Linux System Administrator, Senior

Booz Allen Hamilton; Maryland; On-site; USD 78,000 - 176,000; Full time

Job summary

Booz Allen Hamilton is seeking a Senior Linux System Administrator to install and maintain systems on dedicated infrastructure, ensuring availability and patching critical components. You will monitor performance and provide network insights to customers in a mission-critical environment.

The role requires 5+ years in systems administration, RHEL/CentOS experience, VMware ESXi, and DoD 8570.1 IAT Level II Certification within 60 days. A TS/SCI clearance is required; HS diploma or GED is needed.

Qualifications

• 5+ years of experience in systems administration.
• Experience with Red Hat Enterprise Linux or CentOS.
• Experience with managing virtual machines and VMware ESXi.
• Knowledge of Linux iptables, networking configuration, and DNS.
• TS/SCI clearance with a polygraph.
• HS diploma or GED.
• Ability to obtain DoD 8570.1 IAT Level II Compliant Certification within 60 days of start date.

Responsibilities

• Install systems on dedicated infrastructure, ensure the infrastructure is functional and available, and update and patch critical systems.
• Provide customers with insight into their network through monitoring and performance management.
• Identify problem areas and opportunities for improvement in a mission-critical network.
• Accomplish work without considerable direction.

Skills

Systems administration

Linux (RHEL/CentOS)

VMware ESXi

Networking (iptables, DNS)

DoD clearance (TS/SCI)

Education

HS diploma or GED

DoD 8570.1 IAT Level II Certification

Tools

AWS DevOps

CloudFormation

SaltStack

Ansible

Python

YAML

JSON

Job description

Linux System Administrator, Senior

The Opportunity

Install systems on dedicated infrastructure, ensure the infrastructure is functional and available, and update and patch critical systems. Provide customers with insight into their network through monitoring and performance management. Identify problem areas and opportunities for improvement in a mission-critical network. Accomplish work without considerable direction. Join us. The world can't wait.

You Have

• 5+ years of experience with systems administration
• Experience with Red Hat Enterprise Linux or CentOS
• Experience with managing virtual machines and VMware ESXi
• Knowledge of Linux iptables, networking configuration, and DNS
• TS/SCI clearance with a polygraph
• HS diploma or GED
• Ability to obtain DoD 8570.1 IAT Level II Compliant Certification within 60 days of start date

Nice If You Have

• Experience with AWS DevOps, Cloud Formation
• Experience with Infrastructure as Code (IaC), such as SaltStack or Ansible
• Experience with Python, YAML, or JSON
• DoD 8570.1 IAT Level II Compliant 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 with polygraph 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 $77,600.00 to $176,000.00 (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, whether it occurs in person or virtually. 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 facility frequently, in alignment with leadership expectations and the needs of the role. You may also be required to work from or visit a customer facility.

Onsite

If this position is listed as onsite, work will primarily be performed at a Booz Allen office or 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.

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.

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.

Know Your Rights Poster Accommodations

Applicants who need a reasonable accommodation for any part of the application, hiring, or employment process because of a disability, a sincerely held religious belief, practice, or observance, or as otherwise required by applicable law should contact the Booz Allen Help Desk by calling 1-877-927-8278 or sending an email to [e-mail].

We will review requests on an individualized basis and provide reasonable accommodations consistent with applicable law.

Data Privacy

For more information on how Booz Allen uses your information, please see our Careers Privacy Policy.