Senior Integration Engineer, Nuclear Programs

antares; Idaho Falls (ID); On-site; USD 150,000 - 210,000; Full time

Job summary

Antares is seeking a Senior Nuclear Integration Engineer to ensure our nuclear programs are translated into deployable, safe reactor systems. This role sits at the intersection of engineering, operations, and external stakeholders, and is responsible for deployment readiness and startup.

You will serve as a technical integrator across internal teams and regulators, coordinating across disciplines to achieve clear, executable plans for reactor deployment in diverse environments.

Qualifications

• Bachelor’s degree in engineering is required.
• 4+ years in regulated technical environments is preferred.
• Experience translating requirements into executable plans is a plus.

Responsibilities

• Serve as technical interface with regulators and stakeholders.
• Coordinate safety, compliance, and deployment programs.
• Lead cross-discipline teams to deploy reactor projects.
• Translate regulatory requirements into site-level actions.
• Support planning and execution of reactor deployments.

Skills

Regulatory programs experience

Technical communication

Cross-functional collaboration

Nuclear safety knowledge

Education

Bachelor’s degree in engineering

Job description

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, and National Laboratories like Los Alamos, Idaho, and Oak Ridge. Antares has raised over $130M in venture capital from top-tier investors and has over $13M in government funding.

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, and National Laboratories like Los Alamos, Idaho, and Oak Ridge. Antares has raised over $130M in venture capital from top-tier investors and has over $13M in government funding.

About the Team

We are seeking a Senior Nuclear Integration Engineer to ensure Antares’ nuclear programs are translated into executable, deployable systems. This role sits at the intersection of engineering, operations, and external stakeholders, and is responsible for ensuring that reactors can be successfully deployed, started, and operated as complete systems.

You will serve as a technical integrator and interface across internal teams, key stakeholders, and regulators. This includes representing Antares in technical discussions, coordinating across disciplines, and ensuring that nuclear safety, compliance, and operational requirements are aligned and achievable in real-world environments.
This position is ideal for someone who is comfortable operating across boundaries both technical, organizational, as well as external, and who can drive clarity and execution in complex, ambiguous environments.

Roles and Responsibilities:

• Serve as a technical interface with regulators, partners, and key stakeholders, representing Antares’ nuclear approach and addressing technical questions

• Facilitate development and implementation of Safety Management Programs

• Ensure alignment and readiness of nuclear safety, compliance, and operational programs for reactor deployment and startup

• Coordinate across internal teams (engineering, operations, licensing, and deployment) to ensure cohesive execution of reactor projects

• Translate technical, regulatory, and operational requirements into clear, implementable approaches at the site level

• Identify, track, and resolve cross-functional gaps, risks, and open items related to nuclear program implementation

• Support planning and execution of deployments by ensuring technical requirements are well-defined and achievable

• Contribute to development of site-specific approaches, including infrastructure, facilities, and supporting systems, in coordination with deployment teams

• Participate in and drive technical discussions, reviews, and working groups with internal and external stakeholders

• Provide feedback to engineering and program teams to improve the scalability and repeatability of reactor deployments

Basic Qualifications:

• Bachelor’s degree in engineering (nuclear, mechanical, chemical, aerospace, or related field)

• 4+ years of experience in nuclear, aerospace, defense, or other highly regulated technical environments

Preferred Skills & Experience:

• Experience working across multiple disciplines to deliver complex systems or projects

• Strong ability to connect technical, regulatory, and operational requirements into executable plans

• Demonstrated ability to operate effectively in ambiguous, fast-paced environments

• Excellent technical communication skills, with the ability to engage both internal teams and external stakeholders

• Experience supporting reactor operations, startup, commissioning, or deployment
  Familiarity with nuclear safety and compliance programs

• Experience working with customers, regulators, or external partners in technical settings

• Background in the U.S. Navy nuclear program, national laboratories, or commercial nuclear industry

• Experience in field engineering, test operations, or site-based project execution

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:

• Think in Systems - Energy and Defense are complex ecosystems with numerous stakeholders with competing priorities, conflicting policies, perverse incentives, and emergent and path-dependent properties. First principles thinking alone is insufficient. Think probabilistically and then take action. “If you want to be certain, then you are apt to be obsolete.” Over-optimizing the components often degrades the system

• Obsess over the End User - The customer and end user are often not the same. We will never build globally competitive commercial products if we lose sight of our end users and their entire interaction with the product life cycle

• Be Unconstrained by Convention - Our only limits are the laws of physics. Many, even experts, will say what we are working on is impossible. They said the same about SpaceX reusing rockets. Generationally impactful companies, by definition, must accomplish the seemingly impossible. If it were easy, it would have already been done. Never shy away from a solution because it has never been tried before, and never choose to do something because that's “how it's always been done”

• Go Where the Work I’s - Never miss a chance to meet a customer, user, or stakeholder face to face, even if that means hopping on a plane. If you can’t make it, find a teammate who can channel your intentions and go in your place. Deep work can be done from anywhere, but we believe teams are built in person, and aim to maximize our time together

• Operate in the Grey - Embrace nuance in pursuit of truth. Question every fundamental assumption

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.

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:

• Think in Systems - Energy and Defense are complex ecosystems with numerous stakeholders with competing priorities, conflicting policies, perverse incentives, and emergent and path-dependent properties. First principles thinking alone is insufficient. Think probabilistically and then take action. “If you want to be certain, then you are apt to be obsolete.” Over-optimizing the components often degrades the system

• Obsess over the End User - The customer and end user are often not the same. We will never build globally competitive commercial products if we lose sight of our end users and their entire interaction with the product life cycle

• Be Unconstrained by Convention - Our only limits are the laws of physics. Many, even experts, will say what we are working on is impossible. They said the same about SpaceX reusing rockets. Generationally impactful companies, by definition, must accomplish the seemingly impossible. If it were easy, it would have already been done. Never shy away from a solution because it has never been tried before, and never choose to do something because that's “how it's always been done”

• Go Where the Work I’s - Never miss a chance to meet a customer, user, or stakeholder face to face, even if that means hopping on a plane. If you can’t do it, find a teammate who can channel your intentions and go in your place. Deep work can be done from anywhere, but we believe teams are built in person, and aim to maximize our time together

• Operate in the Grey - Embrace nuance in pursuit of truth. Question every fundamental assumption

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.