Systems Administrator II – Domain and Server

AMERICAN SYSTEMS

. Administer and maintain Windows and Linux servers .

Posted 10/15/2026full-timeManassas • Virginia • United StatesMid-LevelSenior💰 $90,000 - $110,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in administering and maintaining Windows and Linux servers, with strong capabilities in managing Active Directory, DNS, DHCP, and virtualization technologies. Proficient in implementing security measures, troubleshooting system issues, and supporting backup and recovery operations in compliance with federal standards.

Highest-signal resume keywords

Windows Server AdministrationLinux Server AdministrationActive Directory ManagementVirtualization Technologies8570/8140 IAT Level II Certification

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Server AdministrationDomain ManagementSystem HardeningVulnerability RemediationBackup and Recovery OperationsTroubleshootingPowerShellAnsibleTerraformSplunk

Soft Skills

Strong CommunicationTeamworkAbility to Work IndependentlyStrong Troubleshooting Skills

Tools & Technologies

NUTANIXVMwareHyper-VAWSAzureGCPSAN SolutionsNAS SolutionsGit

Certifications & Qualifications

Active Secret ClearanceTop Secret Clearance with SCI EligibilityCCNA SecurityCySA+GICSPGSECSecurity+ CECNDSSCP

Industry Keywords

NIST ComplianceFISMA ComplianceDISA STIG ComplianceDisaster Recovery PlanningSystem Configuration Documentation

Tech Stack

Tools & technologies

AnsibleAWSAzureCloudDNSGoogle Cloud PlatformLinuxSplunkTerraformVMware

About the role

Key responsibilities & impact

Administer and maintain Windows and Linux servers
Deploy, configure, maintain, and patch operating systems and applications
Support NUTANIX and other virtualization environments
Implement access controls, system hardening, and vulnerability remediation
Manage SAN and NAS storage solutions
Support backup and recovery operations
Participate in system upgrades, migrations, and disaster recovery planning and execution
Develop and maintain system configuration, operational procedure, and troubleshooting documentation
Troubleshoot moderately complex system issues and respond to incidents
Collaborate with network, security, and application teams to support and improve infrastructure operations
Administer and support Active Directory, Exchange Server, DNS, and DHCP services
Manage user accounts and permissions and monitor system performance

Requirements

What you’ll need

U.S. Citizenship required
Active Secret clearance with ability to obtain Top Secret with SCI eligibility, or active Top Secret with SCI eligibility
Subject to a federal background investigation
3 to 5 years of systems administration experience
Hands-on experience in both Windows and Linux environments
Current 8570/8140 IAT Level II Certification: CCNA Security, CySA+, GICSP, GSEC, Security+ CE, CND, or SSCP
Strong technical knowledge of server administration, domain management, and enterprise infrastructure support
Experience managing Active Directory, DNS, DHCP, and Group Policy in enterprise environments
Experience with virtualization technologies such as VMware, Hyper-V, or similar platforms
Experience supporting SAN and NAS storage solutions and backup/recovery operations
Familiarity with AWS, Azure, or GCP and hybrid cloud environments
Experience with PowerShell, Ansible, or Terraform
Experience with Splunk for system performance monitoring
Experience with Git for version control
Working knowledge of NIST, FISMA, or DISA STIG compliance
Ability to work independently while managing multiple priorities
Strong troubleshooting skills for moderately complex system issues
Strong communication and teamwork skills

Benefits

Comp & perks

Healthcare benefits
Paid leave
Retirement plans
Insurance programs
Education and training assistance
Employee ownership