Antares
Nuclear Engineer I/II
About this role
Antares is seeking a Nuclear Engineer to take ownership of key reactor design components including reactivity controls, shielding, fuels, and thermal hydraulics. You'll conduct neutronics simulations, support multiphysics analyses, and collaborate with senior engineers to develop inherently safe, mass-producible microreactors for terrestrial, underwater, and space applications.
What you'll do
- Perform neutronics modeling and simulations using MCNP, Serpent, or SCALE
- Support multiphysics analyses including thermal-hydraulics, heat transfer, and structural mechanics
- Participate in experimental validation of simulation results
- Collaborate with senior engineers on iterative design tasks
- Contribute to documentation and regulatory reporting
- Participate in hardware demonstrations and prototype testing
What they're looking for
- Neutron transport software (MCNP, Serpent, SCALE)
- Multiphysics modeling
- Python or similar programming language
- Thermal-hydraulics analysis
- Technical communication
- Fast-paced problem-solving
- Quick conceptual learning
- Advanced reactor design knowledge
Benefits
- Competitive salary: $120k-165k based on level and experience
- Work on advanced nuclear microreactor technology
- Collaborate with talent from SpaceX, MIT, national laboratories
- Over $130M in venture capital funding and $13M+ government contracts
- Team-oriented, mission-driven culture
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Antares
Antares develops advanced nuclear microreactors designed for diverse applications including terrestrial, underwater, and space use, with a focus on inherently safe and mass-producible designs. The company is hiring electrical engineers, nuclear engineers, thermo-mechanical designers, software engineers, and manufacturing engineers to advance reactor systems from design and analysis through testing, qualification, and production.
View all jobs at AntaresLikely interview questions
- Walk us through your experience with neutron transport software—which tools have you used (MCNP, Serpent, SCALE) and what did you model?
- Describe a time you worked on multiphysics analyses involving thermal-hydraulics or heat transfer. What challenges did you face and how did you validate your results?