Linux Systems Administrator, Senior

AMERICAN SYSTEMS, a 100% employee-owned federal government contractor, is seeking a Senior Linux Systems Administrator with an active Top Secret clearance to support a mission-critical classified program at Naval Surface Warfare Center Crane Division, IN.

This role supports a secure, closed Linux enclave responsible for protecting and recovering highly sensitive mission data. The ideal candidate brings strong Red Hat Linux experience, enterprise system administration skills, and a desire to grow within a high-trust, technically complex environment.

As a Senior Linux Systems Administrator with AMERICAN SYSTEMS you will have the opportunity to do the following:

Administer and support Red Hat Linux systems in a classified, closed enclave

• Provide Tier II operational support for production and development environments

• Monitor system performance, storage capacity, and availability

• Review logs, validate backups, and support recovery operations

• Develop and maintain scripts using BASH and Python

• Manage users, groups, permissions, and local repositories per RMF requirements
• Support secure data transfers and automation workflows

• Author and maintain SOPs, SCTMs, and RMF documentation

• Collaborate with cybersecurity teams to maintain compliance

• Coordinate with geographically separated partner sites

• Recommend system, process, and architecture improvements

• Mentor junior administrators and support team development

• Active Top Secret clearance

• 5-7 years of Linux systems administration experience in enterprise or mission-critical environments

• Experience with Ansible, containerization (Podman/Docker), and OpenLDAP

• DoD 8140 IAT Level II certification (Security+ CE or equivalent)

• VMware vSphere 7.x+ experience

• BASH and Python scripting skills

• Working knowledge of PostgreSQL

• Ability to obtain RHCSA within six months of hire

NOTE: Although Red Hat certifications are a plus and considered favorably, qualified candidates without certifications are highly encouraged to apply.