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© All Rights Reserved. ApplyBlast.com
castelion
Castelion is seeking an Electrical Engineering Intern for Fall 2026 to design, build, and test electronics for advanced missile systems. The role involves owning circuit board design from architecture through validation, integrating analog and digital circuits, and collaborating with cross-functional teams on rapid prototyping. Interns will gain hands-on experience with hardware bring-up, debugging, and system integration in a fast-paced defense environment.
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.
43% below the average for this role