Senior Specialist, Systems Administrator

L3Harris Technologies

System/Network Administrator responsible for maintaining classified Windows systems and network infrastructure. Administering and managing Microsoft Windows servers and providing desktop support in Palm Bay, FL.

Posted 7/8/2026full-timePalm Bay • Florida • 🇺🇸 United StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in administering and maintaining Microsoft Windows servers and Linux systems, with a strong focus on security best practices and compliance with NIST RMF. Proficient in developing automation tools and scripts to enhance operational efficiency while providing effective technical solutions to both technical and non-technical stakeholders.

Highest-signal resume keywords

Windows Server AdministrationLinux System SupportPowerShell ScriptingNIST Risk Management Framework ComplianceVMware Virtualization

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

System AdministrationNetwork AdministrationBackup Systems ManagementPatching and HardeningAutomation Tools DevelopmentNetworking ProtocolsSecurity Best PracticesRed Hat Enterprise LinuxCentOSUbuntu

Soft Skills

Clear CommunicationCollaboration

Tools & Technologies

CommvaultVMwareAnsible

Certifications & Qualifications

Active TS/SCI Clearance

Industry Keywords

Enterprise-Level Domain EnvironmentClassified WANOperational Efficiency

Tech Stack

Tools & technologies

AnsibleLinuxTypeScriptVMware

About the role

Key responsibilities & impact

Administer and maintain Microsoft Windows servers, client systems, backup systems, network infrastructure, and databases.
Provide end user desktop support for systems and applications at the local site and across the classified WAN.
Build, configure, and maintain physical and virtual Windows servers in support of program requirements.
Perform regular system updates, patching, and hardening activities to reduce vulnerabilities and ensure compliance with applicable standards.
Develop and maintain scripts and automation tools to streamline deployment and improve operational efficiency.
Collaborate with engineering teams to understand program requirements and deliver effective technical solutions.
Communicate complex technical issues, risks, and recommendations clearly to management and non-technical stakeholders.

Requirements

What you’ll need

Bachelor’s Degree and minimum 6 years of prior relevant experience
Graduate Degree and a minimum of 4 years of prior related experience; or, in lieu of a degree, minimum of 10 years of prior related experience.
Active TS/SCI clearance with full-scope polygraph.
6 years of experience as a System/Network Administrator supporting an enterprise-level domain environment.
Strong knowledge of Windows and/or Linux operating systems, networking protocols, PowerShell, and security best practices.
Experience supporting Linux systems, including Red Hat Enterprise Linux (RHEL) 8/9, CentOS, and Ubuntu.
Experience with Commvault or similar enterprise level backup system.
Experience with VMware or similar virtualization platforms.
Experience with Ansible.
Experience with Commvault or similar backup solutions.
Experience managing systems in compliance with the NIST Risk Management Framework (RMF).

Benefits

Comp & perks

Employees work 9 out of every 14 days – totaling 80 hours worked, and have every other Friday off