Senior Production Technician – Bonding Torrance, CA LA Manufacturing

Castelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus, ownership, and excellence are decisive advantages - and we're building a world-class team to turn bold ideas into real capability.

This is a rare opportunity to join at an early stage, where you'll have significant ownership, collaborate with exceptional teammates, and make a direct, measurable impact on our mission and the future of the company - regardless of your function.

Castelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus, ownership, and excellence are decisive advantages - and we're building a world-class team to turn bold ideas into real capability.

This is a rare opportunity to join at an early stage, where you'll have significant ownership, collaborate with exceptional teammates, and make a direct, measurable impact on our mission and the future of the company - regardless of your function.

As a Production Technician - Bonding, you will play a key role in executing high-rate assembly builds for Nozzles, Flex joints, and casted components supporting Castelion's flight and production activities in 2026. You will help standardize production processes, build out the production area, and implement the tools, fixtures, and mechanisms needed to efficiently produce bonded assemblies at high volume. This hands-on role is critical to ensuring timely, high-quality delivery of numerous vehicles throughout the year.

• Execute complex aerospace bonded assembly builds in support of Castelion's flight and high-rate production objectives.
• Perform repeatable, high-quality bonded-assembly operations while meeting production rate, schedule, quality, and safety requirements.
• Help transition bonded assembly build processes into standardized, production-ready work instructions and processes for high-volume output.
• Assist with developing and implementing tooling, fixtures, workstations, and infrastructure necessary to execute efficient production builds.
• Identify opportunities to improve cycle time, first-pass yield, line balance, and overall production efficiency.
• Ensure shop equipment is well-maintained and calibrated where necessary, and maintain an organized, safe production area.

• High school diploma or equivalency certificate.
• 3+ years of professional experience in a manufacturing/production environment
• Experience bonding components using RTVs, epoxies, or silicones
• Ability to use computer systems to support process transactions and quality management processes.
• Ability to interpret drawings and specifications; complete travelers; and use visual aids and procedures as products are built.
• Ability to stand for extended periods.
• Ability to lift up to 35 lbs.
• Ability to walk throughout the facility and on uneven terrain.
• Ability to perform repetitive motions with hands and arms.

• 5+ years in aerospace manufacturing, with a focus on bonding or composites
• Demonstrated ability to read, interpret, and work from drawings, controlled documentation, and processes such as layout drawings, mechanical drawings, assembly procedures and work instructions, schematics, engineering drawings, and parts lists.
• Experience with MES software and electronic production records.
• Experience working in a high-rate or high-volume production environment with measurable output, takt time, and throughput goals.
• Experience with production tooling, fixtures, work instructions, line balancing, or standardized work.
• Excellent communication and organizational skills.
• Experience with AS9100 or equivalent quality management systems.
• Experience with 5S practices.
• Strong organizational skills, attention to detail, effective time management, and the ability to work with minimal supervision.

• Castelion offers a generous benefits package. Please refer to the bottom of our Careers page for more details.

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee. Duties, responsibilities and activities may change at any time with or without notice.

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this…