Security-Cleared Senior Systems Administrator (Windows/Network)

L3Harris Technologies; Palm Bay (FL); On-site; USD 110,000 - 150,000; Full time

Job summary

L3Harris Technologies in Palm Bay, FL is seeking a Senior Specialist, Systems Administrator to maintain secure Windows systems and network infrastructure for classified environments. The role combines system and network administration with vulnerability management, RMF compliance, and automation to improve operations.

The ideal candidate has a Bachelor's degree with extensive experience, or a graduate degree with related experience, plus an active TS/SCI clearance with full-scope polygraph.

Qualifications

• Bachelor’s Degree with 6+ years of relevant experience, or graduate degree with 4+ years.
• Graduate Degree with 4+ years of related experience; or 10+ years of related experience in lieu of a degree.
• Active TS/SCI clearance with full-scope polygraph.

Responsibilities

• 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.

Skills

Windows OS

Linux OS

Networking protocols

PowerShell

Security best practices

Education

Bachelor’s Degree + 6+ years

Graduate Degree + 4+ years or 10+ years experience in lieu of a degree

Tools

PowerShell

VMware

Ansible

Commvault

RHEL 8/9

CentOS

Ubuntu

Job description

L3Harris Technologies in Palm Bay, FL is seeking a Senior Specialist, Systems Administrator to maintain secure Windows systems and network infrastructure for classified environments. The role combines system and network administration with vulnerability management, RMF compliance, and automation to improve operations.

The ideal candidate has a Bachelor's degree with extensive experience, or a graduate degree with related experience, plus an active TS/SCI clearance with full-scope polygraph.