Senior Mechanical Engineer (Turbomachinery Rotordynamics)

• 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
• You’ll 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

Benefits

• Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans
• Equity: Substantial incentive stock plan for all salaried employees
• Flexible PTO policy
• Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits
• Vision: 100% coverage + 50% for dependents
• Dental: 100% coverage, orthodontia extra, 50% for dependent
• Team-bonding company outings, happy hours and in-person camaraderie
• Beautiful El Segundo headquarters close to the Pacific Ocean

• The ideal candidate will have a strong background in rotordynamics and bearing selection, along with hands-on experience testing real hardware
• 5+ years of experience in the design and analysis of turbomachinery, rotating equipment, or mechanisms
• Excellent problem-solving, technical communication, and organizational skills
• Strong understanding of rotordynamic principles and tools (e.g., XLrotor, Dyrobes, or equivalent)
• Bachelor’s or Master’s degree in Mechanical Engineering or a related field
• Knowledge of bearing selection for high-temperature, high-speed applications
• Prior experience with power generation applications
• Familiarity with relevant industry standards (API, ASME, ISO)
• Hands-on experience with turbomachinery testing and instrumentation
• Prior nuclear experience is not required for this role