Radiant · 1 day ago
Loads & Dynamics Engineer
El Segundo, California, United States
Full-time
Onsite
Mid Level
3+ years expRadiant is an El Segundo-based startup focused on building portable nuclear microreactors. The Loads & Dynamics Engineer will be responsible for executing structural loads, vibration, and dynamic analyses for the Kaleidos microreactor, ensuring its structural integrity throughout its lifecycle.
Clean EnergyEnergyEnergy EfficiencyRenewable Energy
No H1B
U.S. Citizen Only
Responsibilities
Develop and own static, dynamic, and transient loads for reactor systems, support structures, and transport configurations
Perform structural dynamics analyses, including modal, random vibration, shock, sine vibration, and fatigue assessments
Implement explicit dynamics simulations to model nonlinear reactor response under transient seismic and transportation event cases
Define and analyze transportation and handling environments, including shock and vibration from road, rail, air, or sea transport
Generate load cases and environments to support structural sizing, design margins, and verification plans
Conduct finite element analyses (FEA) using tools such as ANSYS, Abaqus, or similar tools
Collaborate with design engineers to influence hardware architecture, material selection, and joint design
Support test planning and correlation, including shaker tests, modal surveys, and structural verification testing
Develop and maintain analysis documentation, reports, and requirements for internal reviews and regulatory interfaces
Contribute to failure investigations, root cause analyses, and design improvements
Help establish best practices for loads, dynamics, and structural verification within a growing engineering organization
Qualification
Required
Bachelor's degree in Mechanical Engineering, Aerospace Engineering, Structural Engineering, or a related field
3+ years of experience in loads, dynamics, or structural analysis for complex mechanical systems
Strong fundamentals in structural mechanics, dynamics, and vibration
Experience with finite element modeling and analysis of metallic and composite structures
Proficiency with industry-standard FEA tools (e.g., ANSYS, Abaqus, Nastran)
Familiarity with design allowables, safety factors, and margin-of-safety methodologies
Ability to work cross-functionally and communicate analysis results clearly to both technical and non-technical stakeholders
Preferred
Experience in aerospace, launch, defense, nuclear, or heavy industrial hardware environments
Dynamics modeling software experience (LD-Dyna, Abaqus explicit, or other)
Background in shock and vibration testing and test-article correlation
Knowledge of fatigue, fracture mechanics, and bolted joint analysis
Experience defining or interpreting environmental specifications and requirements
Master's degree or PhD in a relevant engineering discipline
Familiarity with nuclear, spaceflight, or safety-critical system requirements
Benefits
Substantial incentive stock plan for all full-time employees.
100% premium coverage for base Silver level plan for employee + 50% premium coverage for dependents. Platinum plans available.
Sponsored memberships for eligible employees and their dependents.
100% premium coverage for top tier plan + 50% for dependents.
100% premium coverage for top tier plan (including orthodontia) + 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.
Company
Radiant
Radiant develops portable nuclear microreactors designed to generate electricity and heat in a compact, factory-built form.
51-200 employees
Funding
Current Stage
Late StageTotal Funding
$518.82MKey Investors
Andreessen HorowitzUnion Square Ventures
2025-12-17Series D· $300M
2024-11-14Series C· $165M
2023-04-18Series B· $40M
Leadership Team
Doug Bernauer
Chief Executive Officer
Recent News
alleywatch.com
2026-01-23
2026-01-07
The Motley Fool
2026-01-04
Company data provided by crunchbase