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Salary: USD 140,000 - 185,000 / annual
Antares is building mass-producible, inherently safe, deployable microreactors for terrestrial, underwater, and space applications. The company's mission is to make clean energy abundant from Earth to the Asteroid Belt, with a team drawn from SpaceX, the White House, the Pentagon, the Department of Energy, MIT, and national laboratories. Antares has raised over $600M in venture capital and holds hundreds of millions in contracts with military services, NASA, and the Department of Energy.
As a Senior Structures Engineer, 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.
Key responsibilities include:
- Perform thermal, mechanical, and structural analyses to support sizing, layout, and optimization of reactor structural components
- 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 for 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
- Collaborate cross-functionally with reactor, thermal, manufacturing, licensing, and procurement teams to ensure successful integration of structural systems
- 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 the design, analysis, testing, qualification, and deployment lifecycle
You will work in a highly constrained, multidisciplinary design environment supporting prototype fabrication, testing, qualification, and deployment. The ideal candidate has extensive experience designing complex structural systems in regulated industries and is passionate about solving challenging engineering problems from concept through hardware realization.
REQUIREMENTS:
Basic Qualifications:
- Bachelor's degree in Mechanical Engineering, Aerospace Engineering, Nuclear Engineering, or 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 to broad audiences
Preferred Qualifications:
- Master's degree or higher in Mechanical Engineering, Aerospace Engineering, Civil Engineering, Nuclear Engineering, or related discipline
- Demonstrated expertise in structural design with hand calculations, material selection, bolted and welded joint design, load path development, and thermo-mechanical trade studies
- Proficiency with structural analysis tools such as ANSYS Mechanical, Abaqus, Nastran, or equivalent 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
Additional Requirements:
- Ability to work long hours and weekends as necessary to support critical milestones
- Must be a U.S. citizen, national, lawful permanent resident, Refugee, or Asylee, or be eligible to obtain required authorizations from the U.S. Department of State (ITAR compliance)
