Senior Structures Engineer

The role

You will lead the design, analysis, and development of critical reactor structures. This includes core restraint mechanisms, control drum support, and primary heat exchanger vessel supports.

What you will do

• Perform thermal, mechanical, and structural analyses for reactor structural components.
• Define system architecture, operating limits, design margins, and concepts of operation.
• Develop engineering documentation including calculations, specifications, and design reports.
• Lead the design, fabrication, and execution of component- and system-level testing.
• Collaborate cross-functionally with reactor, thermal, manufacturing, licensing and procurement teams.
• Support supplier selection, technical evaluations, and design reviews.
• Present technical work at internal and external design reviews.
• Provide technical leadership throughout the design, analysis, testing, qualification, and deployment lifecycle.

Required qualifications

• Bachelor's degree in Mechanical Engineering, Aerospace Engineering, Nuclear Engineering, or a related engineering discipline.
• 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 (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 engineering teams and communicate technical concepts.
• Ability to work long hours and weekends as necessary to support critical milestones.

Nice to have

• 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 (FEA) 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.

Before you apply

• Applicant must be a U.S. citizen or national, U.S. lawful, permanent resident, Refugee, or Asylee, or be eligible to obtain required authorizations from the U.S. Department of State.

About the company

Antares is building mass-producible, inherently safe, deployable microreactors to make clean energy abundant. The team hails from organizations including SpaceX, the White House, the Pentagon, and various National Laboratories.