System Administrator

Phase2 Technology; Maryland; On-site; USD 99,000 - 225,000; Full time

Job summary

Booz Allen Hamilton seeks an experienced system administrator to secure and modernize our Windows and Linux environments in support of DoD missions. You will manage AD/DNS/DHCP, virtualization, and cross-functional collaboration to meet strict security and performance targets.

Applicants must have TS/SCI with polygraph and DoD 8140/8570 familiarity. Strong scripting and cloud experience are required. The role emphasizes reliability, documentation, and incident response.

Qualifications

• Experience with Windows and Linux system administration.
• Experience with cloud platforms such as AWS, Azure, GovCloud.
• Experience with virtualization such as VMware or Hyper-V.
• Experience with scripting (PowerShell, Bash, Python).
• Experience with networking fundamentals (TCP/IP, VLANs, routing, switches, firewalls).
• Experience with monitoring, logging, troubleshooting, and performance tuning.
• Experience supporting secure, classified environments.
• DoD 8140/8570 certification topics such as Security+, CySA+, CCNA, or CASP+.
• Bachelor’s degree or 15+ years of experience in lieu of degree.

Responsibilities

• Install, configure, secure, maintain, and optimize Windows and Linux OS.
• Maintain Active Directory, DNS, DHCP, PKI, and core services.
• Administer and support virtualization (VMware, Hyper-V).
• Maintain system documentation and baselines.
• Apply DoD cybersecurity requirements (STIGs, RMF, ACAS/Tenable).
• Provide Tier 1-3 support for server/storage/network issues.
• Monitor performance, uptime, and capacity; perform root cause analysis.
• Execute system patching, backups, and disaster recovery planning.
• Support integration of new technologies and upgrades.
• Collaborate with cybersecurity, network engineering, and software development.

Skills

Windows system administration

Linux system administration

AWS

Azure

GovCloud

PowerShell

Bash

Python

TCP/IP

VLANs

routing & switching

firewalls

log analysis

vulnerability remediation

Education

Bachelor's degree

Tools

VMware

Hyper-V

Active Directory

DNS

Job description

The Opportunity

Your combination of people skills and system administrator expertise makes you the team hero, solving one problem after another. We're looking for a system administrator with customer-facing experience in secure Windows and Linux environments to help us securely modernize our system and networking infrastructure.

What You'll Work On:

• Install, configure, secure, maintain, and optimize Windows and Linux operating systems.
• Maintain Active Directory, DNS, DHCP, PKI, and core enterprise services.
• Administer and support virtualized environments such as VMware, hypervisors, and virtual machines.
• Maintain system documentation, architecture records, and configuration baselines.
• Apply DoD cybersecurity and configuration management requirements including STIGs, RMF, and ACAS or Tenable.
• Provide Tier 1 support when needed, including help desk triage, ticket resolution, user assistance, and basic access troubleshooting.
• Provide Tier 2 and Tier 3 escalation support for complex issues affecting servers, storage, networks, and enterprise applications.
• Monitor system performance, uptime, and capacity; conduct root cause analysis and remediation.
• Execute system patching, updates, backups, restoration procedures, and disaster recovery planning.
• Support integration of new technologies, system upgrades, and enhancements.
• Work with cross functional teams including cybersecurity, network engineering, and software development.
• Maintain security posture through log analysis, auditing, access control enforcement, and vulnerability remediation.

You Have:

• Experience with cloud platforms such as AWS, Azure, or GovCloud
• Experience with Windows and Linux system administration
• Experience with virtualization using platforms such as VMware or Hyper-V
• Experience with scripting in PowerShell, Bash, or Python
• Experience with networking fundamentals, including TCP/IP, VLANs, routing and switching, and firewalls
• Experience with system monitoring, logging, troubleshooting, and performance tuning
• Experience supporting secure, classified environments
• TS/SCI clearance with a polygraph
• Bachelor's degree and 10+ years of experience with system administration, or 15+ years of experience with system administration in lieu of a degree
• DoD 8140 or 8570 Certification such as Security+, CySA+, CCNA, or CASP+ Certification

Nice If You Have:

• Experience with DevOps, automation tools and configuration management such as Ansible, Git, and CI/CD pipelines
• Experience with enterprise monitoring tools, including Splunk and Nagios
• Ability to operate independently in sensitive, fast-paced mission environments
• Ability to support senior technical and mission stakeholders
• Possession of excellent communication skills

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 $99,000.00 to $225,000.00 (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, and international law.