Senior Avionics Harness Design Engineer

Castelion Corporation • Torrance, CA

4d

About The Position

Castelion is bringing a new approach to defense development and production: one that focuses on short, iterative design cycles, rapid testing in development, and modern commercial manufacturing strategies for production at scale. We're designing, building, and testing next generation long range strike weapons systems to give America and its Allies a definitive edge and deter future conflicts. We are seeking a Senior Avionics Harness Design Engineer to lead the design, development, and integration of electrical harnessing across our missile and vehicle systems. This engineer will play a critical role in ensuring robust, manufacturable, and high-reliability electrical connectivity throughout the system. You will partner closely with avionics, power, structures, and propulsion teams to deliver mission-critical hardware in a fast-paced, hardware-rich environment. You will additionally support avionics and harness integration at the system and vehicle levels.

Requirements

• Bachelors or Masters degree in Electrical Engineering, Mechanical Engineering, Aerospace Engineering, or related field
• 2+ years of experience in cable harness design for aerospace, defense, or high-reliability hardware systems
• Proficiency with CAD/ECAD tools for harness design (e.g., CATIA, Creo, SolidWorks Electrical, Capital, RapidHarness, AutoCAD, or equivalent)
• Strong knowledge of aerospace wiring standards (e.g., IPC/WHMA-A-620, NASA-STD-8739, or MIL-SPEC requirements)
• Familiarity with harnessing in environments with high thermal and small volume requirements
• Hands-on experience supporting harness manufacturing, assembly, and testing
• Ability to work cross-functionally with avionics, power, propulsion, and integration teams
• Strong problem-solving and troubleshooting skills in test and integration environments

Responsibilities

• Design, route, and document electrical harnesses to support missile and vehicle system integration
• Generate wiring diagrams, schematics, and harness assembly drawings in accordance with aerospace standards
• Select appropriate wires, connectors, backshells, shielding, and protection materials to meet environmental and system requirements
• Collaborate with avionics, power, and structural engineering teams to ensure proper integration of harnesses into overall vehicle design
• Develop and maintain harness BOMs (bill of materials) and ensure manufacturability at scale
• Support harness build, installation, and troubleshooting during integration and testing
• Ensure designs meet electrical, mechanical, and thermal requirements for high-reliability aerospace applications
• Identify and implement process improvements to increase efficiency, manufacturability, and quality

Benefits

• Competitive compensation, equity, and benefits package
• All employees are granted long-term stock incentives as part of their employment as Castelion.
• All employees receive access to comprehensive medical, vision, and dental insurance, and the company offers four weeks of paid time off per year.

What This Job Offers

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