Castelion · 1 day ago
Manufacturing Engineer, Harnessing
Torrance, CA
Full-time
Onsite
Mid Level
3+ years expCastelion is bringing a new approach to defense development and production, focusing on short design cycles and modern manufacturing strategies. They are seeking a Manufacturing Engineer to lead the development and implementation of manufacturing processes for wiring harnesses and associated test plans, supporting the transition from prototype to scaled production.
AerospaceGovernmentManufacturingMilitaryNational Security
No H1B
U.S. Citizen OnlyHiring Manager
Andy R.
Responsibilities
Create and maintain work instructions, bill of materials (BOM/MBOM), harness assembly flows, test plans, fixture/tooling specifications, and manufacturing process documentation for prototype and production harness builds
Partner with supply chain to qualify and develop external harness fabrication partners, define quality/test criteria (continuity, insulation, functional, hi-pot), and support supplier readiness for production builds
Support design reviews with a focus on design for manufacturability (DFM), design for test (DFT), connector selection, harness routing, and supplier handoff readiness. Facilitate risk analysis and manufacturing readiness reviews (MRRs)
Develop and implement harness test procedures and systems for continuity, insulation resistance, high-pot/functional verification, environmental screening when required, and test data analysis
Drive yield improvement, throughput gains, defect reduction, and cost optimization through Lean and CI methodologies
Qualification
Required
Bachelors degree in Mechanical, Electrical, Manufacturing, or related Engineering discipline
3+ years of experience in manufacturing engineering with emphasis on wiring harness/cable assembly processes, fabrication, and test
Strong familiarity with harness standards (crimping, routing, strain relief techniques), electrical continuity/functional test methods, and assembly best practices
Hands-on experience developing manufacturing processes and work instructions for electromechanical hardware
Excellent written and verbal communication skills
Must be authorized to work in the U.S. and comply with ITAR eligibility requirements
To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State
Benefits
Long-term stock incentives
Comprehensive medical, vision, and dental insurance
Four weeks of paid time off per year
Company
Castelion
Castelion is a defense tech company that applies modern hardware development and manufacturing processes to national security challenges.
51-200 employees
Funding
Current Stage
Growth StageTotal Funding
$469.61MKey Investors
Lightspeed Venture PartnersSilicon Valley BankAndreessen Horowitz
2025-12-05Series B· $350M
2025-01-29Series A· $70M
2025-01-29Debt Financing· $30M
Leadership Team
Bryon Hargis
Founder // CEO
Andrew Kreitz
Co-Founder and CFO
Recent News
alleywatch.com
2026-01-23
Company data provided by crunchbase