Radiant
Senior Test Engineer, Mechanical/Fluids
$134K–$185K
El Segundo, CA · On-site · Senior · Full-time · Posted Jul 10, 2026
- Experience
- 5+ years of full-time professional experience; no alternatives stated.
- Education
- Bachelor’s degree from an accredited institution in mechanical, manufacturing, or another related engineering discipline.
- Visa sponsorship
- Any job offer is contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.
About the job
Leads and supports test planning and execution for Kaleidos reactor hardware, translating engineering designs into safe, usable procedures and improving test operations.
What you'll do
- Conduct tests and collaborate with design engineers on test methods for complex mechanisms and structures.
- Support fluid, electrical, and structural hardware testing through development, qualification, and acceptance, including integration, inspections, and performance analysis.
- Improve test processes and data quality, identify suppliers, and maintain procedural compliance with DOE and NRC standards.
What they ask for
- 5+ years of full-time professional engineering problem-solving experience, including system design, analysis, or testing.
- Bachelor’s degree in mechanical, manufacturing, or another related engineering discipline.
- Background in a highly regulated industry, such as nuclear, aerospace, aviation, or maritime.
- Strong fundamentals in fluids and thermodynamics; demonstrated ability to lead projects and work independently.
Nice to have
- Experience operating in fast-paced test environments or designing, fabricating, or operating fluid systems.
- Experience with test procedures, instrumentation, test data analysis, test ground support equipment, or the listed software and controllers.
Pay
$133.5K – $184.8K (base salary; posting does not specify currency code); equity also offered
Tools
Ion, Epsilon3, NX CAD, Teamcenter, Beckhoff PLC Controllers
Model-written summary · the original posting is authoritative