Senior Specialist, Systems Administration

L3Harris Technologies; Melbourne (FL); On-site; USD 90,000 - 130,000; Full time

Job summary

L3Harris Technologies in Melbourne, FL is seeking a Senior Windows System Administrator to join our IT team. You will manage Windows Server/Desktops, Citrix Workspace, and VMware infrastructure, applying STIGs and scripting to optimize security and performance.

The role requires strong hands-on experience with virtualization, backups (Commvault), AD/Group Policy, and collaboration with ISSOs to support audits and patch management.

Qualifications

• Bachelor’s degree or higher with relevant experience; equivalent experience considered.
• 4+ years of Microsoft Windows, Citrix and VMware systems administration.
• Current/active TS/SCI security clearance.

Responsibilities

• Configure, monitor, maintain, and troubleshoot Windows Server/Desktop, Citrix Workspace, and Citrix NetScaler systems.
• Install software and troubleshoot application compatibility.
• Document system configurations, procedures, and best practices.
• Work with virtualization and backup technologies (VMware, Commvault, NAS, SAN).
• Automate tasks using bash scripting.
• Collaborate with ISSOs to support audits, STIG compliance, and Nessus findings remediation.
• Apply security patches, conduct system scans, and support audits to ensure integrity.
• Provide flexible support outside standard hours as needed.

Skills

Windows administration

Citrix

VMware administration

bash scripting

security/compliance

Education

Bachelor’s Degree

Graduate Degree

Tools

VMware vSphere

VMware vCenter

Citrix Workspace

Citrix Netscaler

Commvault

PowerShell

Active Directory / Group Policy

Job description

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title

Senior Specialist, Systems Administration

Job Code

42650

Job Location (On Site)

Melbourne, 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 an experienced Senior Windows System Administrator to join our dynamic IT team. The ideal candidate will have a deep understanding of Windows, VMware systems and Citrix, including advanced skills in kickstarting, applying Security Technical Implementation Guides (STIGs), and bash scripting. This role involves managing, optimizing, and securing our Windows, VMware and Citrix infrastructure to ensure high performance and reliability.

Essential Functions

• Configure, monitor, maintain, and troubleshoot Windows Server and Desktop, Citrix Workspace systems, and Citrix NetScaler systems.
• Experience in software installation and ability to troubleshoot application compatibility.
• Create and maintain comprehensive documentation for system configurations, procedures, and best practices.
• Experience with Virtualization (KVM/VMware) and backup technologies such as Commvault, NAS, SAN, SAS, iSCSI.
• Ability to automate repetitive and/or complicated tasks using bash.
• Collaborative efforts with ISSOs to support audits, maintain STIG compliance, conduct risk assessments, and remediate Nessus/STIG scan findings.
• Responsible for implementing security patches, conducting system scans, remediate findings, and participating in audits to ensure system integrity.
• Committed to supporting critical operations during standard business hours and providing flexible support as needed outside standard hours.

Qualifications

• Bachelor’s Degree and minimum 6 years of prior relevant experience. Graduate Degree and a minimum of 4 years of prior related experience. In lieu of a degree, minimum of 10 years of prior related experience.
• 4+ years of Microsoft Windows, Citrix and Vmware systems administration experience.
• Current/active TS/SCI security clearance

Preferred Additional Skills

• Strong knowledge of Windows, VMware and Citrix.
• Knowledge of Linux operating systems, networking protocols, PowerShell, and security best practices.
• Ability within 6 months of hire to achieve Security +
• Current/active TS/SCI security clearance. Must be willing to submit to a CI Polygraph, if required.
• Four (4) years of experience supporting Windows Server, VMware Vsphere and VCenter, and Citrix Workspaces and Netscaler.
• Experience with VMware or similar virtualization software.
• Experience with Commvault or similar backup system software.
• Experience managing systems under the NIST Risk Management Framework.
• Experience with Active Directory (AD) and Group Policys.

L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.

Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

L3Harris Technologies is an E-Verify Employer.