On-Site Linux System Administrator (DoD RMF)

Mission Technologies, a division of HII; Jackson (MI); On-site; USD 66,000 - 90,000; Full time

Benefits offered by this job

Medical, Dental, Vision benefits

401(k) Savings Plan

Paid time off & holidays

Tuition reimbursement

Employee discounts

Life insurance

Wellness resources

Employee assistance programs

Job summary

HII Mission Technologies is seeking a System Administrator to support the U.S. Army DEVCOM GVSC in Warren, MI. The role installs, configures, secures, and maintains Linux-based systems across mission operations, with focus on RHEL environments and DoD cybersecurity requirements.

On-site work is required. Responsibilities include monitoring, patching, account management, RMF compliance, and collaboration with cybersecurity teams to ensure reliability and availability of critical systems.

Qualifications

• 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.
• Experience administering Linux systems in production or enterprise environments; strong command-line Linux administration skills.
• Hands-on experience with enterprise Linux distributions (RHEL, Rocky, Ubuntu, Debian).
• Experience troubleshooting system, network, and service issues.
• Experience with systemd, storage and file systems, networking configuration, package management, SSH, and secure remote administration.
• Ability to meet DoD Linux administrator certification requirements.
• Ability to obtain and maintain a DoD Secret clearance (U.S. citizenship required).

Responsibilities

• Install, configure, and maintain Linux operating systems.
• Apply system updates, patches, and security configurations.
• Monitor system performance and take corrective actions.
• Troubleshoot hardware, software, and network issues.
• Maintain system documentation and configuration records.
• Perform account management and access control tasks.
• Support RMF compliance and system hardening requirements.
• Assist users with system access and operational issues.
• Ensure reliability and availability of mission-critical systems.
• Coordinate with cybersecurity teams on remediation and monitoring activities.

Skills

Linux administration

Command-line

RHEL

Rocky Linux

Ubuntu

Debian

Bash scripting

Python scripting

SSH

Kubernetes (basic)

Cloud environments (AWS)

Education

Bachelor's degree in related field

Master's degree in related field

High School Diploma or equivalent

Tools

RHEL

Rocky Linux

Ubuntu

Debian

Git workflows (plus)

Scripting (Bash/Python)

Job description

HII Mission Technologies is seeking a System Administrator to support the U.S. Army DEVCOM GVSC in Warren, MI. The role installs, configures, secures, and maintains Linux-based systems across mission operations, with focus on RHEL environments and DoD cybersecurity requirements.

On-site work is required. Responsibilities include monitoring, patching, account management, RMF compliance, and collaboration with cybersecurity teams to ensure reliability and availability of critical systems.