About the role
Avionics Harness Design Engineer - Castelion Corporation | Career Page Avionics Harness Design Engineer Torrance, California, United States $ 130,000.00 - 160,000.00 (US Dollar) Apply for Position Or refer someone Job Openings Avionics Harness Design Engineer About the job Avionics Harness Design Engineer Why Cas telion, 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 and technical excellence are decisive advantages - and we are building a team that can deliver real capability, not just concepts. This is a rare opportunity to join at an early stage, where your work will directly shape critical systems, influence major technical decisions, and have immediate, real-world impact. Avionics Harness Design Engineer We are seeking an 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.
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 Basic
Qualifications Bachelor's or Master's 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 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.
Benefits And
Perks All full-time employees are granted meaningful long-term equity, sharing in the company's significant growth trajectory. We offer four (4) weeks of paid time off, ten (10) company-paid holidays, and comprehensive health
benefits - including 100% employee-covered medical and strong dependent coverage, along with dental and vision plans. We also provide paid parental leave to support growing families, a $100 monthly fitness stipend to promote health and performance, and onsite EV charging for convenience. In addition, employees enjoy
perks like catered meals, company-covered food during high-demand periods, and a fully stocked kitchen to stay fueled throughout the day. While this position does not currently require a U.S government-issued security clearance, it may in the near future. Therefore, the ability to obtain and maintain a U.S. government–issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. Affirmative Action/EEO Statement Employment with Castelion is governed on the basis of competence and
qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status. Apply for Position Or refer someone Share Facebook Line LinkedIn X (Formerly Twitter) Whatsapp Email Powered by Manatal
About Castelion
Castelion is a modern defense production company building long-range hypersonic strike systems to address a critical national security gap. Founded in 2021, Castelion was created in response to the recognized need for the United States to rapidly develop hypersonic capabilities to remain competitive with near-peer adversaries and deter future conflicts.
The company operates under the philosophy of "Peace through Deterrence" — building the weapons systems that ensure conflicts never need to happen. Castelion is one of the few companies in the hypersonics space that has moved beyond concepts to actual production deliverables, with government contracts across multiple branches of the military and a $23M+ Navy order for 50 units in calendar year 2027.
Backed by over $469M in funding from top-tier investors including Andreessen Horowitz, Lightspeed Venture Partners, and General Catalyst, Castelion is scaling rapidly. The company is building what it anticipates will become the preeminent hypersonics campus in the country — including a $150M, 1,000-acre solid rocket motor manufacturing facility in Rio Rancho, New Mexico, alongside its headquarters in Torrance, California.
Castelion's culture is defined by technical excellence, ownership, and velocity. Engineers own meaningful subsystems on the vehicle and are responsible for driving their success. The company follows a responsible engineering model inspired by SpaceX, where individuals choose the highest-value work and are empowered to cultivate resources and partnerships to deliver results. The engineering bar is exceptionally high — attracting elite talent who want to be surrounded by other elite talent.
Other roles at Castelion
Refer someone
Know someone great for this role?
Share your link. If they get hired through Standout, you get $3,000.
Job details
Location
torrance, ca
Funding
Total raised
$464M
Last stage
Growth
Investors
Founders
What happens next.
No applications, no recruiter spam. Just the intro.
Confirm the fit
A few questions to make sure this role is the right shape for you. Two minutes.
I pitch you to the company
I write the intro, send it to the founder, and handle the back-and-forth.
A meeting lands on your calendar
If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.