Linux Systems Administrator, Senior

Your combination of people skills and system administrator knowledge makes you the team hero, solving one problem after another. What if you could use those skills to improve the technology supporting the DoW? We’re looking for a system administrator who specializes in Linux systems administration to help us operate and maintain our clients' Linux-based systems. We focus on growing as a team, so we’ll share techniques, work through challenges, and develop new methodologies together.

• Perform enterprise fleet O&M across multi‑enclave environments, including lifecycle sustainment for RHEL systems.
• Execute incident resolution, including troubleshooting OS, configuration, service, and platform‑level issues.
• Conduct post‑provisioning validation and onboarding of newly deployed systems.
• Manage host compliance through errata application, STIG and CIS alignment practices, and quarterly patch cycle execution.
• Perform vulnerability patching, remediation, and compliance verification across RHEL and Ubuntu systems.
• Perform directory integration validation and ensure correct binding of Linux hosts to identity services.
• Manage user and service accounts, ensuring proper onboarding, permissions, and lifecycle controls.
• Absorb operational workload associated with the onboarding of Ubuntu and emerging containerized platforms.
• Provide operational support for both Ubuntu and RHEL systems, including patching, troubleshooting, and lifecycle sustainment.
• Execute standard hygiene tasks such as log retention management, host health checks, and backup or restore verification.
• Maintain routine service and patching support across enclaves, ensuring consistent operational readiness.
• Resolve Tier 2 support tickets related to Linux platforms.
• Participate in patching windows for Linux systems and in audit activities related to enclave synchronization.

• 12+ 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 OS, network, storage, and platform layers.
• TS/SCI clearance.
• HS diploma or GED.
• DoD 8570 IAT Level II Certification.
• DoW 8140 Work Role Code 451.
• Intermediate Certification.

• Red Hat Certified System Administrator (RHCSA) Certification.
• ORLPIC-2 Certification.
• Clearance:
  Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information; TS/SCI clearance is required.

At Booz Allen, we celebrate your contributions, provide you with opportunities and choices, and support your total well-being. Our offerings include health, life, disability, financial, and retirement benefits, as well as paid leave, professional development, tuition assistance, work-life programs, and dependent care. Our recognition awards program acknowledges employees for exceptional performance and superior demonstration of our values. Full-time and part-time employees working at least 20 hours a week on a regular basis are eligible to participate in Booz Allen’s benefit programs.

Individuals that do not meet the threshold are only eligible for select offerings, not inclusive of health benefits. We encourage you to learn more about our total benefits by visiting the Resource page on our Careers site and reviewing Our Employee Benefits page. Salary at Booz Allen is determined by various factors, including but not limited to location, the individual’s particular combination of education, knowledge, skills, competencies, and experience, as well as…