Systems Administrator; LINUX Security Clearance

Position: SYSTEMS ADMINISTRATOR (LINUX) with Security Clearance
Location: Waimea

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 Power Shell 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 periodic "at sea" duty to support the PMRF's Mobile at Sea Sensor system (MATSS)
* Candidate must be capable of working in a team environment and participate in technical and system administrative activities throughout project life cycles.
* Lifting/Pulling/Pushing:
Over 50 lbs. (two-men assist)
* Positions: walking or standing, crawling, kneeling, cramped, and work requiring repeated stooping, sitting, and/or frequent stair climbing
* Environmental:
Customer Contact, Extended Workday, Confined Work Area, Office Laboratory, Field Assignment, Inclement Weather.

Minimum Qualifications
* BS/BA in Business, IT, or relevant field. Eight years of directly related work experience may be substituted for a degree.
* Three years of System Administration/IT experience
* Advance certifications may be substituted for a degree or experience.
* Knowledge of IT systems and advance IT infrastructure concepts
* Must be proficient in operating personal computers, computer software and standard office equipment
* Must have basic keyboarding skills and aptitude for neatness and accuracy in sorting
* Critical thinking - Proven problem solver Required Training, Licenses and

Certifications:

* DOD 8570.1M IAT Level II required prior to start
* Linux+ or Red Hat Certified System Administrator (RHCSA) Certification required prior to start

Preferred Qualifications
* Advance knowledge and certification in both Windows Server and RHEL is considered highly desired
* Proficiency in automation tools and scripting (e.g., Power Shell, Bash, Python)
* VMware/Nutanix certification
* Knowledge/Administration of Trellix, Log Rhythm, and MDE
* Experience with DoD systems and infrastructure
* Knowledge in Cyber Security Methods and Techniques
* Knowledge of DoD IT systems, to include Windows, RHEL, and comprehensive infrastructure concepts Security Clearance Top Secret security clearance is required with T5 or equivalent (SSBI) investigation level. Applicants selected must be a US Citizen to apply for a Secret Security Clearance. Applicants selected either must currently possess a Secret clearance or will be subject to a government security investigation and must meet eligibility…