System Administrator

Booz Allen Hamilton; San Antonio (TX); On-site; USD 62,000 - 141,000; Full time

Job summary

Booz Allen Hamilton in San Antonio, TX, is seeking a System Administrator to maintain mission‑critical infrastructure, ensure security, and keep systems available. You’ll administer Windows environments, patch, troubleshoot, and perform lifecycle activities across enterprise IT.

You will monitor metrics, logs, and vulnerabilities to provide actionable insights, mentor teammates, and explore modern approaches such as RMF, cloud, and virtualization to strengthen the environment for DoD missions.

Qualifications

• 2+ years of IT, systems administration or cybersecurity experience.
• Experience administering Windows Server and Windows workstations.
• Experience with AD, Group Policy, and access controls.
• Experience with enterprise network troubleshooting and RMF/NIST controls.
• Top Secret clearance and DoD 8570 IAT II certification.

Responsibilities

• Provide system administration, maintenance, upgrades, patching, troubleshooting.
• Support lifecycle activities across enterprise IT environments.
• Monitor metrics, logs, and vulnerabilities to inform improvements.
• Mentor team members and share best practices for secure, reliable systems.

Skills

IT experience

Windows Server administration

Cybersecurity awareness

Education

Bachelor's degree

DoD 8570 IAT Level II Certification

Tools

Palantir

Active Directory

Group Policy

RMF/NIST SP 800-53 controls

Job description

System Administrator

The Opportunity: As a system administrator on our project, you’ll ensure mission-critical infrastructure and systems remain secure, functional, and available while identifying opportunities to improve system performance, reliability, and security. You’ll support system administration, maintenance, upgrades, patching, troubleshooting, and lifecycle activities across enterprise IT environments. You’ll provide your customers insight into their network and systems through monitoring, analysis, and performance management. Your system administrator expertise will be vital as you identify problem areas and opportunities for improvement across mission-critical systems and network infrastructure. You’ll help your team better understand the environment by turning system metrics, audit logs, vulnerability data, and performance information into actionable insights and explaining their meaning. This is an opportunity to broaden your skillset into areas like cybersecurity compliance, RMF, cloud computing, virtualization, and enterprise infrastructure modernization. We focus on growing as a team, so you’ll share your expertise through leadership and mentoring as you help the team work through technical challenges and develop new methodologies. As a system administrator, you’ll identify new opportunities to modernize and secure the environment so your clients can achieve their mission goals. Work with us and resolve daily challenges as we improve the reliability, security, and effectiveness of technology supporting critical DoD missions. Join us. The world can’t wait.

You Have:

• 2+ years of experience supporting IT, systems administration, cybersecurity, or enterprise technology environments
• Experience administering, maintaining, and troubleshooting Windows Server and Windows workstation environments
• Experience with Palantir, Active Directory, Group Policy, user account administration, permissions, and access controls
• Experience troubleshooting enterprise LAN/WAN, server, workstation, and network infrastructure issues
• Experience implementing cybersecurity requirements, including STIGs, vulnerability remediation, RMF, or NIST SP 800-53 security controls
• Top Secret clearance
• Bachelor's degree
• DoD 8570 IAT Level II Certification

Nice If You Have:

• Experience supporting DoD enterprise systems, mission‑critical systems, or classified environments
• Experience with Cisco routing and switching, VMware virtualization, and enterprise network infrastructure
• Experience supporting RMF documentation, ATO readiness, security hardening, and vulnerability management activities

Clearance: Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information; Top Secret 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.

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.

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