Mechanical Design & Integration Engineer - Space

Location

Los Angeles

Employment Type

Full time

Department

Engineering

Compensation

$115K – $200K

As a growing Series A startup, the salary range is intentionally wide as we determine the most appropriate package for each individual, taking into consideration : years of experience, educational background, and unique skills and abilities as demonstrated throughout the interview process. Our intent is to offer a salary that is commensurate for the company's current stage of development and allows the employee to grow and develop within a role.

In addition to the significant stock option package, the estimated salary range for this role is posted.

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 Mechanical Design and Integration Engineer in Antares' Mission Engineering team, you will own the design and integration of cutting-edge nuclear terrestrial and space systems. From concept through fabrication and deployment, you'll develop reactor, testbed, and vehicle layouts that unify reactor, power conversion, heat rejection, and payload systems into a cohesive architecture. You'll drive trades on system layout, interfaces, packaging, working closely with cross-disciplinary teams to refine configurations and close design loops. Your responsibilities will span CAD integration, mass properties management, and precise definition of thermal and mechanical interfaces to ensure the system satisfies requirements and is manufacturable.

Roles and Responsibilities

• Lead the configuration and integration of terrestrial and space nuclear systems and testbeds including reactor, power conversion, thermal rejection, shielding, and structural elements.
• Drive system-level layout, mass properties, and integration decisions across all phases of design, from concept through CDR.
• Own CAD integration models and configuration baselines.
• Drive cross-discipline alignment and trade studies.
• Coordinate closely with subsystem leads (nuclear, thermal, structures) to ensure a system architecture that satisfies requirements.
• Support design reviews and integration / test planning for hardware.

Basic Qualifications

Preferred Skills & 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 :

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 U.S. citizen or national, a U.S. lawful permanent resident (green card holder), a refugee under 8 U.S.C. § 1157, or an 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. Compensation Range : $115K - $200K

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