System Administrator

Booz Allen Hamilton; Annapolis, Northern (MD, KY); Hybrid; USD 99,000 - 225,000; Full time

Job summary

Booz Allen Hamilton is seeking a lead system administrator to modernize and secure Windows and Linux environments, including AD, DNS/DHCP, PKI, and core services. You’ll manage virtualization (VMware/Hyper-V), maintain documentation, and ensure compliance with DoD cyber standards within classified and unclassified networks.

Your role supports monitoring, patching, backups, DR planning, and cross-functional collaboration with cybersecurity, network engineering, and software development teams.

Qualifications

• Candidate must hold TS/SCI clearance with polygraph.
• Bachelor’s degree or 15+ years of experience in system administration.
• DoD 8140/8570 certification such as Security+, CySA+, CCNA, or CASP+.

Responsibilities

• Install, configure, secure, maintain, and optimize Windows and Linux operating systems.

Skills

Windows system administration

Linux system administration

Active Directory

DNS/DHCP

PKI

PowerShell/Bash/Python scripting

VMware/Hyper-V

Networking fundamentals

Monitoring/troubleshooting

TS/SCI clearance with polygraph

Education

Bachelor’s degree in a related field

15+ years of system administration experience in lieu of a degree

DoD 8140/8570 Certification (Security+, CySA+, CCNA, CASP+)

Tools

VMware

Hyper-V

Splunk

Nagios

Ansible

Git

CI/CD tools

ACAS/Tenable

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. As a lead system administrator on our team, you’ll gain hands-on experience with enterprise infrastructure, mission critical systems, and operations in classified and unclassified environments.You’ll guide your team as it provides insights through monitoring and performance management. Your system administration expertise will be vital as you evaluate opportunities for improvement in a mission-critical network. You’ll help your team better understand the network by turning metrics into information and explaining their meaning and identify opportunities for modernization.**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.Join us. The world can’t wait.**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:****A**pplicants 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.