Joblaze summary

The Harness Design Engineer at Radiant is responsible for the design and integration of electrical wire harnesses, collaborating closely with mechanical and electrical engineers to tackle complex system architecture challenges. Key skills include proficiency in harness design tools like Zuken E3 Cable, a solid understanding of electrical systems, and hands-on experience in manufacturing environments. This role is suited for candidates with at least three years of relevant experience, particularly those familiar with high-reliability applications in demanding conditions. Radiant, a startup focused on innovative nuclear solutions, emphasizes a hands-on approach in its fast-paced development en

Joblaze insights

Listed yesterday — first seen on Joblaze November 12, 2026. Last confirmed on Radiant's careers page November 12, 2026.
Siemens NX appears in 1.6% of 3417 comparable mid other roles in United States; EPlan appears in 0.5% of 3417 comparable mid other roles in United States.

Quick facts

Is the Harness Design Engineer role remote?: No — this is an on-site role in El Segundo, CA, United States.
How much experience is required?: 3–5 years of relevant experience for this Harness Design Engineer role.
Where is the role based?: Radiant is hiring for this position in El Segundo, CA, United States.
What's the tech stack?: Joblaze extracted these technologies from the posting: EPlan, Siemens NX, Zuken E3 Cable.
What seniority level is this role?: Radiant targets mid-level candidates for this position.
Is this full-time or contract?: Full-time for this Harness Design Engineer role at Radiant.

From the original posting

About the Role

Radiant is seeking a Harness Design Engineer to support the design, build, and integration of electrical wire harnesses in a fast-paced startup environment. You’ll work alongside experienced mechanical and electrical engineers to solve challenging problems in system architecture, sensor/actuator selection, packaging, and system integration for advanced hardware. This role offers hands-on exposure to end-to-end hardware development from CAD and analysis through build, test, and validation.

Responsibilities & Duties:

Own the design of the harnessing system from concept to integration, and serve as the subject matter expert on the interconnection between electrical and hardware systems.
Create harness drawings for manufacturing and act as the primary point of contact for the harness manufacturing team.
Support the creation of the reactor electrical schematics using Zuken E3 Cable and maintain the pinout tables throughout the design cycle.
Make decisions about conductor sizing, wire type, and shielding methods for low and high voltage using industry standards for guidance.
Use an understanding of electrical failure mechanisms, including voltage drop, thermal effects, and interference, to identify and mitigate risks.
Select materials, with support from the materials team, for harnessing in challenging environments across the reactor.
Support technicians with harness integration on the reactor as the system owner.
Work with the electrical team to commission the system and troubleshoot issues across the reactor.
Provide nonconformance solutions throughout the build and integration phases of development to limit program delays and maximize system uptime.

Required Qualifications & Skills:

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.

Desired Qualifications & Skills:

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.

Additional Requirements:

Must be willing to work extended hours and weekends as necessary to accomplish our mission.

Benefits and Perks

Stock: Substantial incentive stock plan for all full-time employees.
Daily catered lunch. Free snacks and drinks.
Flexible PTO policy. Remote workday allocation.

Standard company text repeated across Radiant's postings is omitted here.

Harness Design Engineer