Harness Design Engineer

The role

You will design, build, and integrate electrical wire harnesses for nuclear microreactors. You will work with mechanical and electrical engineers on system architecture, sensor selection, and hardware integration.

What you will do

• Own the design of the harnessing system from concept to integration.
• Create harness drawings for manufacturing.
• Act as the primary point of contact for the harness manufacturing team.
• Support the creation of reactor electrical schematics using Zuken E3 Cable.
• Maintain pinout tables throughout the design cycle.
• Make decisions about conductor sizing, wire type, and shielding methods.
• Select materials for harnessing in challenging environments.
• Support technicians with harness integration on the reactor.
• Work with the electrical team to commission the system and troubleshoot issues.
• Provide nonconformance solutions during build and integration phases.

Required qualifications

• Bachelor’s degree in Electrical Engineering, Mechanical Engineering, or a closely related field from an accredited institution.
• 3+ Years of professional hands-on harness design or manufacturing experience.
• Strong understanding of harnessing architecture, grounding schemas, power requirements, and shielding.
• Strong understanding of electrical systems and the ability to interpret schematics.
• Proficiency with analog instrumentation including 4-20mA sensors, accelerometers, resolvers, RTDs, and thermocouples.
• Experience with Zuken E3 Cable, EPLAN, or similar harness design and schematic capture tools.
• Proficiency with inductive devices such as solenoid valves.
• Familiarity with Siemens NX or similar 3D CAD tools.
• Basic understanding of high-voltage systems up to 1000 volts.
• Must work 100% onsite at El Segundo HQ.

Nice to have

• 5+ Years of professional hands-on harness design or manufacturing experience.
• Harness design for high-reliability or harsh environments (nuclear, aerospace, defense, or industrial), including radiation, thermal cycling, or vibration exposure.
• Familiarity with industry harnessing standards such as IPC/WHMA-A-620, SAE AS50881, or NEC/NFPA requirements.
• Hands-on experience supporting harness build and integration on the floor, including troubleshooting and nonconformance resolution during commissioning.

Benefits

• Substantial incentive stock plan for all full-time employees.
• Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.
• One Medical: Sponsored memberships for employees and their dependents.
• Vision: 100% top tier plan coverage + 50% for dependents.
• Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.
• Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits.
• 8-weeks of paid parental leave for all parents.
• Additional paid pregnancy leave for CA employees.
• Nuclear Engineering Certificate Program: 100% covered educational program with Penn State University, for eligible employees.
• Daily catered lunch.
• Free snacks and drinks.
• Flexible PTO policy.

Before you apply

• Any job offer will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.

About the company

Radiant is an El Segundo, CA-based company building the world's only mass-produced, transportable nuclear microreactors. Founded in 2020, Radiant is under contract to deliver power to the U.S. Army, Navy and Air Force.