Loads & Dynamics Engineer

Role Overview

Radiant is seeking a Loads & Dynamics Engineer to own and execute structural loads, vibration, and dynamic analyses for complex mechanical systems associated for Kaleidos, the worlds first portable microreactor and supporting hardware. You will play a critical role in ensuring structural integrity and survivability across all phases of the product lifecycle, including manufacturing, transportation, handling, deployment, and operational environments.

This role requires a hands-on engineer who is comfortable working in ambiguous, fast-paced environments and collaborating closely with structures, mechanical design, thermal, nuclear, and test teams.

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

Required Qualifications

• 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 Qualifications

• 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