Principal/Senior Principal Virtualization Systems Administrator

Northrop Grumman

. Adhere to strict information systems security guidelines in accordance with 32 CFR Part 117, NISPOM, and DAAPM .

Posted 11/12/2026full-timeBaltimore • Maryland • United StatesSenior💰 $98,900 - $185,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in System Administration for classified environments, including managing Windows and Linux Server Operating Systems within Microsoft Active Directory. Proficient in security compliance, troubleshooting, and vendor management while maintaining operational integrity across multi-user systems.

Highest-signal resume keywords

System AdministrationWindows Server ManagementMicrosoft Active DirectorySecurity+ CE CertificationNISPOM Compliance

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Windows Server Operating SystemLinux Operating SystemNetwork ConfigurationScriptingSystem ImagingSecurity DocumentationTroubleshootingFile Permissions ManagementEnvironmental Monitoring ToolsVendor Evaluation

Soft Skills

CommunicationTeam LeadershipProblem SolvingIndependent WorkCustomer Interaction

Tools & Technologies

VMWare VirtualizationSAN Storage SystemsCisco NetworkingHBSSSolar WindsSplunk

Certifications & Qualifications

Security+ CECISSPCASPU.S. Government 8140 CertificationSpecial Access Program Clearance

Industry Keywords

NISPOMDAAPM32 CFR Part 117STIGJSIGRMFDCID 6/3-ICD 503Systems Certification & AccreditationContinuous Evaluation ProgramGovernment Clearance

Tech Stack

Tools & technologies

LinuxSplunkVMware

About the role

Key responsibilities & impact

Adhere to strict information systems security guidelines in accordance with 32 CFR Part 117, NISPOM, and DAAPM
Analyze internal and external customer requirements to determine appropriate hardware and software requirements
Communicate with internal and external customers in written and verbal formats
Create and maintain user and computer accounts and modify file permissions and security access lists in Microsoft Active Directory
Develop and document technical processes and procedures
Direct other team members as necessary
Troubleshoot issues with vendors and evaluate vendor products, services, and suggestions
Maintain security audit and logging information on classified networked and standalone computers
Maintain smooth operation of multi-user computer systems while coordinating with network, software, and system engineers, desktop technicians, project managers, end users, customers, and IT management
Recommend hardware, software, and system component purchases
Perform as a System Administrator for a classified government contract
Prepare security documentation for Computer Security
Provide backup and recovery services, manage file systems and disk space, and manage virus protection
Recommend and implement system enhancements, including installation, upgrades/patching, monitoring, problem resolution, and configuration management
Report project status for recurring and non-recurring efforts
Support multiple networks and complete administration tasks in a timely manner
Test new product releases for compatibility and minimal user impact

Requirements

What you’ll need

Associate's degree and 7 years of relevant experience, or Bachelor’s degree and 5 years of relevant experience, or Master's degree and 3 years of relevant experience; a High School diploma or equivalent with 9 years of relevant experience may be considered in lieu of a completed degree (Level 3)
Associate’s degree with 10 years of relevant experience, or a Bachelor’s degree with 8 years of relevant experience, or a Master’s degree with 6 years of relevant experience, or a PhD with 4 years of relevant experience; a High School diploma or equivalent with 12 years of relevant experience may be considered in lieu of a completed degree (Level 4)
Active U.S. Government Secret level security clearance at minimum, with a closed investigation date completed within the last 6 years, or enrollment in the U.S. Government Continuous Evaluation Program (CEP)
Ability to obtain a Special Access Program (SAP/SAR) clearance before a start date can be established
Current Security+ CE, CISSP, CASP, or similar certification, or ability to acquire certification within 6 months of hire
Experience managing Windows and/or Linux Server Operating Systems in a Microsoft Active Directory domain architecture
Ability to work under minimal direction and independently determine and develop approaches to solutions
Ability to lift equipment weighing up to 40 pounds, unassisted
U.S. Citizenship is required for positions with a government clearance
Preferred: Bachelor’s or Master's degree in an IS-related field
Preferred: Current U.S. Government Top Secret security clearance
Preferred: Currently valid Security+ CE, CASP, CISSP, or similar security certification
Experience with NISPOM Chapter 8, DCID 6/3-ICD 503, RMF, STIG, JAFAN, or JSIG information system environments
Experience installing, configuring, and maintaining computer hardware in a networked environment
Windows Server management experience
Microsoft Active Directory domain architecture experience
Understanding of basic networking, including subnets, routing, and VLANs
Cisco experience and/or certification is a plus
Knowledge of SAN storage systems
Linux Operating System experience and/or certification for current versions
VMWare Virtualization technology experience with current version
Knowledge of environmental monitoring tools (HBSS/Solar Winds/Splunk)
Rudimentary scripting experience
Experience with creation and deployment of system images in an enterprise environment
Experience with Systems Certification & Accreditation process under DCSA's STIG and/or JSIG requirements
U.S. Government 8140 (8750 equivalent) certification in a primary OS (Windows, Linux, Cisco)

Benefits

Comp & perks

Relocation assistance may be available
Flexible work arrangements
Learning opportunities
Exposure to a wide variety of projects and customers
Friendly team environment
Exceptional benefits/healthcare
Health insurance coverage
Life and disability insurance
Savings plan
Company paid holidays
Paid time off (PTO) for vacation and/or personal business
9/80 work schedule
401k matching program
Overtime eligibility may be available
Shift differential may be available
Discretionary bonus may be available
Long Term Incentives may be available for Vice President or Director positions