Linux Systems Administrator, Senior

Booz Allen Hamilton•Usa, FL

12h•$61,900 - $141,000

About The Position

The Senior Linux Systems Administrator will operate and maintain clients’ Linux-based systems, providing enterprise fleet operations and maintenance across multi-enclave environments. The role includes lifecycle sustainment for RHEL systems and operational support for RHEL and Ubuntu, including troubleshooting, patching, compliance, and onboarding newly deployed systems. The administrator will resolve Tier 2 Linux support tickets, maintain system readiness across enclaves, and help absorb operational workload for Ubuntu and emerging containerized platforms. The position supports the Department of War and requires an active TS/SCI clearance. Applicants selected will undergo a security investigation and may need to meet eligibility requirements for classified access. Compensation is projected at $61,900 to $141,000 annually, based on factors including location, qualifications, experience, and organizational requirements. The posting is expected to close within 90 days of its posting date. Booz Allen offers health, life, disability, financial, and retirement benefits, paid leave, professional development, tuition assistance, work-life programs, dependent care, and recognition awards. Eligibility for benefit programs generally applies to regular full-time and part-time employees working at least 20 hours per week. The hiring process includes identity verification using biometrics and AI, and candidates are expected to be on camera during interviews and assessments. Use of AI or other tools to assist with interview responses is prohibited unless explicitly permitted. Work model details depend on whether the position is designated remote, hybrid, or onsite; no specific designation is provided in this posting.

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 or 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 operational onboarding of Ubuntu and emerging containerized platforms.
Provide operational support for Ubuntu and RHEL systems, including patching, troubleshooting, and lifecycle sustainment.
Perform operational 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 audit activities related to enclave synchronization.