Summer 2026 Mechanical Engineering Internship

castelion

10 days ago

Torrance, California

Onsite

Internship

Junior

0 applicants

View Job Listing

Apply to 100+ jobs

About this role

Castelion is seeking mechanical engineering interns for summer 2026 to contribute to the development and testing of next-generation missile systems. Interns will work on designing, analyzing, and integrating advanced defense technology components in a fast-paced startup environment, gaining hands-on experience and mentorship in aerospace engineering.

Skills

Qualifications

Bachelor's Degree in Mechanical EngineeringMaster's Degree in Mechanical or Aerospace Engineering

About castelion

castelion.com

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.