Test Engineer

Technical Skills

• Strong hands-on experience with test instrumentation, data acquisition (e.g., LabVIEW, MATLAB, or similar), sensors (pressure transducers, accelerometers, thermocouples), and high-speed data systems.
• Proficiency in test stand design, fixture development, and environmental test equipment (shakers, thermal chambers, etc.).
• Experience with static fire testing, thrust measurement, and ballistic performance evaluation for solid rocket motors.
• Working knowledge of safety protocols for energetic materials, ordnance handling, and high-pressure systems.
• Familiarity with telemetry, flight test operations, and post-test data analysis tools.
• Preferred Experience
• Direct experience with solid rocket motor static fire testing or hypersonic propulsion testing on DoD or NASA programs.
• Background in fast-paced environments (aerospace startups, SpaceX, Anduril, etc.).
• Experience supporting production acceptance testing and scaling test operations for rate production.
• Prior work at test ranges or with range safety processes.
• Familiarity with ITAR-controlled programs and classified testing environments.
• Soft Skills
• Strong technical problem-solving and analytical skills with a data-driven approach.
• Excellent collaboration and communication abilities across engineering, manufacturing, and test teams.
• Proven ability to lead test execution in high-stakes, safety-critical environments.
• Mentoring mindset and willingness to develop junior engineers.
• Organized, proactive, and comfortable managing multiple concurrent test activities under tight schedules.
• 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.