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© All Rights Reserved. ApplyBlast.com
castelion
This is a paid internship for Fall 2026 where students assist in the design, analysis, and testing of components for next-generation missile subsystems. Interns will support engineering teams with simulations, prototyping, and system integration while gaining hands-on experience in aerospace and defense technologies. The role offers mentorship from experienced engineers and the opportunity to contribute meaningfully to cutting-edge hypersonic missile development.
Headquarters
Torrance, California, United States
Company Size
11-50 employees
Founded
2022
Castelion designs, tests, and manufactures next‑generation military systems rapidly and at massive scale to deter future wars. The company integrates rapid engineering, prototyping, testing, and high‑rate production to field advanced defense capabilities. Serving military and government customers, Castelion emphasizes speed, scalability, and rigorous validation to deliver resilient systems when and where they’re needed.
Headquarters
San Francisco, CA
Company Size
201-500 employees
Founded
2018
Industry
Technology
Glassdoor Rating
4.2 / 5
Sarah Johnson
Chief Executive Officer
Michael Chen
Chief Technology Officer
Emily Williams
VP of Engineering
David Rodriguez
VP of Product
Jessica Thompson
Chief Financial Officer
Andrew Park
VP of Sales
View leadership team, funding history,
and employee contacts for castelion.
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