Systems Administrator II – Domain and Server

AMERICAN SYSTEMS

. Administer and maintain server systems and supporting infrastructure .

Posted 10/22/2026full-timePoint Mugu NAWC • California • United StatesMid-LevelSenior💰 $120,000 - $145,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in systems administration, including server management, operating system configuration, and vulnerability remediation in regulated environments. Proficient in maintaining technical documentation and collaborating with cross-functional teams to ensure system integrity and performance.

Highest-signal resume keywords

Systems AdministrationDoD 8570/8140 IAT Level II CertificationMicrosoft Infrastructure ServicesVulnerability RemediationNIST, FISMA, RMF Knowledge

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Server AdministrationOperating System ConfigurationPatchingHardeningTechnical DocumentationTroubleshootingBackup and Recovery OperationsVirtualized Server EnvironmentsCOTS and GOTS Software InstallationResource Optimization

Soft Skills

Strong Communication SkillsTeam CollaborationAbility to Work IndependentlyManaging Multiple Priorities

Tools & Technologies

Active DirectoryDNSDHCPGroup Policy

Certifications & Qualifications

Security+ CECySA+SSCPCNDGSECGICSP

Industry Keywords

Regulated EnvironmentsRMFDISA STIGFISMAFederal Background Investigation

Tech Stack

Tools & technologies

Cyber SecurityDNS

About the role

Key responsibilities & impact

Administer and maintain server systems and supporting infrastructure
Perform system deployment, setup, and configuration, including operating system installation, hardware configuration, and initial software setup
Maintain, patch, harden, and update operating systems, applications, and approved software
Install, configure, and update approved COTS and GOTS software
Monitor system health and performance and support resource optimization
Troubleshoot system, hardware, and software issues and respond to incidents
Develop and maintain technical documentation
Support vulnerability remediation, security control implementation, and RMF-related documentation and system changes
Provide system status, patch, and hotfix reporting
Collaborate with network, cybersecurity, and support personnel on approved changes, problem resolution, and asset and configuration information

Requirements

What you’ll need

Must be a U.S. Citizen
3 to 5 years of experience in systems administration
Must hold a current DoD 8570/8140 IAT Level II certification, such as Security+ CE, CySA+, SSCP, CND, GSEC, GICSP, or equivalent
Strong technical knowledge of server administration, operating system configuration, patching, hardening, and infrastructure support in regulated environments
Experience managing Microsoft infrastructure services such as Active Directory, DNS, DHCP, and Group Policy
Experience supporting system deployment, configuration, patching, software updates, backup and recovery operations, and vulnerability remediation
Experience supporting virtualized server environments
Working knowledge of NIST, FISMA, RMF, and DISA STIG requirements
Experience maintaining technical documentation
Strong troubleshooting skills for moderately complex system, hardware, and software issues
Ability to work independently while managing multiple priorities
Strong communication skills and ability to work effectively in a team-oriented environment
Must have an active Secret clearance with ability to obtain Top Secret with SCI eligibility, or have active Top Secret with SCI eligibility
Subject to a federal background investigation

Benefits

Comp & perks

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