Lead Structures Engineer - Nuclear Reactor Systems

53 Stations; Los Angeles, Northern (CA, KY); Hybrid; USD 130,000 - 190,000; Full time

Job summary

Antares is seeking a Senior Structures Engineer to lead design, analysis, and development of critical reactor structures, including core restraint mechanisms, control drum mounts, and PHX vessel supports. You will ensure structural, thermal, and functional performance from concept through deployment in a highly regulated environment.

The ideal candidate has 5+ years designing complex structural systems for demanding applications, strong FEA experience, and familiarity with ASME and related

Qualifications

• Bachelor's degree in Mechanical Engineering, Aerospace Engineering, Nuclear Engineering, or related discipline.
• 5+ years of professional experience designing, analyzing, and developing structural systems for demanding applications.
• Experience in structural design, including hand calculations, material selection, bolted and welded joint design, load path development, and thermo-mechanical trade studies.
• Experience using finite element analysis (FEA) tools to evaluate structural performance, stress, deformation, fatigue, and thermal loading.
• Knowledge of structural design principles, materials, bolted and welded joints, and load path development.
• Demonstrated ability to work effectively on multidisciplinary teams and communicate technical concepts to a broad range of stakeholders.

Responsibilities

• Perform thermal, mechanical, and structural analyses to support the sizing, layout, and optimization of reactor structural components, including the core restraint system, control drum mounting, PHX vessel supports, and other structural systems as required.
• Define system architecture, operating limits, design margins, and concepts of operation (CONOPS) to ensure reliable performance across all operating conditions.
• Develop engineering documentation, including calculations, specifications, interface definitions, design reports, and technical justifications to support design reviews, verification, and licensing activities.
• Lead the design, fabrication, and execution of component- and system-level testing by developing test articles, test fixtures, instrumentation plans, and validation procedures to demonstrate performance, durability, and life-cycle reliability.
• Collaborate cross-functionally with reactor, thermal, manufacturing, licensing and procurement teams to ensure successful integration of structural systems into the overall reactor design.
• Support supplier selection, technical evaluations, design reviews, and the resolution of manufacturing, assembly, and installation issues.
• Present technical work at internal and external design reviews and provide technical leadership throughout the design, analysis, testing, qualification, and deployment lifecycle.

Skills

FEA

Structural design

Thermal analysis

Cross-functional collaboration

Education

Bachelor's degree in Mechanical Engineering

Bachelor's degree in Aerospace Engineering

Bachelor's degree in Nuclear Engineering

Tools

ANSYS Mechanical

Abaqus

Nastran

Job description

Antares is seeking a Senior Structures Engineer to lead design, analysis, and development of critical reactor structures, including core restraint mechanisms, control drum mounts, and PHX vessel supports. You will ensure structural, thermal, and functional performance from concept through deployment in a highly regulated environment.

The ideal candidate has 5+ years designing complex structural systems for demanding applications, strong FEA experience, and familiarity with ASME and related