Linux Systems Administrator, Senior

Booz Allen Hamilton; Florida; On-site; USD 62,000 - 141,000; Full time

Benefits offered by this job

Health benefits

Paid leave

Tuition assistance

Professional development

Retirement benefits

Job summary

Booz Allen Hamilton is seeking an experienced Linux systems administrator to operate and sustain enterprise RHEL and Ubuntu environments in a multi‑tenant setting. You’ll resolve incidents, onboard new systems, and drive patching and compliance.

The role requires TS/SCI clearance, DoD 8570 IAT Level II certification, and a strong ability to troubleshoot across OS, network, and storage layers in DoD DoW 8140 contexts.

Qualifications

• 12+ years of professional experience.
• 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.

Responsibilities

• Perform enterprise fleet O&M across multi‑enclave environments, including lifecycle sustainment for RHEL systems.
• Execute OS, configuration, service, and platform‑level incident resolution.
• Onboard newly deployed systems with post‑provisioning validation.
• Manage host compliance and quarterly patch cycles with STIG/CIS alignment.

Skills

Linux system administration

Troubleshooting

Multi‑tenant environments

Security clearance TS/SCI

Problem solving

Education

HS diploma or GED

DoD 8570 IAT Level II Certification

DoW 8140 Work Role Code 451

Intermediate Certification

RHCSA Certification

LPIC-2 Certification

Tools

RHEL

Ubuntu

Identity services tooling

Job description

The Opportunity:

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.

What You’ll Work On:

• 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.

You Have:

• 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.

Nice If You Have:

• 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.

Compensation

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 contract‑specific affordability and organizational requirements. The projected compensation range for this position is $61,900.00 to $141,000.00 (annualized USD). The estimate displayed represents the typical salary range for this position and is just one component of Booz Allen’s total compensation package for employees. This posting will close within 90 days from the Posting Date.

Identity Statement

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during interviews and assessments. We reserve the right to take your picture to verify your identity and prevent fraud.

Candidate AI Usage Policy

AI is a part of our daily work at Booz Allen, and we are committed to the responsible and ethical use of AI tools. However, we want to ensure a fair candidate process based on your own skills and knowledge. As part of this commitment, the use of artificial intelligence (AI) or other tools to assist with responses during interviews (whether in-person or virtual) is prohibited unless permission is explicitly provided.

Work Model

Our people‑first culture prioritizes the benefits of collaboration. To support engagement and effective communication, employees working virtually are generally expected to have their cameras on during meetings. Remote: If this position is listed as remote, there may still be occasions when you are required to work in person at a Booz Allen or customer facility. Hybrid: If this position is listed as hybrid, you will be expected to work from a Booz Allen or customer facility, in alignment with your leadership's expectations and the needs of the role. Onsite: If this position is listed as onsite, work will primarily be performed full‑time at a customer facility, where employees will collaborate directly with colleagues and customers as required by the role.

Commitment to Non‑Discrimination

All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local, or international law.

Commitment to Non‑Discrimination

All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local, or international law.

About Booz Allen

Booz Allen is an advanced technology company. We build commercial‑grade products and solutions for America’s most critical defense, civil, and national security priorities.

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