Propulsion Engineering Intern (Summer 2027)

Castelion Corporation • Torrance, CA

5h

About The Position

Castelion is hiring a Propulsion Engineering Intern for Summer 2027 to contribute to developing next-generation missile systems in a fast-paced, collaborative startup environment. The intern will gain hands-on aerospace engineering experience and work on hypersonic missile systems, contributing to the design, testing, and integration of advanced defense technologies. The role offers exposure to the missile development lifecycle, from design and prototyping through testing and final integration, as well as mentorship from experienced aerospace and defense engineers and leaders.

The position is intended for students pursuing a bachelor's or master's degree in mechanical engineering, aerospace engineering, or a related field. Applicants may need to meet export-control eligibility requirements, and the role may require a U.S. Government security clearance or other authorization if designated by the company or applicable requirements.

Requirements

• Currently pursuing a bachelor's or master's degree in mechanical engineering, aerospace engineering, or a related field.
• Strong academic record with relevant coursework in mechanical design, propulsion, power systems, or related fields.
• Passion for aerospace, defense technology, and innovative engineering solutions.
• Excellent problem-solving, analytical, and communication skills.
• Ability to work collaboratively in a fast-paced, team-oriented environment.
• Ability to access applicable export-controlled information without requiring additional export licensing.

Nice To Haves

• Rising junior, senior, or graduate-level student.
• Hands-on experience through lab work, projects, or internships.

Responsibilities

• Gain hands-on experience in aerospace engineering while working on hypersonic missile systems.
• Develop technical skills by working with high-performance teams and state-of-the-art tools.
• Learn about the full lifecycle of missile development, from design and prototyping to testing and final integration.
• Receive mentorship from experienced engineers and leaders in the aerospace and defense industry.
• Contribute to the design, testing, and integration of advanced defense technologies.

Benefits

• Generous benefits package; details are available at the bottom of Castelion's Careers page.

What This Job Offers

• Job Type: Full-time
• Career Level: Intern