Staff Loads & Dynamics Engineer - Onsite Nuclear Systems

Radiant Industries, Inc.; El Segundo (CA); On-site; USD 130,000 - 180,000; Full time

Benefits offered by this job

Stock plan

Medical coverage

One Medical

Vision coverage

Dental coverage

Voluntary benefits

Parental leave

Lunch provided

Flexible PTO

Team events

On-site HQ near ocean

Job summary

Radiant is seeking a Staff Loads & Dynamics Engineer to own static, dynamic, and transient loads for Kaleidos, the world’s first portable nuclear microreactor, and supporting hardware. You will ensure structural integrity across manufacturing, transportation, and deployment environments.

This hands-on role requires collaboration with structures, mechanical design, thermal, nuclear, and test teams in a fast-paced environment. On-site work at El Segundo HQ is required.

Qualifications

• Bachelor’s degree in Mechanical Engineering, Aerospace Engineering, Structural Engineering, or related field.
• 5+ years of loads, dynamics, or structural analysis experience 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 communicate analysis results clearly to technical and non-technical stakeholders.

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.

Skills

Loads & dynamics

Structural analysis

Vibration analysis

Cross-functional comms

Finite element modeling

Education

Bachelor degree in Mechanical Engineering

Tools

ANSYS

Abaqus

Nastran

Job description

Radiant is seeking a Staff Loads & Dynamics Engineer to own static, dynamic, and transient loads for Kaleidos, the world’s first portable nuclear microreactor, and supporting hardware. You will ensure structural integrity across manufacturing, transportation, and deployment environments.

This hands-on role requires collaboration with structures, mechanical design, thermal, nuclear, and test teams in a fast-paced environment. On-site work at El Segundo HQ is required.