L3Harris Technologies

Global defense contractor delivering aerospace tech

Senior Specialist - Systems Engineering

Network Engineering & AdministrationPosted on Nov 10

Full-timeGreenville, TX, USANo salary listed

About the Job

Requirements

Hold an active U.S. Secret clearance and be able to obtain or maintain a U.S. TS/SCI security clearance.
Have a bachelor's degree and at least six years of prior systems engineer experience, or a graduate degree and at least four years of prior systems engineer experience; alternatively, have at least ten years of prior systems engineer experience in lieu of a degree.
Demonstrate experience with LAN, WAN, wireless, and hybrid environments.

Responsibilities

Perform technical planning, system integration, verification and validation, and troubleshooting for total systems and subsystems.
Support the requirements, design, development, test, and integration of complex specialized hardware/software systems installed on ground and airborne communication platforms.
Design, troubleshoot, and recommend network solutions for LAN, WAN, wireless, and hybrid environments.
Configure and troubleshoot servers, including hypervisors and virtualization, firewalls, routers, switches, Linux-based systems, and various routing protocols.
Understand physical architecture incorporating voice, video, and data capability across multiple security domains.
Analyze network performance and availability metrics to identify risks, constraints, and improvement opportunities.
Collaborate with systems engineers, cybersecurity personnel, and program stakeholders to ensure network designs align with security and compliance requirements.
Prepare and maintain technical documentation, including network diagrams, design packages, implementation plans, standards, and configuration guidance.
Develop subsystem specifications, manage requirements traceability, and verify system performance against requirements.
Support integration, test, and deployment activities.
Travel 10% based on business needs.

Desired Qualifications

Hold an active DoD Top Secret (SCI) security clearance.
Have experience working with subcontractors and U.S. Government customers.
Hold advanced networking certifications.

Job Title: Senior Specialist, Systems Engineering

Job Code: 47529

Job Location: Greenville, TX

Job Schedule: 9/80 - Employees work 9 out of every 14 days – totaling 80 hours worked – and have every other Friday off

Job Description:

The Senior Specialist, Systems Engineering performs technical planning, system integration, verification and validation, and troubleshooting for total systems and subsystems. The Senior Specialist, Systems Engineering will be part of a team that supports the requirements, design, development, test, and integration of complex, specialized hardware/software systems installed on ground and airborne communication platforms.

Essential Functions:

10% travel based on business needs.
Design, troubleshoot, and recommend network solutions for LAN, WAN, wireless, and hybrid environments.
Configure and troubleshoot servers (hypervisors/virtualization), firewalls, routers, switches, Linux based systems, and various routing protocols.
Understand physical architecture incorporating voice, video, and data capability across multiple security domains
Analyze network performance and availability metrics to identify risks, constraints, and improvement opportunities.
Collaborate with systems engineers, cybersecurity personnel, and program stakeholders to ensure network designs align with security and compliance requirements.
Prepare and maintain technical documentation, including network diagrams, design packages, implementation plans, standards, and configuration guidance.
Develop subsystem specifications, manage requirements traceability, and verify system performance against requirements.
Support integration, test, and deployment activities.

Qualifications:

Active US Secret with ability to obtain/maintain a US TS/SCI security clearance.
Bachelor’s Degree and minimum 6 years of prior systems engineer experience.
Graduate Degree and a minimum of 4 years of prior systems engineer experience.
In lieu of a degree, a minimum of 10 years of prior systems engineer experience.
Demonstrated experience with LAN, WAN, wireless, and hybrid environments.

Preferred Additional Skills

Active DoD Top Secret (SCI) security clearance.
Experience working with subcontractors and U.S. Government customers.
Advanced networking certifications.

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About the Company

L3Harris Technologies

Global defense contractor delivering aerospace tech

L3Harris Technologies provides advanced aerospace, defense, and space systems for governments and commercial customers. Its products include sensors, communications, and propulsion—such as tactical radios, night-vision gear, satellite payloads, missile defense, and space propulsion—delivered as integrated systems for operations across air, land, sea, space, and cyber domains. The company blends legacy technologies from two joining giants with newer capabilities, faster acquisition cycles, and a focus on missiles, space, and resilient communications to field solutions quickly. Its goal is to be a trusted, scale-ready provider of next‑generation defense and intelligence capabilities for national security and related customers.

Company size: 10,001+
Company stage: IPO
Headquarters: Melbourne, FL
Founded: 1895

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