Systems Administration Specialist

L3Harris Technologies

. Administer and support Microsoft Active Directory Domain Services, including user and computer objects, security groups, organizational units, delegated administration, domain joins, and account lifecycle activities .

Posted 9/29/2026full-timeMelbourne • Florida • United StatesJuniorMid-LevelWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in administering and supporting Microsoft Active Directory, Windows Server environments, and virtualization platforms, with a strong focus on compliance, security hardening, and system troubleshooting. Proficient in using PowerShell for automation and maintaining technical documentation.

Highest-signal resume keywords

Microsoft Active Directory AdministrationWindows Server ManagementGroup Policy ConfigurationSCCM and WSUS SupportVMware vSphere Support

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Windows Server AdministrationActive Directory Domain ServicesGroup Policy ObjectsDNS and DHCP SupportSystem HardeningVulnerability RemediationPowerShell ScriptingSTIG ComplianceBackup and RecoveryIncident Response

Soft Skills

Strong Written CommunicationStrong Verbal Communication

Tools & Technologies

SCCMWSUSVMware vSphereMicrosoft PKIActive Directory Certificate Services

Industry Keywords

Compliance RequirementsDisaster RecoveryOperational ProcessesTechnical DocumentationOn-Call Rotation

Tech Stack

Tools & technologies

DNSVMware

About the role

Key responsibilities & impact

Administer and support Microsoft Active Directory Domain Services, including user and computer objects, security groups, organizational units, delegated administration, domain joins, and account lifecycle activities
Configure, maintain, and troubleshoot Group Policy Objects
Support DNS, DHCP, Active Directory Sites and Services, domain controller operations, replication health, and authentication troubleshooting
Build, configure, patch, harden, and maintain physical and virtual Windows Server systems
Support Windows desktop operating systems and enterprise workstations, including provisioning, software installation, troubleshooting, and compliance
Support VMware vSphere and Windows-based virtual compute environments
Execute operating system patching, vulnerability remediation, and compliance-related changes for Windows servers and endpoints
Support STIG hardening, secure baseline configurations, audit finding remediation, and validation of required settings
Support SCCM and WSUS for software deployment, patch distribution, update compliance, client health, and systems maintenance
Administer Microsoft PKI and certificate services, including enrollment, renewal, revocation, distribution, and troubleshooting
Troubleshoot system, authentication, policy, performance, and connectivity issues and coordinate resolution with peer teams, vendors, and application owners
Create and maintain PowerShell scripts, standard operating procedures, and technical documentation
Support backup, recovery, and disaster recovery activities
Support incident response, service requests, outage restoration, and change management using established operational processes

Requirements

What you’ll need

Bachelor’s Degree and minimum 4 years of prior relevant experience
Graduate Degree and minimum 2 years of prior related experience
In lieu of a degree, minimum 8 years of prior related experience
Hands-on experience administering Windows Server environments in an enterprise domain
Experience supporting Microsoft Active Directory, Group Policy, DNS, and DHCP in a production environment
Experience with server patching, system hardening, vulnerability remediation, and compliance-driven maintenance activities
Ability to work onsite in Melbourne, Florida; remote work is not available
Ability to participate in an on-call rotation, including onsite response within one hour when required
Ability to support off-hours and weekend work as needed
Ability to obtain and maintain the required security clearance
Ability to travel to a disaster recovery site as needed
Experience supporting STIG hardening, secure configuration baselines, or comparable Windows compliance requirements
Experience troubleshooting Windows server, workstation, policy, and authentication-related issues
Experience supporting VMware vSphere or comparable virtualization platforms
Experience supporting SCCM, WSUS, or similar Microsoft systems management and patching platforms
Working knowledge of Microsoft PKI, certificate lifecycle management, or Active Directory Certificate Services
Working knowledge of PowerShell for system administration, task automation, and repeatable operational support
Strong written and verbal communication skills and ability to document technical procedures, changes, and support actions clearly

Benefits

Comp & perks

9/80 work schedule: employees work 9 out of every 14 days, totaling 80 hours, with every other Friday off
Reasonable accommodation for individuals with disabilities