R&D Technician - Hypersonics (Welding, Machining, Composites)

Job Description

Job Description

About Castelion

Castelion is bringing a new approach to defense development and production : one that focuses on short, iterative design cycles, rapid testing in development, and modern commercial manufacturing strategies for production at scale. Were designing, building, and testing next generation long range strike weapons systems to give America and its Allies a definitive edge and deter future conflicts.

R&D Technician - Hypersonics (Welding, Machining, Composites)

We're looking for a hands-on R&D Technician to support prototype fabrication, assembly, and test of hypersonic systems. You'll work directly with engineers to translate designs into parts and assemblies - focusing on precision manual machining, TIG / MIG welding, and composite layup and repair - in a fast-paced R&D environment.

Key Responsibilities

• Fabricate, fit, and assemble prototype components to engineering drawings and verbal instructions.
• Perform manual machining operations (lathe, mill) for low-volume prototype parts and fixtures.
• Execute TIG and MIG welding on metallic components; perform tack, finish, and cleanup to assembly standards.
• Prepare, lay up, and cure composite parts; perform repairs and trimming as directed.
• Read and interpret engineering drawings, CAD prints, and inspection criteria.
• Support first-article builds, bench and lab tests, and iterative design changes.
• Perform basic inspection and dimensional checks; document work and non-conformances.
• Maintain clean, organized work area and follow shop safety and quality procedures.
• Collaborate with engineers to suggest manufacturability or assembly improvements.
• Assist in tooling fabrication, jigs, and fixtures as required.

Required Qualifications

Preferred Qualifications / Nice-to-Have

Physical & Other Requirements

Why Join Us

Work at the cutting edge of hypersonics development in a collaborative R&D environment where your workmanship directly impacts prototype performance and test outcomes.

Leadership Qualities

ITAR Requirements

Employment with Castelion is governed on the basis of competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin / ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.

All employees are granted long-term stock incentives as part of their employment at Castelion. All employees receive access to comprehensive medical, vision, and dental insurance, and the company offers four weeks of paid time off per year.