What are the responsibilities and job description for the Summer 2025 Engineering Internship (Allen, TX) position at Castelion?
About Castelion
Castelion is bringing a new approach to defense development and production : one that focuses on short, iterative design cycles, rapid testing in development, and modern commercial manufacturing strategies for production at scale. We’re designing, building, and testing next-generation long-range strike weapons systems to give America and its Allies a definitive edge and deter future conflicts.
Position Overview : Castelion is seeking motivated and talented engineering interns for Summer 2025. This internship offers a dynamic, hands-on experience working on cutting-edge missile systems, including SW, guidance, navigation and control (GNC), propulsion, power electronics, manufacturing, mechanical / structures, avionics, system integration, etc. You will contribute directly to the development, testing, and integration of advanced defense systems, while working in a highly collaborative startup environment.
Key Responsibilities :
- Assist in the design, analysis, and testing of components for missile subsystems, including propulsion, guidance systems, power electronics, and more.
- Support engineering teams with simulations, modeling, and prototyping of critical hardware components.
- Conduct research and development tasks, gathering and analyzing data to inform design decisions.
- Participate in system integration efforts, helping to assemble and test subsystems in real-world test environments.
- Collaborate cross-functionally with engineering, manufacturing, and test teams to ensure project success.
- Document design processes, test results, and project progress, contributing to the continuous improvement of our systems.
- Attend technical reviews, design meetings, and team briefings to stay engaged with project developments and learn from industry experts.
Learning Opportunities :
Qualifications :
Preferred Qualifications :
Why Castelion? At Castelion, you’ll be part of a mission-driven company where every project matters. Our interns don’t just observe—they contribute meaningfully to the success of our programs. This is a unique opportunity to work at the cutting edge of aerospace engineering while developing the skills and experience that will help you grow into a future leader in the field.
Leadership Qualities :
ITAR Requirements :
Castelion is an equal-opportunity employer. Employment decisions are based on qualifications, experience, and merit, regardless of race, color, religion, gender, national origin, veteran status, disability status, sexual orientation, or any other protected class.
