L3HHCM20
Senior Specialist, Systems Administrator
L3HHCM20 is hiring a Senior Specialist, Systems Administrator in Palm Bay, FL, US. Posted September 23, 2026.
Job at a glance
- Company
- L3HHCM20
- Location
- Palm Bay, FL, US
- Sector
- Engineering & Technology
- Posted
- September 23, 2026
About the job
Job Title: Senior Specialist, Systems Administrator Job Code: 43405 Job Location: Palm Bay, FL Job Schedule: 9/80: Employees work 9 out of every 14 days – totaling 80 hours worked, and have every other Friday off
Job Description:
We are seeking a dedicated System/Network Administrator to join our IT team. The ideal candidate will be responsible for maintaining the integrity, availability, and security of classified Windows systems and network infrastructure. This role involves a blend of system administration, network management, project coordination, vulnerability management, system hardening, and desktop/software support.
Essential Functions:
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Administer and maintain Microsoft Windows servers, client systems, backup systems, network infrastructure, and databases.
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Provide end user desktop support for systems and applications at the local site and across the classified WAN.
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Build, configure, and maintain physical and virtual Windows servers in support of program requirements.
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Perform regular system updates, patching, and hardening activities to reduce vulnerabilities and ensure compliance with applicable standards.
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Develop and maintain scripts and automation tools to streamline deployment and improve operational efficiency.
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Collaborate with engineering teams to understand program requirements and deliver effective technical solutions.
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Communicate complex technical issues, risks, and recommendations clearly to management and non-technical stakeholders.
Qualifications:
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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.
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Active TS/SCI clearance with full-scope polygraph.
Preferred Additional Skills:
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6 years of experience as a System/Network Administrator supporting an enterprise-level domain environment.
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Strong knowledge of Windows and/or Linux operating systems, networking protocols, PowerShell, and security best practices.
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Experience supporting Linux systems, including Red Hat Enterprise Linux (RHEL) 8/9, CentOS, and Ubuntu.
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Experience with Commvault or similar enterprise level backup system.
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Experience with VMware or similar virtualization platforms.
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Experience with Ansible.
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Experience with Commvault or similar backup solutions.
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Experience managing systems in compliance with the NIST Risk Management Framework (RMF).
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