Senior Turbomachinery Build Engineer (Onsite)

Radiant; El Segundo (CA); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Stock plan

Medical plan

Dental/Vision coverage

Paid parental leave

Life and disability coverage

Flexible PTO

Job summary

Radiant is seeking a Senior Build Engineer to lead the assembly, integration, and build execution of high-performance turbomachinery for our portable nuclear microreactor. This hands-on role requires strong mechanical fundamentals and precise assembly skills to translate designs into test-ready hardware.

You will own prototype builds, develop assembly processes, and collaborate with design, manufacturing, and test teams to improve reliability and repeatability as we move toward production.

Qualifications

• Bachelor's degree in Mechanical or Aerospace Engineering or related field.
• 5+ years in mechanical assembly, hardware integration, or build engineering of complex systems.
• Hands-on experience assembling, integrating, and troubleshooting precision mechanical hardware.
• Strong understanding of GD&T, tolerance stack-ups, fits, torque, and alignment.

Responsibilities

• Lead hands-on turbomachinery build, integration, and troubleshooting of complex hardware (compressors, turbines, rotors, motors, bearings, seals).
• Develop and optimize assembly processes, tooling, work instructions, and torque specs for rotating machinery.
• Collaborate with design, manufacturing, and test teams to improve manufacturability and build quality.
• Mentor junior engineers and technicians; drive first-article builds and investigations into root causes.

Skills

Mechanical assembly

Hardware integration

GD&T interpretation

3D CAD reading

First-principles problem-solving

Education

Bachelor's degree in Mechanical Engineering

Job description

Radiant is seeking a Senior Build Engineer to lead the assembly, integration, and build execution of high-performance turbomachinery for our portable nuclear microreactor. This hands-on role requires strong mechanical fundamentals and precise assembly skills to translate designs into test-ready hardware.

You will own prototype builds, develop assembly processes, and collaborate with design, manufacturing, and test teams to improve reliability and repeatability as we move toward production.