Specialist, Software Test Engineer

L3Harris Space and Mission Systems is seeking a Test Software Engineer to support the development, verification, and validation of test set software (TSSW) for advanced space-based payload systems. This role will work closely with System Engineering Integration and Test (SEIT) and cross-functional development teams to define software requirements, develop automated and semi-automated test solutions, and support product verification across all stages of integration and test. The engineer will be part of a small, highly collaborative team of ~6 test engineers, contributing directly to mission-critical payload development efforts., * Collaborate with SEIT and the development team to define, refine, and document requirements for test set software (TSSW) that support system verification, checkout, and compliance activities.

• Design, develop, and maintain test software applications using LabVIEW and/or Python to enable hardware checkout, functional verification, and compliance testing.
• Support testing across multiple levels of product development, including module-level, subsystem-level, and full payload-level integration and verification.
• Develop automated test sequences, data collection utilities, and analysis tools to improve test efficiency, repeatability, and traceability.
• Assist in the planning and execution of verification and validation activities to ensure products meet technical, performance, and compliance requirements.
• Interface with systems, hardware, software, and integration/test engineers to ensure test solutions align with evolving program needs.
• Troubleshoot test anomalies, investigate failures, and support root cause analysis during development and integration.
• Contribute to test documentation, procedures, reports, and configuration-controlled artifacts required for formal program reviews and product acceptance.
• Participate in a small team environment, sharing responsibilities across design, development, test execution, and issue resolution as needed., 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.

• Bachelor’s Degree in Computer Engineering, Computer Science, or related field 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 a TS/SCI security clearance.
• Professional experience working with any of the following: LabView, Python, COSMOS, MATLAB and Simulink
• Experience with space-based payloads, aerospace systems, or other highly reliable mission-critical platforms.
• 3+ years of experience in hardware/software integration and test, including development of tools used for checkout and verification.
• Professional experience troubleshooting and debugging in a lab or integration environment.

Preferred Additional Skills:

• Active Top Secret or TS/SCI clearance
• Ability to work effectively in a small, collaborative engineering team.
• Experience with DevOps tools including Jira, Bitbucket, Jenkins, and Confluence.
• Working knowledge of image processors, visible cameras, IR detectors, servo motors, actuators, and focus mechanisms.
• Familiarity with verification/compliance testing processes and structured test documentation practices.
• Experience with automated test equipment, instrumentation interfaces, data logging, and results analysis.
• Professional experience supporting testing at different levels of assembly

In compliance with pay transparency requirements, the salary range for this role in California, Massachusetts, New Jersey, Washington, and the Greater D.C, Denver, or NYC areas is $111,500.00 - $207,500.00. 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., Aerospace and Defense, Analysis Skills, Atlassian JIRA, Change Control, Computer Engineering, Computer Science, Cross-Functional, Data Collection, Debugging Skills, DevOps, Documentation, English Language, Functional Testing, Hardware-Software Integration, IR (Infrared), Identify Issues, Instrumentation, Integration Testing, Jenkins, LabVIEW Programming Language, MATLAB, Problem Solving Skills, Product Development, Product Reviews, Product Support, Python Programming/Scripting Language, Quality Assurance Methodology, Regulatory Compliance, Requirements Management, Root Cause Analysis, Security Clearance, Sensitive Compartmented Information (SCI), Servomechanism, Software Administration, Software Development, Software Engineering, Software Testing, Software Validation, Spanish Language, System Integration (SI), Systems Engineering, Team Player, Test Automation, Test Equipment, Test Plan/Schedule, Test Requirements, Test Tools, Testing, Top Secret Clearance, Traceability, Validation Testing, Wheel/Front-End Loader

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.