Composites Technician - Filament Winding

Castelion Corporation•Torrance, CA

4d•Onsite

About The Position

Castelion is seeking a hands-on Composites Technician to support the fabrication of rocket motor cases, nozzles, and other advanced filament wound structures. This role focuses on operating winding equipment, executing composite manufacturing processes, and supporting rapid hardware development and production.

Requirements

High school diploma or equivalent.
4+ years of experience operating manufacturing or composite processing equipment.
Experience working with composite materials, resin systems, and fiber handling processes.
Familiarity with precision measuring equipment including calipers, micrometers, and gauges.
Ability to accurately follow written work instructions and manufacturing procedures.
Mechanical aptitude and ability to work with production tooling and fixtures.

Nice To Haves

Experience with filament winding, rocket hardware, or aerospace composite structures.
Experience operating industrial ovens or composite cure systems.
Ability to interpret engineering drawings and composite layup/winding requirements.
Experience supporting equipment setup, machine troubleshooting, or process optimization.
Comfortable working independently and collaboratively in a high-tempo manufacturing environment.
Experience with custom tooling or automated manufacturing systems.

Responsibilities

Prepare, set up, and operate filament winding equipment for composite hardware manufacturing.
Operate cure ovens and monitor cure cycles in accordance with process specifications.
Execute composite processing tasks including material preparation, resin handling, winding, curing, trimming, and inspection.
Read and interpret engineering drawings, manufacturing travelers, and process specifications.
Set up, adjust, and troubleshoot winding equipment, tooling, machine programs, and cure equipment.
Support development and refinement of winding patterns and manufacturing methods with engineering teams.
Inspect hardware for dimensional and visual quality requirements and perform rework when necessary.
Maintain clean and organized equipment, tooling, and production work areas.
Support fast-paced development and production builds while maintaining quality and safety standards.

Benefits

Employee Equity: Meaningful equity for all full-time employees - share value has increased 150x in three years
Personal Time Off: Four (4) weeks of paid time off to unplug, reset, and come back sharp—velocity matters, burnout doesn't
Company Paid Holidays: Ten (10) company paid holidays
Medical: We offer plans at 100% employee covered and 80% of dependent coverage
Dental & Vision: We cover 90% employees and 80% for dependents to ensure you and your family have access to quality preventive and ongoing care
FSA/HSA: To support long-term health and financial resilience, we offer FSA and HSA options that allow employees to set aside pre-tax dollars for eligible medical and dependent care expenses
Retirement: 401k plan offered to support long term financial growth along side high-impact, high-velocity work
Paid Parental Leave: We support growing families with meaningful time to bond and recover. Birthing parents are eligible for up to 10 weeks of paid leave, while non-birthing parents may take up to 4 weeks of paid leave. This time can be used for pre-natal care, pregnancy, childbirth, and related medical needs—ensuring every parent has the support they need during this important life moment.8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees
Meals & Catering: Frequently catered lunches and team meals, plus company-covered meals when extra time or effort is required
Snacks & Beverages: Fully stocked kitchen with unlimited snacks and drinks to keep you fueled throughout the day
$100 monthly fitness stipend to support peak performance and health, both inside and outside of work
EV Charging: Onsite electric vehicle charging available for employees