Why Castelion, Why Now 

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.  

Avionics Manufacturing Specialist, Harnessing 

Castelion is seeking an Avionics Manufacturing Specialist, Harnessing to develop, improve, and scale the manufacturing processes used to build flight-critical wiring harnesses and cable assemblies. 

You will work hands-on with engineering and production teams to turn complex electrical designs into repeatable, high-quality manufacturing processes. This role will help define how harnesses are fabricated, inspected, tested, and scaled as Castelion moves from development builds into higher-rate production. 

Responsibilities 

Develop and improve manufacturing processes for wiring harnesses, cable assemblies, and electrical interconnects 

Partner with design engineering to improve manufacturability, assembly efficiency, and reliability 

Develop tooling, fixtures, work instructions, and standardized manufacturing processes 

Support harness build, inspection, continuity testing, insulation resistance testing, and dielectric withstand testing 

Troubleshoot manufacturing defects and lead root-cause and corrective-action efforts 

Train and mentor technicians on workmanship standards and manufacturing processes 

Support new product introduction and transition new harness designs into production 

Identify opportunities to improve quality, cycle time, and production throughput 

Support supplier development and qualification for harness fabrication 

Basic Qualifications 

Experience manufacturing aerospace, automotive, defense, or other high-reliability wiring harnesses 

Strong understanding of crimping, soldering, shielding, splicing, routing, and connector assembly 

Experience developing or improving manufacturing processes 

Ability to interpret engineering drawings, schematics, and wiring diagrams 

Hands-on experience troubleshooting manufacturing issues 

Preferred Skills and Experience 

Experience with IPC/WHMA-A-620 or NASA workmanship standards 

Experience with automated harness test equipment 

Experience developing tooling, fixtures, and production processes 

Experience supporting aerospace or flight hardware 

Experience training or mentoring manufacturing technicians 

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

Other Duties 

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 job. Duties, responsibilities and activities may change at any time with or without notice. 

Additional Eligibility Requirements 

This position may require access to classified information or restricted U.S. Government sites, systems, or information, as determined by the Company and/or applicable U.S. Government requirements. If the position is so designated, your employment in the role may be contingent upon your ability to obtain and maintain the required U.S. Government security clearance or other government authorization, and to satisfy any citizenship or other eligibility requirements imposed by applicable law, regulation, executive order, or government contract requirements. You will be notified if and when such requirements apply. 

Affirmative Action/EEO Statement 

Castelion is an Equal Opportunity Employer. We are committed to providing equal employment opportunities to all applicants and employees without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, genetic information, protected veteran status, or any other characteristic protected by applicable federal, state, or local law. 

Castelion is committed to providing reasonable accommodations to qualified individuals with disabilities throughout the application and hiring process. If you require a reasonable accommodation to complete an application, participate in the interview process, or otherwise participate in the hiring process, please contact hr@castelion.com. Requests for accommodation will be considered on an individual basis and handled in accordance with applicable law. 

Castelion is committed to fostering a workplace where employment decisions are based on qualifications, business needs, and the ability to perform the essential functions of the role, with or without reasonable accommodation. 

EAR/ITAR Requirements 

This position requires access to export-controlled information, and as such, employment (or hiring of a contractor) is contingent upon the candidate’s ability to access all applicable export-controlled information without additional export licensing being required by the Bureau of Industry and Security and/or the Directorate of Defense Trade Controls.