Linux Systems Administrator — On-Site, Mission-Critical Ops

Amentum; Huntsville (TN); On-site; USD 95,000 - 135,000; Full time

Benefits offered by this job

Health insurance

401(k) matching

Educational reimbursement

Parental leave

Employee stock purchase plan

Tax-saving options

Disability and life insurance

Pet insurance

Job summary

Amentum is seeking a Mid-Level Linux System Administrator to support the Missile Defense Agency on the IRES contract at Redstone Arsenal, Huntsville, AL. You will administer Linux servers, patching, hardening, and automation using Ansible, with OpenShift container platforms in a secured environment.

Responsibilities include implementing secure baselines, scripting in Bash/Python, and managing virtualization with vCenter. Travel up to 10% and day shift are required; DoD clearance is mandatory.

Qualifications

• Must have 3+ years of Linux systems administration experience, including RHEL 7/8/9 environments.
• Experience with Linux configuration management, provisioning, and patching (e.g., Satellite, Ansible).
• Experience administering Linux in a virtualized environment (VMware vSphere/vCenter).
• Experience developing and executing Bash and/or Python scripts.
• Experience managing Linux authentication, identity management, and directory services (IdM/LDAP/SSSD/AD).
• Experience configuring core Linux networking services and storage (DNS, DHCP, NTP, SSH, LVM, NFS).
• DoD 8570/8140 IAT Level II cert or higher (e.g., CCNA-Security, CySA+, GICSP, GSEC, Security+).
• Active DoW Secret Security Clearance; ability to obtain Top Secret.

Responsibilities

• Administer Linux servers, workstations, and related systems.
• Manage patching and configuration with Satellite and Ansible.
• Perform OS hardening and DISA STIG compliance efforts.
• Deploy and automate environments using Bash/Python, Ansible, and vCenter.
• Maintain OpenShift containers and related repositories/registries.
• Ensure secure baselines for Linux and Windows environments.
• Coordinate secure data transfers per security protocols as Data Transfer Agent.
• Conduct daily monitoring, back-ups, restorations, and upgrades.

Skills

Linux system administration

Bash scripting

Python scripting

Virtualization (VMware vSphere/vCenter

OpenShift / container platforms

Education

RHCSA or RHCE certification (preferred)

DoD 8570/8140 IAT Level II certification

DoW Secret Security Clearance

Tools

Red Hat Satellite

Ansible

vCenter / VMware

OpenShift

SSSD / LDAP / IdM

DNS / DHCP / NTP

Job description

Amentum is seeking a Mid-Level Linux System Administrator to support the Missile Defense Agency on the IRES contract at Redstone Arsenal, Huntsville, AL. You will administer Linux servers, patching, hardening, and automation using Ansible, with OpenShift container platforms in a secured environment.

Responsibilities include implementing secure baselines, scripting in Bash/Python, and managing virtualization with vCenter. Travel up to 10% and day shift are required; DoD clearance is mandatory.