Linux Systems Administrator, Senior

Booz Allen Hamilton • MacDill AFB,FL,US, FL

1d • $61,900 - $141,000 • Onsite

About The Position

The Senior Linux Systems Administrator will operate and maintain client Linux-based systems in enterprise, multi-enclave environments, supporting both RHEL and Ubuntu platforms. The role includes lifecycle sustainment, incident resolution, system onboarding and validation, vulnerability remediation, compliance work, account administration, and routine operational readiness activities. The administrator will also support Ubuntu and emerging containerized platforms, resolve Tier 2 tickets, and participate in Linux patching windows and enclave synchronization audits.

Requirements

• 12 or more years of experience in a professional work environment.
• Experience administering enterprise RHEL and Ubuntu systems.
• Experience supporting multi-enclave or multi-tenant environments.
• Knowledge of vulnerability remediation frameworks, errata processes, and patch orchestration.
• Ability to troubleshoot complex issues across operating system, network, storage, and platform layers.
• TS/SCI clearance.
• High school diploma or GED.
• DoD 8570 IAT Level II Certification.
• DoW 8140 Work Role Code 451 Intermediate Certification.

Nice To Haves

• Red Hat Certified System Administrator (RHCSA) Certification.
• LPIC-2 Certification.

Responsibilities

• Perform enterprise fleet operations and maintenance across multi-enclave environments, including lifecycle sustainment for RHEL systems.
• Resolve incidents by troubleshooting operating system, configuration, service, and platform-level issues.
• Validate and onboard newly deployed systems after provisioning.
• Manage host compliance through errata application, STIG and CIS alignment practices, and quarterly patch cycles.
• Patch and remediate vulnerabilities and verify compliance across RHEL and Ubuntu systems.
• Validate directory integration and ensure Linux hosts are correctly bound to identity services.
• Manage user and service accounts, including onboarding, permissions, and lifecycle controls.
• Support onboarding and operational workloads for Ubuntu and emerging containerized platforms.
• Provide patching, troubleshooting, and lifecycle sustainment for Ubuntu and RHEL systems.
• Perform routine hygiene tasks, including log retention management, host health checks, and backup or restore verification.
• Maintain routine service and patching support across enclaves to ensure operational readiness.
• Resolve Tier 2 support tickets related to Linux platforms.
• Participate in Linux system patching windows and audits related to enclave synchronization.

Benefits

• Health, life, disability, financial, and retirement benefits.
• Paid leave.
• Professional development.
• Tuition assistance.
• Work-life programs.
• Dependent care.
• Recognition awards for exceptional performance and demonstration of company values.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: High school or GED