Sr. Linux Admin (TS/SCI)

Overview

On Site
$120,000 - $150,000
Full Time
No Travel Required

Skills

RHCSA
Python
Red Hat Certified Engineer
Red Hat Linux
Red Hat Enterprise Linux
Command-line Interface
Linux Administration
Linux

Job Details

We are seeking a highly skilled Senior Linux Administrator with expert-level command line proficiency to join our on-site team in San Antonio, TX. The ideal candidate will have deep experience managing and troubleshooting complex Linux environments in secure, mission-critical settings. This position requires an active Top Secret/SCI clearance and a strong understanding of system hardening, scripting, and enterprise-scale deployments.

Key Responsibilities:

  • Administer, configure, and maintain Linux systems (primarily RHEL/CentOS/Ubuntu) in a classified, high-availability environment
  • Perform advanced troubleshooting, performance tuning, and system diagnostics
  • Manage user accounts, file systems, access controls, and system patches
  • Automate routine tasks using shell scripting (Bash, Python, etc.)
  • Support system integration, testing, and implementation of new technologies
  • Monitor system health and ensure compliance with security standards (e.g., STIGs, DISA policies)
  • Collaborate with cybersecurity teams to maintain system integrity and apply security controls
  • Maintain documentation and contribute to standard operating procedures
  • Provide guidance and mentorship to junior administrators when necessary

Required Qualifications:

  • Active TS/SCI clearance (must be verifiable and current)
  • 3+ years of hands-on Linux system administration experience
  • Expert-level command line proficiency (Bash, Vim, system utilities, etc.)
  • Strong understanding of networking principles (TCP/IP, DNS, firewalls, etc.)
  • Experience with system hardening, patch management, and compliance frameworks
  • Proficient with automation and scripting tools (e.g., Bash, Python, Ansible)
  • Familiarity with virtualization (VMware, KVM) and enterprise storage solutions
  • Ability to work independently in a fast-paced, mission-focused environment

Preferred Qualifications:

  • DoD 8570 IAT Level II certification (e.g., Security+ CE, CCNA Security, etc.)
  • Experience with classified environments, SCIF operations, and related security protocols
  • Exposure to container technologies (Docker, Podman) or cloud environments (AWS GovCloud, etc.)
  • Red Hat Certified System Administrator (RHCSA) or Red Hat Certified Engineer (RHCE)

Work Environment:

  • On-site only must be available to work full-time in San Antonio, TX
Employers have access to artificial intelligence language tools (“AI”) that help generate and enhance job descriptions and AI may have been used to create this description. The position description has been reviewed for accuracy and Dice believes it to correctly reflect the job opportunity.