RHEL/Linux Systems Administrator — On-Site

Northrop Grumman; United States; On-site; USD 90,000 - 140,000; Full time

Job summary

Northrop Grumman in Gilbert, AZ is seeking a Computer Operations Analyst 2/3 - Linux Systems Administrator to provide server and systems administration in a Red Hat environment. This role requires strong Linux skills for a secure, on-site production environment.

You will manage user accounts, patching, SELinux, and scripting, with on‑call duties and collaboration across engineering and security teams.

Qualifications

• Master's degree with 0 years of experience; OR a Bachelor's Degree with 2 years of experience; OR an Associate's Degree with 4 years of experience; OR a High School Diploma (or equivalent) with 6 years of experience is required
• Experience administering Red Hat Enterprise Linux systems is required
• Must have a CompTIA A+, Network+, Security+, or Linux+ OR must have the th

Responsibilities

• Administer, monitor, and troubleshoot server systems supporting offnet/enclave environments behind a firewall.
• Understand and apply differences between domain‑joined high‑trust systems and off‑domain/standalone systems with local accounts and proper authentication.
• Perform routine system administration tasks: account creation, permissions, storage, backups, and performance monitoring.
• Troubleshoot hardware, OS, and application issues; perform root cause analysis and document resolutions clearly.
• Support physical server maintenance, including racking/unracking, cabling, and hardware swaps; lift up to 50 lbs.
• Maintain records in ServiceNow (or ITSM) including incidents, changes, assets; ensure SLAs.
• Support security compliance and vulnerability management activities using Tenable, Armis, and ArcherGRC.
• Provide on‑call/after‑hours support during production-impacting incidents and scheduled maintenance.
• Collaborate with engineering, security, and program teams to support IT initiatives across on‑net and offnet environments.
• Administer Red Hat Enterprise Linux (RHEL) servers, including user/group management, file systems (LVM), and package management (yum/dnf).
• Manage patching and content delivery through Red Hat Satellite Server, including content views, activation keys, and lifecycle environments.
• Configure and maintain SELinux, systemd services, and networking on RHEL hosts.
• Support Kickstart or other automated build/provisioning processes for RHEL deployment.
• Write and maintain shell scripts to support routine administrative and monitoring tasks.
• Ability to work independently on routine tasks
• Ability to lift equipment up to 50 lbs
• Support occasional on‑call/after‑hours work, as needed

Skills

RHEL administration

Shell scripting

System monitoring

Incident management

Education

Master's degree in CS/IS

Bachelor's degree in CS/IS

Tools

Red Hat Satellite

ServiceNow

Job description

Northrop Grumman in Gilbert, AZ is seeking a Computer Operations Analyst 2/3 - Linux Systems Administrator to provide server and systems administration in a Red Hat environment. This role requires strong Linux skills for a secure, on-site production environment.

You will manage user accounts, patching, SELinux, and scripting, with on‑call duties and collaboration across engineering and security teams.