Senior Systems Administrator (Linux)

PAE Government Services Inc.; Kekaha (HI); On-site; USD 135,000 - 150,000; Full time

Benefits offered by this job

Health, dental, and vision insurance

Paid time off and holidays

Retirement benefits (including 401(k)"

Educational reimbursement

Parental leave

Employee stock purchase plan

Tax-saving options

Disability and life insurance

Pet insurance

Job summary

Amentum seeks an experienced Linux Administrator to manage RHEL and related Linux environments across Navy networks, ensuring RMF compliance and patch management per DoW policies. You will implement imaging, hardening, and vulnerability remediation using ACAS/ESS/SCAP while supporting virtualization, backup, and disaster recovery.

You will mentor junior staff, participate in CCBs/CMBs, and collaborate with cybersecurity to maintain outstanding audit readiness.

Qualifications

• Two years of System Administration/IT experience.

Responsibilities

• Administer and maintain Red Hat Linux (RHEL) and other Linux-based environments across Navy networks.
• Implement and maintain RMF security controls and ensure compliance with DISA STIGs and DoW cybersecurity policies.
• Apply and manage patches and updates across all Linux systems per DoW and Navy policies.
• Manage automated installation methods and system imaging (SCCM, VMware, Nutanix, Satellite, Ansible).
• Perform system hardening, patching, and vulnerability remediation using ACAS, ESS, and SCAP.
• Develop PowerShell scripts for automation of admin tasks and system config.
• 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, baselines, and SOPs.
• Provide mentorship to junior admins and IT staff.
• Participate in CCBs and CMBs.
• Assist with incident response, forensic analysis, and system recovery.
• Support backup and disaster recovery using Veeam, Commvault.
• Evaluate and recommend DoW-approved Linux technologies to improve performance and security.
• Perform other duties as assigned.

Skills

Automation scripting

PowerShell

Bash

Python

RHEL administration

Windows administration

Education

Bachelor's Degree

Tools

VMware

Nutanix

SCCM

Satellite

Ansible

ACAS

ESS

SCAP

Trellix

LogRhythm

MDE

Veeam

Commvault

Job description

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 DoW cybersecurity policies.
• Apply and manage patches and updates across all Linux systems in accordance with DoW 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).
• Provide mentorship to junior administrators and IT support staff.
• 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 DoW‑approved tools to improve system performance and security.
• Perform other duties as assigned.

Physical Elements/ Environment

• Lifting, Pushing/Pulling: 25 -50lbs
• Work positions requirements: walking, standing, crawling, kneeling, cramped, sitting and work requiring repeated stooping or frequent climbing.
• Environment: customer contact, extended workday, confined work area, office laboratory, field assignment, and inclement weather.

Minimum Qualifications

• Experience: Two (2) years of System Administration/IT experience
• Advance certifications may be substituted for a degree or experience
• Proficiency in automation tools and scripting (e.g., PowerShell, Bash, Python)
• VMware/Nutanix certification
• Knowledge/Administration of Trellix, LogRhythm, and MDE
• Experience with DoW systems and infrastructure
• Knowledge of Cyber Security Methods and Techniques
• Knowledge of DoW IT systems, to include Windows, RHEL, and comprehensive infrastructure concepts
• Education: Bachelor's Degree
• High School or equivalent with eight (8) years of system administration experience may be substituted for a bachelor’s degree.

Certifications

• DoD 8570/8140 IAT II Red Hat Certified System Administrator (RHCSA) certification

Preferred Qualifications

• Advance knowledge and certification in both Windows Server and RHEL is considered highly desired

Security Clearance

Must be able to obtain and maintain a Top Secret US Government Clearance. Note: US Citizenship is required to obtain and maintain a Top Secret Clearance.

Applicants selected either must currently possess a Top Secret clearance or will be subject to a US Government Security Investigation and must meet eligibility requirements to obtain clearance prior to commencement of employment and maintain a security clearance for access to classified information or Closed/Restricted Areas throughout duration of employment.

Compensation Details

$135K - $150K

The compensation range or hourly rate listed for this position is provided as a good‑faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits Overview

• Health, dental, and vision insurance
• Paid time off and holidays
• Retirement benefits (including 401(k) matching)
• Educational reimbursement
• Parental leave
• Employee stock purchase plan
• Tax‑saving options
• Disability and life insurance
• Pet insurance

Positions governed by a Collective Bargaining Agreement (CBA), the McNamara‑O’Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.

Original Posting

Original Posting: 10/20/2026 - Until Filled

Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

Equal Opportunity Employer

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low‑income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law.

Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.

Accommodations

If you need a reasonable accommodation for any part of the employment process, please complete our Accommodation Request. Requests for accommodation will be considered on a case‑by‑case basis.