Linux Sys Admin, DevOps Engineer

Mission Technologies, a division of HII

Linux System Administrator/DevOps Engineer at HII Mission Technologies supporting infrastructure for software development. Join a team focused on advanced technologies in national defense.

Posted 6/4/2026full-timeWarren • Missouri • 🇺🇸 United StatesMid-LevelSenior💰 $65,592 - $90,000 per yearWebsite

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Hard Skills

DockerOCI container ecosystemsLinux system administrationAnsible automationBash scriptingPython scriptingsystemdnetworking configurationstorage and file systemspackage management

Soft Skills

troubleshootingproblem-solvingcommunication

Tools & Technologies

containersDev Environmentsbuild/test pipelinesGit-based workflowsCLI tools

Certifications & Qualifications

Linux admin certificationDoD security clearance

Industry Keywords

infrastructure as codeidempotent infrastructure automationoperational tasks automationservice-level issuesenterprise Linux distributions

Tech Stack

Tools & technologies

AnsibleDockerLinuxPython

About the role

Key responsibilities & impact

Document infrastructure
Debug complex systems interactions
Own end to end infrastructure
Containers and Dev Environments
Build and maintain container images
Debug containerized applications
Support build/test pipelines using containers
Understanding of container networking and storage
Automation & Infrastructure as Code
Write and maintain playbooks and roles
Build idempotent infrastructure automation
Automate operational tasks and diagnostics
Troubleshoot performance, service failures, and networking issues

Requirements

What you’ll need

3 years relevant experience with Bachelors in related field; 1 year relevant experience with Masters in related field; or High School Diploma or equivalent and 7 years relevant experience.
Practical experience with Docker or OCI container ecosystems
Experience administering Linux systems in production or engineering environments
Strong experience with Linux system administration from the command line
Strong hands-on experience administering enterprise Linux distributions (e.g., Ubuntu, RHEL, Rocky, Debian)
Hands-on experience with Ansible automation
Experience writing automation scripts in Bash and/or Python
Familiarity with Git-based workflows for infrastructure code
Experience troubleshooting system, networking, and service-level issue
Expereince managing systems via CLI without reliance on GUI tools
Expereinmce with: systemd, netwokring configuration, storage and file systems, package management, SHH and secure remote administrators
Needs to be able to be certified as an admin for Linux based on DoD requirements
Ability to obtain and maintain a secret security clearance with the US DoD (must be a US citizen in order to obtain a clearance with the US Gov)

Benefits

Comp & perks

best-in-class medical, dental and vision plan choices
wellness resources
employee assistance programs
Savings Plan Options (401(k))
financial planning tools
life insurance
employee discounts
paid holidays and paid time off
tuition reimbursement
early childhood and post-secondary education scholarships