Lead Test Engineer - Nuclear Hardware & Systems

Radiant; El Segundo (CA); On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

Stock options

Medical coverage

One Medical

Vision coverage

Dental coverage

Life insurance

Parental leave

Educational program with Penn State

Job summary

Radiant in El Segundo, CA is seeking a Lead, Test Engineering to own strategy and team leadership for testing Kaleidos hardware and systems. This hands-on role requires direct management of test engineers and collaboration across design, analysis, materials, and manufacturing.

You will build the test site from the ground up, define objectives, instrumentation strategies, and data requirements, and ensure safety, quality, and rapid iteration toward production readiness.

Qualifications

• Bachelor’s or Master’s degree in Mechanical Engineering or a related field.
• 8+ years in testing, development, or validation of complex mechanical systems.
• Hands-on experience building test setups for high-energy or high-temperature hardware.
• Experience with leak testing and data acquisition systems.

Responsibilities

• Lead requirements definition, design, and implementation of test hardware and fixtures.
• Build, commission, calibrate, and maintain test capabilities across thermal, materials, mechanical, structural, and leak/flow disciplines.
• Define operating procedures, safety controls, and facility readiness for high-energy environments.
• Own and lead the test strategy across development, qualification, and production acceptance phases.
• Plan and execute development, qualification, and acceptance tests, and analyze results.

Skills

Mechanical testing

Data analysis

Technical leadership

Cross-functional collaboration

Education

Bachelor’s or Master’s in Mechanical Engineering

Tools

LabVIEW

Python

MATLAB

Instrumentation design

Job description

Radiant in El Segundo, CA is seeking a Lead, Test Engineering to own strategy and team leadership for testing Kaleidos hardware and systems. This hands-on role requires direct management of test engineers and collaboration across design, analysis, materials, and manufacturing.

You will build the test site from the ground up, define objectives, instrumentation strategies, and data requirements, and ensure safety, quality, and rapid iteration toward production readiness.