Senior R&D Technician - Mechanisms

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 're designing, building, and testing next generation long range strike weapons systems to give America and its Allies a definitive edge and deter future conflicts.

As a Sr. R&D Technician – Mechanisms, you will play a key role in executing assembly builds for all CAS and TVCA components supporting flight and development activities in 2026. You will help establish production-ready processes, build out the production area, and implement the tools and mechanisms needed to efficiently produce assemblies s role is hands‑on and critical to ensure timely, high-quality delivery of numerous vehicles throughout the year.

• Execute on complex aerospace mechanism builds in support of Castelion's flight objectives.
• Bring mechanism build processes from development to production ready.
• Assist in developing tooling and infrastructure necessary to execute on production builds.
• Mentor lower‑level engineers and technicians regarding industry best practice in developing manufacturing processes.
• Troubleshoot issues that arise during development builds and implement corrective actions.
• Perform simple rework operations on manual mills and lathes.
• Perform test set up necessary to characterize, ATP and qualify flight mechanisms.
• Run functional testing of flight mechanisms.
• Ensure shop equipment is well maintained and calibrated where necessary.

• High school diploma or equivalency certificate
• 5+ years of hands‑on mechanical experience in one or more of the following: testing of aerospace/automotive systems, maintenance/troubleshooting complex mechanical systems, and/or fabrication/assembly of complex electromechanical systems.
• Ability to stand for extended periods
• Ability to lift up to 75 lbs
• Ability to walk throughout the facility and on uneven terrain
• Ability to climb ladders and in and out of motor vehicles
• Ability to perform repetitive motions with hands and arms
• Ability to work outdoors in both hot and cold climates

• 6+ years in aerospace manufacturing, with a focus on electro‑mechanical mechanisms or complex mechanical assemblies.
• Associate degree
• A&P License.
• Demonstrated ability to read, interpret and work from drawings, controlled documentation and processes such as: layout drawings, mechanical drawings, assembly procedures/work instructions; schematics, engineering drawings, and parts list
• Experience with MES software.
• Excellent communication and organizational skills.
• High proficiency with lathes and 3 axis mills.

Desire and experience questioning assumptions in ways that lead to breakthrough ideas that are ultimately implemented. Successfully bring in applicable processes/concepts/materials from other industries to achieve efficiency gains. Ability to personally resolve minor issues in development without requiring significant support.

A successful candidate will have a genuine passion for Castelion's mission and consistently look for ways to contribute to the company's technical goals and prevent hardware blockers. Ability to work in a fast paced, autonomously driven, and demanding atmosphere. Strong sense of accountability and integrity.

Proactively communicates blockers. Trusted in previous roles to be voice of company with regulators, suppliers, gate keepers and customers. Capable of tactfully managing relationships with stakeholders to achieve company‑desired outcomes without…