Sr. Specialist, Integration & Test Engineer

As the premier provider of Space Domain Awareness (SDA) mission solutions for the United States Space Force, L3Harris is seeking a mid-level to senior Integration and Test Engineer to perform Software Systems Integration and System Test functions related to the MOSSAIC C2 Space Domain Awareness (SDA) mission, as well as Lead Engineer functions for the NDPP System Team. The ideal candidate will have 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.  Additionally, the candidate will have experience with project planning, cost and schedule tracking, system architecture and team management.

Essential Functions:

• Oversee cross-functional engineering teams and provide technical guidance throughout the project lifecycle.
• 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.
• Communicate with external stakeholders to understand mission partner needs.
• Collaborate with Systems Engineers, Software Engineers and senior Integration & Test Engineers to identify system requirements for Validation & Verification, ensuring stakeholder needs are met.
• 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.
• Collaborate and troubleshoot with System Administrators to maintain the system’s operational posture.
• Assist in the creation and maintenance of technical documentation, including System Models based in SysML.

Qualifications:

• Bachelor’s Degree and minimum 6 years of prior relevant experience. Graduate Degree with 4 years of prior related experience. In lieu of a degree, minimum of 10 years of prior related experience.
• Active U.S. DoW Top Secret security clearance with the ability to obtain 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
• Proficiency in Linux
• Proficiency in Test Automation software
• Familiarity with SOW/BOE/Proposal development

In compliance with pay transparency requirements, the salary range for this role in Colorado state is $88,500-$164,500. This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location. L3Harris also offers a variety of benefits, including health and disability insurance, 401(k) match, flexible spending accounts, EAP, education assistance, parental leave, paid time off, and company-paid holidays. The specific programs and options available to an employee may vary depending on date of hire, schedule type, and the applicability of collective bargaining agreements.

The application window for this position will close on 9/29/2026.

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.

By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions.

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