Avionics Test Software Engineer Senior
Castelion
Avionics Test Software Engineer Senior
Castelion
Designs and manufactures hypersonic strike weapons
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
Basic Qualifications
Preferred Skills and Experience
Castelion offers a generous benefits package. Please refer to the bottom of our Careers page for more details.
Other Duties
Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.
Additional Eligibility Requirements
This position may require access to classified information or restricted U.S. Government sites, systems, or information, as determined by the Company and/or applicable U.S. Government requirements. If the position is so designated, your employment in the role may be contingent upon your ability to obtain and maintain the required U.S. Government security clearance or other government authorization, and to satisfy any citizenship or other eligibility requirements imposed by applicable law, regulation, executive order, or government contract requirements. You will be notified if and when such requirements apply.
Affirmative Action/EEO Statement
Castelion is an Equal Opportunity Employer. We are committed to providing equal employment opportunities to all applicants and employees without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, genetic information, protected veteran status, or any other characteristic protected by applicable federal, state, or local law.
Castelion is committed to providing reasonable accommodations to qualified individuals with disabilities throughout the application and hiring process. If you require a reasonable accommodation to complete an application, participate in the interview process, or otherwise participate in the hiring process, please contact [email protected]. Requests for accommodation will be considered on an individual basis and handled in accordance with applicable law.
Castelion is committed to fostering a workplace where employment decisions are based on qualifications, business needs, and the ability to perform the essential functions of the role, with or without reasonable accommodation.
EAR/ITAR Requirements
This position requires access to export-controlled information, and as such, employment (or hiring of a contractor) is contingent upon the candidate’s ability to access all applicable export-controlled information without additional export licensing being required by the Bureau of Industry and Security and/or the Directorate of Defense Trade Controls.
Castelion designs, tests, and manufactures hypersonic strike weapons for the U.S. military, aiming to deter future wars with fast, credible, non-nuclear deterrence. Its flagship Blackbeard is a low-cost, mass-producible hypersonic missile compatible with HIMARS/MLRS, built in-house with solid rocket motors, propellant, and a real-time, hardware-isolated flight computer. The company uses vertical integration and a rapid test-and-iterate cycle, with frequent flight tests and Project Ranger, a 1,000-acre facility in New Mexico to scale production. It competes with traditional defense primes on speed and cost, selling under government contracts and development awards to field advanced weapons at scale.
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