Senior Structures Engineer

Antares • Los Angeles, CA

1d • $145,000 - $190,000

About The Position

As a Senior Structures Engineer at Antares, you will lead the design, analysis, and development of critical reactor structures, including the core restraint mechanism, control drum support and mounting systems, primary heat exchanger vessel supports, and other safety-significant structural components. You will ensure these systems meet structural, thermal, and functional performance requirements throughout development, testing, and operation.

You will work with cross-functional teams to develop first-of-a-kind hardware in a highly constrained, multidisciplinary design environment, supporting prototype fabrication, testing, qualification, and deployment. The role is suited to an engineer with extensive experience designing complex structural systems in regulated industries and an interest in taking challenging engineering problems from concept through hardware realization.

Requirements

• Bachelor's degree in Mechanical Engineering, Aerospace Engineering, Nuclear Engineering, or a related engineering discipline.
• At least 5 years of professional experience designing, analyzing, and developing structural systems for demanding engineering 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 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.
• Ability to work effectively on multidisciplinary engineering teams and communicate technical concepts to technical and non-technical stakeholders.
• Ability to work long hours and weekends as necessary to support critical milestones.
• Must meet U.S. Government export-control requirements: be a U.S. citizen or national, lawful permanent resident, refugee, or asylee, or be eligible to obtain required U.S. Department of State authorizations.

Nice To Haves

• Master's degree or higher in Mechanical Engineering, Aerospace Engineering, Civil Engineering, Nuclear Engineering, or a related engineering discipline.
• Demonstrated expertise in structural design, including hand calculations, material selection, bolted and welded joint design, load path development, and thermo-mechanical trade studies.
• Proficiency with structural analysis and simulation tools such as ANSYS Mechanical, Abaqus, Nastran, or equivalent finite element analysis software.
• Strong understanding of material behavior and structural design considerations, including thermal stresses, creep, fatigue, fracture, buckling, corrosion, and high-temperature material performance.
• Experience designing hardware in accordance with ASME Boiler & Pressure Vessel Code, AISC, ACI, AWS, NASA, or other applicable structural and mechanical design standards.
• Experience serving as a Technical Lead or Responsible Engineer, leading multidisciplinary engineering efforts from concept development through design, testing, qualification, and hardware deployment.
• Experience developing first-of-a-kind hardware in highly regulated industries such as nuclear, aerospace, defense, energy, or other safety-critical applications.

Responsibilities

• Perform thermal, mechanical, and structural analyses to support sizing, layout, and optimization of reactor structural components, including the core restraint system, control drum mounting, primary heat exchanger vessel supports, and other structural systems.
• Define system architecture, operating limits, design margins, and concepts of operation to ensure reliable performance across operating conditions.
• Develop calculations, specifications, interface definitions, design reports, and technical justifications for design reviews, verification, and licensing activities.
• Lead the design, fabrication, and execution of component- and system-level testing, including development of test articles, test fixtures, instrumentation plans, and validation procedures.
• Collaborate with reactor, thermal, manufacturing, licensing, and procurement teams to integrate structural systems into the overall reactor design.
• Support supplier selection, technical evaluations, design reviews, and resolution of manufacturing, assembly, and installation issues.
• Present technical work at internal and external design reviews and provide technical leadership throughout design, analysis, testing, qualification, and deployment.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior