Scripting (preferably): Bash, Python, Perl
 * Virtualization & Infrastructure (preferably): VMware, Dell Servers, SAN Storage, Networking
 * Security & Compliance (preferably): DISA SCAP, STIGViewer, System Hardening
 * DevSecOps Tools (preferably): GitLab CI/CD, Jenkins

What You Need:

 * Experience: Ten (10) or more years of professional experience in Linux systems administration, infrastructure engineering, or related technical environments.
 * Strong experience administering, configuring, and troubleshooting Linux systems, including RHEL.
 * Knowledge of Ansible playbooks and Infrastructure as Code (IaC).
 * Experience supporting enterprise infrastructure, system deployments, and integration activities.
 * Education: Bachelor''s degree in Computer Science, Engineering, Information Technology, or a related field, or equivalent professional experience.
 * Certifications: Active CompTIA Security+ certification required.
 * Clearance: Active TS/SCI with CI Polygraph.

## Description

DeNOVO Solutions is seeking an experienced Linux System Administrator to support the administration, maintenance, and modernization of mission-critical infrastructure supporting our EOS Team. This position requires a strong background in Red Hat Enterprise Linux (RHEL), system administration, infrastructure automation, and troubleshooting within secure government environments. You''ll collaborate with engineers and technical teams to maintain reliable systems, improve operational efficiency, and support national security missions.

Why You''ll Love This Role:

 * Mission-Critical Infrastructure: Support secure Linux environments and enterprise systems directly contributing to national security operations.
 * Modern Technologies: Work with Red Hat Enterprise Linux, Ansible, Infrastructure as Code (IaC), virtualization, and automation tools.
 * Technical Collaboration: Troubleshoot complex infrastructure challenges, support system integration, and collaborate with experienced engineers and mission stakeholders.

A Day in the Life:

 * Linux Administration: Install, configure, maintain, and troubleshoot Red Hat Enterprise Linux (RHEL) systems and supporting infrastructure.
 * Automation: Utilize Ansible, Infrastructure as Code (IaC), and scripting to automate deployments and improve system management.
 * Infrastructure Support: Maintain servers, network devices, and enterprise infrastructure while supporting virtualization and system integration.
 * Security & Compliance: Support Linux system hardening, vulnerability remediation, and government security compliance requirements.
 * Troubleshooting & Testing: Resolve escalated technical issues, monitor system performance, and support software testing and operational acceptance.
 * Technical Collaboration: Mentor team members, maintain technical documentation, and assist engineers with deployments and integration efforts.