Senior Nuclear Engineer

The role

You will serve as a responsible engineer for key components of the Antares reactor design. You will lead neutronics modeling, mentor junior engineers, and coordinate validation and verification activities.

What you will do

• Lead complex neutronics modeling and Multiphysics analysis
• Responsible nuclear engineer for design and integration of components as assigned
• Mentor junior engineers
• Develop and implement modeling and simulation methods and tools
• Coordinate validation and verification activities
• Interface directly with regulatory bodies for licensing and compliance
• Spearhead prototype testing and experimental campaigns
• Lead cross-disciplinary integration efforts across neutronics, thermal-hydraulics, structural mechanics, materials, and reactor operations
• Identify and define validation, verification, qualification, and testing requirements

Required qualifications

• Master's or Ph.D. in Nuclear Engineering, Physics, or related field
• Deep experience with and understanding of MCNP, Serpent, or SCALE
• Experience with Multiphysics simulations and methods (thermal-hydraulics, structural, heat transfer), reactor kinetics, safety analysis, or integrated systems modeling

Nice to have

• Advanced programming proficiency (Python, C++, or similar)
• Experience designing or developing high temperature gas reactors, heat pipe cooled reactors, microreactors, TRISO fuel, or other advanced reactors
• Strong leadership and mentorship skills
• Demonstrated success in regulatory processes (DOE, NRC, DoD)
• Previous experience at dynamic tech companies or startups
• Experience with advanced reactor transient and systems analysis tools such as SAM, AGREE, PARCS, or equivalent nuclear systems codes
• Experience with reactor commissioning, startup testing, power ascension testing, and operational readiness activities for nuclear systems
• Deep understanding of reactor shielding design, radiation transport analysis, and variance reduction methodologies, including experience with ADVANTG, MAVRIC, Attila4MC, or equivalent tools
• Experience performing integrated nuclear-thermal-mechanical analyses for reactor structures and components
• Demonstrated ability to maintain design margins and performance requirements across coupled domains

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 for terrestrial, underwater, and space use. The team includes members from SpaceX, the White House, the Pentagon, the Department of Energy, MIT, and various National Laboratories.