Senior Manufacturing Engineer, Filament Winding

Castelion Corporation • Torrance, CA

9h • Onsite

About The Position

Castelion is seeking a senior-level Manufacturing Engineer to own the development and qualification of manufacturing processes, tooling, and documentation required for filament wound components. This engineer will be responsible for releasing work instructions and delivering the first test-ready hardware, such as motor cases, nozzles, or exit cones. The role also involves owning and documenting all filament winding process knowledge, including winding, bonding, curing, and post-processing, as well as supporting design teams with DFM guidance and manufacturability improvements.

Requirements

• Bachelor's in engineering
• 3+ years of composite manufacturing or filament winding experience

Nice To Haves

• Master's in engineering
• 5+ years of composite manufacturing or filament winding experience

Responsibilities

• Define, document, and release manufacturing procedures, work instructions, tooling, and process flows for in-house production of filament wound components including motor cases, nozzles, exit cones, and related structures.
• Design and develop mandrels and production tooling for filament wound components.
• Develop and implement novel mandrel and tooling solutions where required (e.g., collapsible mandrels, soluble mandrels, bladder tooling, or other removable tooling approaches).
• Deliver first test-ready filament wound hardware supporting program development.
• Define and control critical filament winding process parameters, including fiber tension, resin content, winding angles and patterns, cure profiles, etc.
• Develop and maintain filament winding machine programs required for production of each component.
• Define production readiness requirements for filament winding operations and support sourcing of required equipment and staffing to meet program build rates.
• Create and maintain special process documentation, including work instructions, operator training materials, and controlled process specifications.
• Define and support non-destructive testing (NDT) requirements such as proof/burst testing, ultrasonic inspection, and radiographic inspection.
• Support development of material allowables through testing, and manage material supplier qualification and lot acceptance testing.

Benefits

• Meaningful equity for all full-time employees
• Four (4) weeks of paid time off
• Ten (10) company paid holidays
• Medical plans at 100% employee covered and 80% of dependent coverage
• Dental & Vision: 90% employees and 80% for dependents
• FSA/HSA options
• 401k plan
• Paid Parental Leave: up to 10 weeks for birthing parents, up to 4 weeks for non-birthing parents (8 weeks for all parents, additional for CA employees)
• Frequently catered lunches and team meals
• Company-covered meals when extra time or effort is required
• $100 monthly fitness stipend
• Onsite electric vehicle charging

What This Job Offers

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