Graduate Mechanical Engineer - Nuclear Microreactor Design

Decisive Point; El Segundo (CA); On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

Stock options

Medical plan

One Medical

Vision coverage

Dental coverage

Voluntary benefits

Parental leave (8 weeks)

Catered lunch

Flexible PTO

Team events

HQ near Pacific Ocean

Job summary

Radiant, based in El Segundo, CA, seeks a talented engineer to contribute to design, analysis, and testing of its portable nuclear microreactor. You will own deliverables from concept through build with guidance from senior engineers and collaborate across disciplines to accelerate development.

The role requires a strong foundation in engineering first principles and hands-on project experience, with CAD/analysis tools and lab instrumentation.

Qualifications

• BS or MS in Mechanical or Aerospace Engineering or related field.
• Graduating in December 2026 or Spring 2027.
• Strong engineering fundamentals across thermodynamics, fluids, statics, dynamics, materials.
• Hands-on design/build experience from projects, labs or internships.

Responsibilities

• Contribute to design, analysis, and testing of the microreactor.
• Own deliverables from concept through build and validation with guidance.
• Collaborate across disciplines to integrate designs and solve issues.
• Support system-level testing, troubleshooting, and design iteration for KDU.
• Communicate results via design reviews, reports, and presentations.

Skills

CAD proficiency

Analysis software

Lab instrumentation

Hands-on project experience

Education

Bachelor or Master in Mechanical or Aerospace Engineering

Tools

CAD

Finite element analysis

Instrumentation

Job description

Radiant, based in El Segundo, CA, seeks a talented engineer to contribute to design, analysis, and testing of its portable nuclear microreactor. You will own deliverables from concept through build with guidance from senior engineers and collaborate across disciplines to accelerate development.

The role requires a strong foundation in engineering first principles and hands-on project experience, with CAD/analysis tools and lab instrumentation.