Avionics Test Software Engineer Torrance, CA Avionics Test

Why Castelion, Why Now

Castelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus, ownership, and excellence are decisive advantages - and we're building a world-class team to turn bold ideas into real capability.

This is a rare opportunity to join at an early stage, where you'll have significant ownership, collaborate with exceptional teammates, and make a direct, measurable impact on our mission and the future of the company - regardless of your function.

Avionics Test Software Engineer

An Avionics Test Software Engineer at Castelion owns the architecture, design, and technical direction of the software frameworks used to develop, automate, execute, and analyze avionics hardware testing. This role establishes scalable software architectures and reusable frameworks that enable rapid development, integration, verification, and production test across complex avionics systems. The Engineering Lead works closely with avionics, electrical, software, test, manufacturing, and systems engineering teams to translate test requirements into robust and maintainable software solutions.

Responsibilities

• Own the architecture and technical direction of avionics test software frameworks,establishingscalable patterns, interfaces, APIs, and infrastructure that support rapid hardware development and test execution.
• Design and develop reusable test software frameworks, libraries, drivers, and services that enable engineers and technicians to quickly develop and execute automated hardware tests.
• Define software architecture standards, development practices, coding standards, configuration management, and design patterns for avionics test software.
• Develop software interfaces to avionics hardware, instrumentation, data acquisition systems, power supplies, communication buses,databases,and other test equipment using appropriate hardware and software protocols.
• Partner with avionics and Flight Software engineers to translate hardware requirements, test requirements, and verificationobjectivesinto automated test architectures and software implementations.
• Establish common abstractions and reusable components for test sequencing, instrumentation control, hardware configuration, data acquisition, telemetry, logging, reporting, and test result management.
• Lead the development of test automation infrastructure that supports hardware bring-up, development testing, qualification, verification, and production test while minimizing test development and execution time.
• Establish software architecture that supports deterministic and repeatable test execution, robust fault handling, test recovery, and clear identification of hardware versus test-system failures.
• Develop andmaintainautomated test capabilities using Python and other appropriate software technologies, with an emphasis on maintainability, reliability, extensibility, and ease of use.
• Define and implement software interfaces between test frameworks and engineering systems, including hardware configuration databases, test data systems, manufacturing systems, and other enterprise tools.
• Establish automated software build, test, validation, and deployment processes, including appropriate useof version control, continuous integration, automated testing, and code review.
• Lead technical reviews of test software architecture and implementations,identifying opportunities to improve reliability, scalability, development velocity, and long-term maintainability.
• Mentor and provide technical leadership to test software engineers and other developers,establishing best practices while maintaininga high levelof individual technical contribution.
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