SYSTEMSADMINISTRATOR(LINUX)

Amentum is seeking a **Systems Administrator (Linux)** for a position in Kauai, HI. The position provides Windows or Red Hat Enterprise Linux (RHEL) system administration for all Clients and Servers connected to the Pacific Missile Range Facility (PMRF) classified and unclassified networks. Deploys Cyber Security mandated system upgrades, system patches, and system security lockdown requirements. Performs system wide troubleshooting and problem resolution in a live mission environment. **Responsibilities** * Administer and maintain Red Hat Linux (RHEL) and other Linux-based environments in classified and unclassified environments across Navy networks. * Implement and maintain RMF security controls and ensure systems are compliant with DISA STIGs and DoD cybersecurity policies. * Apply and manage patches and updates across all Linux systems in accordance with DoD and Navy patch management policies. * Manage automated installation methods and system imaging (e.g., SCCM, VMware, Nutanix, Satellite, Ansible) * Perform system hardening, patching, and vulnerability remediation using tools such as ACAS, ESS, and SCAP. * Develop and maintain PowerShell scripts for automation of administrative tasks and system configuration. * Support virtualization platforms (VMware, Hyper-V) and manage virtual infrastructure lifecycle. * Collaborate with cybersecurity teams to support ATO packages, POA&Ms, and audit readiness. * Maintain system documentation, configuration baselines, and standard operating procedures (SOPs). * Participate in Change Control Boards (CCBs) and Configuration Management Boards (CMBs). * Assist with incident response, forensic analysis, and system recovery efforts. * Support backup and disaster recovery strategies using enterprise tools (e.g., Veeam, Commvault). * Evaluate and recommend new Linux technologies and DoD-approved tools. * Perform other duties as assigned. **Additional Responsibilities** * General office environment with site visits as well as period