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# Sr. Specialist, IT Security (Infrastructure)

- **Company:** L3Harris Technologies, Inc.
- **Location:** Anaheim, CA, United States
- **Experience:** Expert
- **Salary:** $96,000.0 - $178,000.0
- **Contract:** Permanent contract
- **Skills:** Cisco Systems VPN Client, Configuration Management, Cyber Security, Network Security, Linux System Administration, Microsoft Networking, Network Architecture, Red Hat Enterprise Linux, Remote Access Technology, Network Routers, SC Clearance, Cisco
- **Published:** August 28, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9124367/sr-specialist-it-security-infrastructure

## About the Role

* Bachelor's Degree and minimum 6 years of prior relevant experience. Or, 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.
 * Must have experience with Infrastructure Management, including Aruba Switch Management, ClearPass Administration, Cisco VPN Management.
 * Must have experience with Infrastructure Security.

Preferred Additional Skills:

 * Active Secret Clearance.
 * Experience with Windows Networking, including Account Management and File Share Management.
 * Experience with Linux Administration: Red Hat 9.x
 * Certifications are a plus but not required.
 * Project Management skills are a plus.

## Description

The position is responsible for the design, implementation, administration, and ongoing optimization of L3Harris air gapped network infrastructure across office and operational environments. This role owns the day-to-day operation and health of network systems, leads troubleshooting of connectivity and security issues, and drives infrastructure projects from planning through completion. The position works closely with Security, and business stakeholders to deliver reliable and secure services. The ideal candidate brings hands-on experience with enterprise-grade networking platforms, a strong foundation in network security and VPN technologies, and the ability to operate with minimal supervision while contributing to a high-performing team.

Essential Functions:

 * Infrastructure Management:

*

 + Aruba Switch Management
 + ClearPass Administration
 + Cisco VPN Management
 + Cisco Router Management

 * Infrastructure Security:

*

 + Configuration Management
 + Patching and Updates

 * Linux Administration: Red Hat 9.x
 * Windows Networking: Account Management and File Share Management.
 * Ability to obtain and maintain a US Secret security clearance.


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