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Sr. Specialist, Integration & Test Engineer

L3Harris

Rockwall, TX · Posted October 21, 2026

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  • Python
  • Agile
  • Java
  • Kubernetes
  • Linux

About the job

Job Title: Sr. Specialist, Integration/Test Engineering

Job Code: 46571

Job Location: Rockwall, TX

Job Schedule: 9/80 - Employees work 9 out of every 14 days - totaling 80 hours worked (Every Other Friday Off)

Job Description:

As the premier provider of Space Domain Awareness (SDA) mission solutions for the United States Space Force, L3Harris is seeking a mid-level Integration and Test Engineer to perform Software Systems Integration and System Test functions related to the MOSSAIC C2 Space Domain Awareness (SDA) mission. The ideal candidate will have some experience in Systems Engineering Integration & Test (SEIT) activities such as Requirements Development/Derivation, Test Documentation (Plans, Procedures, Reports), Test Execution, System Troubleshooting, and Defect Tracking and Resolution.

Essential Functions:

Execute and assist in developing detailed test plans, procedures and cases based on system requirements.

Identify, record, document thoroughly, and track defects through to resolution.

Perform manual and automated testing to ensure software performance/functionality meets the high standards required for L3Harris operations.

Collaborate with Systems Engineers, Software Engineers and senior Integration & Test Engineers to identify system requirements for Validation & Verification.

Participate in design reviews and provide input on requirements, product design, test methodology and potential problems.

Analyze test results, detect issues, and track root causes in collaboration with the development and test teams.

Assist in the creation and maintenance of technical documentation, including System Models based in SysML.

Support cloud environment operations through the use of Docker containers, Kubernetes orchestration, and Helm chart-based deployments.

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.

Ability to obtain TS/SCI access within 6 months of hire.

Preferred Additional Skills:

Active U.S. DoW TS/SCI security clearance.

Active Security+ CE certification

Basic knowledge of the Space Domain Awareness enterprise and engineering efforts.

Familiarity with MBSE/Eggplant and similar testing tools as well as DoW testing requirements.

Familiarity with Jira/Confluence (or equivalent)

Experience in Scaled Agile Framework & DevSecOps methodology

Java and C++ application software testing

Proficiency in Linux

Proficiency in Test Automation software

Proficiency in Python programming

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