Red Hat Linux Admin

*Active TS/SCI clearance (required at time of application; no sponsorship available). *3+ years of hands-on experience administering RedHat Enterprise Linux in an enterprise or DoD/IC environment. *Strong working knowledge of Linux system internals: boot process, systemd, networking, storage (LVM/RAID), and file systems. *Experience applying and maintaining STIG compliance and remediating vulnerabilities in a classified or regulated environment. *Proficiency with shell scripting (Bash) for automation of administrative tasks. *Experience with patch management and configuration management tools (Satellite, Ansible, Puppet, or similar). *Familiarity with virtualization platforms (VMware, vSphere, KVM) in an enterprise data center. *Understanding of security fundamentals: SELinux, firewalld, auditd, and access control. *Strong troubleshooting skills and ability to work independently in a fast-paced, mission-critical environment.