Senior Turbomachinery Engineer — Nuclear Brayton Systems

Radiant; El Segundo (CA); On-site; USD 180,000 - 240,000; Full time

Benefits offered by this job

Stock option plan

Medical coverage and benefits

One Medical memberships

Vision and dental coverage

Parental leave (8 weeks)

Job summary

Radiant in El Segundo, CA seeks a Staff Turbomachinery Engineer to own the turbomachinery mechanical system for a 1 MW Brayton-cycle power unit. You will drive rotor dynamics, tolerancing, and integration with electrical components, while leading testing and design reviews.

On-site role with high ownership and fast-paced development. You will collaborate with aero, thermal, manufacturing, and test teams, overseeing hardware through design, build, and validation cycles to ensure reliability and

Qualifications

• B.S. in Mechanical Engineering or related field.
• 8+ years designing high-speed rotating machinery.
• Deep expertise in structural analysis and mechanical design of turbomachinery.
• Experience with bearings, seals, and high-speed shafting design.
• Proficiency with analysis tools (e.g., ANSYS) and NX/Teamcenter for design, simulation, PLM.
• Strong tolerancing, GD&T and precise mechanical assembly knowledge.
• Hands-on experience through design, build, and test cycles.
• Ability to influence across cross-functional teams and communicate complex concepts.

Responsibilities

• Own the turbomachinery mechanical system as Responsible Engineer.
• Define architecture for high-speed rotating assemblies (up to ~30 krpm).
• Lead rotor dynamics, structural integrity, and life analysis for rotating parts.
• Define tolerances, fits, stack-ups, and alignment strategies.
• Collaborate with electrical engineering on rotor integration and coupling.
• Lead prototyping, testing, and validation of turbomachinery hardware.
• Provide technical guidance and reviews across the team; drive design decisions.

Skills

Turbomachinery design

Rotor dynamics

Structural analysis

Bearings & seals

High-speed shafting

GD&T

Hardware lifecycle

Prototyping & testing

Cross-functional collaboration

Technical judgment

Education

Bachelor's in Mechanical Engineering

MS or PhD in Mechanical Engineering

Tools

ANSYS

NX

Teamcenter

Job description

Radiant in El Segundo, CA seeks a Staff Turbomachinery Engineer to own the turbomachinery mechanical system for a 1 MW Brayton-cycle power unit. You will drive rotor dynamics, tolerancing, and integration with electrical components, while leading testing and design reviews.

On-site role with high ownership and fast-paced development. You will collaborate with aero, thermal, manufacturing, and test teams, overseeing hardware through design, build, and validation cycles to ensure reliability and