Senior Mechanical / Thermal Engineer - Heat Transfer Systems

About Us

At Antares, our long-term mission is to make clean energy abundant from Earth to the Asteroid Belt. We're fueled by the belief that advanced nuclear energy can strengthen our military, solve the climate crisis, elevate global living standards, and expand humanity's presence in outer space. To achieve our mission, we're building mass-producible, inherently safe, deployable microreactors that can be used terrestrially, underwater, and in space.

Formed in 2023, the Antares team hails from SpaceX, The White House, MIT, Rigetti Computing, The Air Force, General Atomics, Relativity Space, Ursa Major, Ultra Safe Nuclear, and Los Alamos National Laboratory. Antares has raised over $39M in venture capital from top-tier investors and has over $4M in government funding.

About the Team

As a Heat Transfer Systems Responsible Engineer you will play a critical role in the development, design, and implementation of advanced heat pipe systems for cutting-edge nuclear microreactors. This position requires a deep understanding of thermal engineering and heat transfer in extreme environments, with a focus on reliability, safety, and efficiency. The ideal candidate will drive innovation and ensure the highest standards in nuclear heat pipe technology, contributing to next-generation sustainable energy solutions.

Roles & Responsibilities :

• Lead the design, modeling, and analysis of heat pipe systems, ensuring compatibility with R1's core design, interfaces, and power conversion systems
• Develop manufacturing methods for prototyping and mass manufacturing
• Develop test articles, stands, and procedures for validating the limits of heat pipe performance and life characteristics
• Interface with core, containment vessel, and primary heat exchanger parts and owners to integrate heat pipes into the overall R1 system
• Define operating procedures and limits for reactor control system integration
• Investigate heat pipe failure and define reliability limits; integrate fixes rapidly

Basic Qualifications :

Preferred Skills and Experience :

Location

Culture

At Antares, we like to specifically tie each role to our founding document's set of values-here are the top five cultural values we think you should believe at your core to be successful :

Self. We win together. There is nothing more precious than a high-performing team.

Equal Opportunity

Antares is an Equal Opportunity Employer. Employment decisions are based solely on merit, competence, and qualifications, without regard to race, color, religion, gender, national origin / ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status.

ITAR Requirements

To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here.