Senior Nuclear Engineer jobs in United States
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Antares · 3 days ago

Senior Nuclear Engineer

Antares is a company focused on making clean energy abundant through advanced nuclear technology. The Senior Nuclear Engineer will lead design and integration of reactor components, mentor junior engineers, and interface with regulatory bodies for licensing and compliance.

EnergyIndustrialMachinery ManufacturingManufacturing
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Responsibilities

Lead complex neutronics modeling and multiphysics analysis
Responsible nuclear engineer for design and integration of components
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

Qualification

Nuclear EngineeringMCNPMultiphyics simulationsPythonRegulatory processesLeadership skillsMentorshipTeam-oriented

Required

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

Preferred

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

Company

Antares

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Antares Industries is an advanced nuclear energy startup that designs and manufactures adaptable and scalable reactors.

Funding

Current Stage
Growth Stage
Total Funding
$126M
Key Investors
Shine Capital
2025-12-02Series B· $71M
2025-12-02Debt Financing· $25M
2024-10-30Series A· $30M

Leadership Team

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Julia DeWahl
Co-founder & President
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Company data provided by crunchbase