Propulsion Engineering Intern (Summer 2027)

Castelion Corporation•Torrance, CA

About The Position

Castelion is hiring a Propulsion Engineering Intern for Summer 2027 to contribute to the development of next-generation missile systems. The internship offers hands-on experience in aerospace engineering, including work on hypersonic missile systems and participation in the design, testing, and integration of advanced defense technologies. Interns will work in a fast-paced, collaborative startup environment, develop technical skills with high-performance teams and state-of-the-art tools, and learn about the missile-development lifecycle from design and prototyping through testing and final integration. Mentorship will be provided by experienced aerospace and defense engineers and leaders. The position may require access to classified information or restricted U.S. Government sites, systems, or information. If designated, employment may depend on obtaining and maintaining required U.S. Government security clearance or authorization and meeting applicable citizenship or other eligibility requirements. The position also requires access to export-controlled information, contingent on the candidate being able to access applicable information without additional export licensing.

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 additional export licensing being required.
If the position is designated as requiring government clearance or authorization, ability to obtain and maintain the required clearance or authorization and meet applicable citizenship or other eligibility requirements.

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 the missile-development lifecycle, 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.