Senior Mechanical Engineer – Turbomachinery Rotordynamics

Radiant; El Segundo (CA); On-site; USD 158,000 - 247,275; Full time

Benefits offered by this job

Substantial incentive stock plan

100% medical coverage up to silver level

Sponsored memberships for One Medical

Daily catered lunch

Flexible PTO policy

Company bonding events

Job summary

A leading technology firm in California is looking for a highly motivated engineer to join their team. This role involves designing and testing turbomachinery for power generation. Ideal candidates will have a strong background in rotordynamics and hands-on experience with testing. Responsibilities include rotor-bearing analysis, selecting bearings, and preparing technical documents. The position requires onsite work in El Segundo and offers substantial benefits including competitive compensation and stock options.

Qualifications

• 5+ years of experience in the design and analysis of turbomachinery.
• Strong understanding of rotordynamic principles and tools.
• Hands-on experience testing real hardware.

Responsibilities

• Design, build, and test turbomachinery for power generation systems.
• Perform dynamic analysis of rotor-bearing systems.
• Select appropriate bearing types based on operating conditions.

Skills

Rotordynamic principles

Technical communication

Problem-solving

Organizational skills

Education

Bachelor's or Master’s degree in Mechanical Engineering

Tools

XLrotor

Dyrobes

Job description

Radiant is seeking a highly motivated engineer to join the team responsible for the power generation and primary cooling turbomachinery of our Kaleidos product. This role involves performing the rotordynamic analysis and bearing selection of high-speed rotating machinery including compressors, turbines, and pumps for high-temperature applications. The ideal candidate will have a strong background in rotordynamics and bearing selection, along with hands‑on experience testing real hardware.

Responsibilities and Duties:

• Design, build, and test turbomachinery for Radiant’s power generation systems.
• Perform dynamic analysis of rotor‑bearing systems to evaluate vibrational behavior, stability, and resonance characteristics.
• Conduct critical speed analysis, Campbell diagram analysis, and stability assessments to optimize rotor system design for minimal vibration and resonance.
• Analyze rotor response under transient operating conditions, including startup, shutdown, and off‑design operations.
• Select appropriate bearing types (e.g., rolling element, fluid film, magnetic) based on operating conditions and performance requirements. Evaluate bearing loads, life, and thermal performance.
• Prepare technical reports, design documentation, and presentation materials.
• Support the build and testing of prototype, first article, and production hardware.

Required Qualifications and Skills:

• Bachelor’s or Master’s degree in Mechanical Engineering or a related field.
• 5+ years of experience in the design and analysis of turbomachinery, rotating equipment, or mechanisms.
• Strong understanding of rotordynamic principles and tools (e.g., XLrotor, Dyrobes, or equivalent).
• Excellent problem‑solving, technical communication, and organizational skills.

Desired Qualifications and Skills:

• Prior experience with power generation applications.
• Knowledge of bearing selection for high‑temperature, high‑speed applications.
• Hands‑on experience with turbomachinery testing and instrumentation.
• Familiarity with relevant industry standards (API, ASME, ISO).
• Prior nuclear experience is not required for this role.

Additional Requirements:

• Must be willing to work extended hours and weekends as necessary to accomplish our mission.
• Must work 100% onsite at El Segundo HQ.

Benefits And Perks:

• Stock: Substantial incentive stock plan for all full‑time employees.
• Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.
• One Medical: Sponsored memberships for employees and their dependents.
• Vision: 100% top tier plan coverage + 50% for dependents.
• Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.
• Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits.
• 8‑weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees.
• Daily catered lunch. Free snacks and drinks.
• Flexible PTO policy. Remote workday allocation.
• Company and team‑bonding events, happy hours and in‑person camaraderie.
• Beautiful El Segundo headquarters close to the Pacific Ocean.

Total Compensation And Benefits:

Radiant compensates people for impact and invests in those who continue to raise the bar. Radiant’s new hire compensation package includes base salary, substantial equity grants, and comprehensive health benefits. Total compensation and level are determined through a rigorous evaluation of interview performance, experience, education, and qualifications, and are designed to support continued growth as scope, responsibility, and impact expand at Radiant.

The best of today’s advanced reactor builders don’t wait for job postings. They join the winning team.

We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.

Unfortunately, we are unable to provide visa sponsorship at this time.

This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.

Compensation Range: $158,000 - $247,275

If you're ready to contribute to accelerated nuclear innovation, contact us directly for immediate opportunities: [e-mail].