Senior Linux Engineer - DoD Secret Clearance

Overview

• Must be a Colorado Springs resident.
• Must have an active DoD Secret Security Clearance.
• Must have 14+ years of IT experience, including 6+ years of Linux server management.
• Must hold current Security+ CE and Linux certifications.

• Install, configure, and maintain Linux servers (Red Hat, CentOS) in physical and virtual environments (VMware, RHV, Azure).
• Apply security hardening based on DISA STIGs, NIST, and DoD policies.
• Perform patching, upgrades, and vulnerability remediation.
• Monitor performance, troubleshoot issues, and optimize configurations.
• Create and maintain documentation, SOPs, and diagrams.
• Configure and maintain cybersecurity tools such as Arc Sight, Elastic, ACAS, and Trellix EPP.
• Troubleshoot technical and integration issues with security tools.
• Develop scripts and automation using Bash, Python, or Ansible.
• Collaborate with security analysts on incident investigations.
• Support security audits and ensure DoD compliance.
• Develop and enforce security policies and procedures.
• Provide mentoring and technical guidance to junior engineers.
• Participate in on-call rotation for after-hours support.

• 14+ years of IT experience (reduced with advanced degree).
• 6+ years of Linux server management experience.
• Experience with system hardening and Linux security best practices.
• Hands‑on experience with Ansible or Puppet.
• Experience with VMware, KVM, or RHV virtualization.
• Willingness to work during after‑hours maintenance windows.
• Current IAT Level II certification (Security+ CE).
• Current Linux certification (RHCSA, RHCE, or LPIC).
• Ability to maintain a restricted badge and work on‑site 4+ days per week.
• Active DoD Secret Security Clearance.

• Experience with Arc Sight, Elastic, ACAS, or Trellix EPP.
• Experience with MySQL or PostgreSQL.
• Experience with Docker or Kubernetes.
• Proficiency in Bash, Python, or Perl scripting.
• Familiarity with MDA or BMDS programs.