Linux Sys Admin​/DevOps Engineer; Systems Administrator

Requisition Number: 28850

Employment Type:

Full Time/Salaried/Exempt

Location:

Warren, MI – on‑site only
Travel: 0–10%
Salary Range: $65,592 – $90,000
Security Clearance:
Must obtain and maintain a Secret clearance (US citizen required)

HII Mission Technologies is hiring a Linux System Administrator/Dev Ops Engineer (Infrastructure Operations) to support Ground Vehicle Systems Center infrastructure. The role focuses on administering Red Hat Enterprise Linux (RHEL) systems in a DoD Risk Management Framework (RMF) environment, building and automating Linux‑based infrastructure for software development, build, and testing.

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

• 3 years of relevant experience with a Bachelor’s degree, or 1 year with a Master’s, or high school diploma with 7 years of experience
• Practical experience with Docker or OCI container ecosystems
• Administration of Linux systems in production or engineering environments
• Strong command‑line Linux administration skills (Ubuntu, RHEL, Rocky, Debian)
• Hands‑on Ansible automation experience
• Automation scripting in Bash and/or Python
• Familiarity with Git‑based infrastructure workflows
• Experience troubleshooting system, networking, and service‑level issues
• Experience managing systems via CLI without GUI tools
• Knowledge of systemd, networking configuration, storage/file systems, package management, SSH, and secure remote administration
• Ability to obtain and maintain a Secret security clearance and US citizenship required
• DOE requirement to be certified as a Linux administrator under DoD standards

• Existing Secret clearance
• Strong troubleshooting and root‑cause analysis skills
• Automation and repeatability mindset
• Ability to work independently with minimal supervision
• Effective collaboration with software engineers
• Hands‑on approach to building and maintaining infrastructure
• Experience with AWS and Terraform (desirable)
• Experience with Kubernetes (plus)

• Adequate visual acuity and manual dexterity for the role’s requirements

• Medical, dental, and vision plans
• Retirement savings plan (401(k))
• Paid holidays and paid time off
• Life insurance and tuition reimbursement
• Employee wellness resources and assistance programs
• Employee discounts and early‑childhood/post‑secondary education scholarships

All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, physical or mental disability, age, veteran status, or any other protected class under federal, state, or local law.

To request a reasonable accommodation for any part of the employment process, please email  or call 1‑844‑849‑8463 (press #3 for HII Mission Technologies).