Jobs at Antares (Now Hiring) — 37 open — Page 2

Materials Engineer II

Los Angeles, California, United States · On-site

$115k–$150k/yr

Mid level$126M raised

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, …

Skills: Materials Characterization, Optical Microscopy, Electron Microscopy, Mechanical Property Evaluation, Root Cause Investigation

Senior Systems Engineer

Los Angeles, California, United States · On-site

$140k–$185k/yr

Mid level$126M raised

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, …

Skills: Requirements Management, Reliability Analysis, Risk Assessment, Root-Cause Analysis, FMEA

Senior CAD Systems Engineer (NX)

Los Angeles, California, United States · On-site

$140k–$185k/yr

Senior$126M raised

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, …

Skills: Siemens NX, CAD Administration, NX Open, ASME Y14.5 GD&T, Product Data Management

Senior Firmware Engineer

Los Angeles, California, United States · On-site

$150k–$185k/yr

Senior$126M raised

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, …

Skills: C, C++, Python, Rust, Embedded Software

Test Technician I-II

Los Angeles, California, United States · On-site

$24/hr–$38/hr

Mid level$126M raised

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, …

Skills: Test Rig Assembly, Instrumentation Integration, Data Acquisition Systems, Mechanical Aptitude, Electrical Wiring

Reactor Software Engineer I-II

Los Angeles, California, United States · On-site

$120k–$160k/yr

Mid level$126M raised

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, …

Skills: Python 3, Object-Oriented Design, Asynchronous Programming, Hardware Integration, Git

Thermal - Fluids Analyst I / II

Los Angeles, California, United States · On-site

$90k–$150k/yr

Mid level$126M raised

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, …

Skills: CFD, Thermal-Fluids Analysis, Conjugate Heat Transfer, Siemens NX, Python

Senior People Business Partner

Los Angeles, California, United States · On-site

$100k–$175k/yr

Senior$126M raised

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, …

Skills: Employee Relations, Organizational Design, Talent Planning, Change Management, HR Policy Development

Controller

Los Angeles, California, United States · On-site

$150k–$230k/yr

Senior$126M raised

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, …

Skills: U.S. GAAP, Financial Reporting, Technical Accounting, Internal Controls, ERP Implementation

Senior Test Technician

Los Angeles, California, United States · On-site

$48/hr–$1/hr

Senior$126M raised

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, …

Skills: Test Rig Assembly, Instrumentation Integration, Data Acquisition Systems, Mechanical Fabrication, Electrical Wiring

Thermo - Mechanical Design Engineer - Heat Pipes

Los Angeles, California, United States · On-site

$112k–$150k/yr

Mid level$126M raised

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, …

Skills: Thermal Modeling, Heat Pipe Design, COMSOL, ANSYS, Two-Phase Flow Simulation

Senior, Thermo-Mechanical Design Engineer - Reactor Cavity Cooling Systems

Los Angeles, California, United States · On-site

$140k–$185k/yr

Senior$126M raised

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, …

Skills: Thermal-Fluid Analysis, Mechanical Design, Structural Analysis, Piping Design, HVAC Design

Mission Engineer

Los Angeles, California, United States · On-site

$112k–$150k/yr

Mid level$126M raised

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, …

Skills: Systems Engineering, Thermodynamics, Energy Systems, Engineering Economics, Project Management

Systems Administrator

Los Angeles, California, United States · On-site

$85k–$120k/yr

Mid level$126M raised

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, …

Skills: Microsoft 365 Administration, Entra ID, Intune, Endpoint Management, Network Infrastructure

Nuclear Engineer I/II

Los Angeles, California, United States · On-site

$120k–$160k/yr

Mid level$126M raised

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, …

Skills: Neutronics Modeling, MCNP, Serpent, SCALE, Multiphysics Analysis

Staff Space Electrical Systems Engineer

Los Angeles, California, United States · On-site

$150k–$210k/yr

Senior+$126M raised

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, …

Skills: Electrical Architecture, Power Distribution, Instrumentation and Controls, Hardware-based Control Systems, R&D Testing

Senior Software Engineer, Multiphysics Simulation

Los Angeles, California, United States · On-site

$112k–$200k/yr

Senior$126M raised

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, …

Skills: Python, C++, Data Acquisition, Hardware Integration, Test Automation

About Antares

We build microreactors for critical missions.

Industry
Defense and Space Manufacturing
Company size
51-200 employees
Founded
2023
Headquarters
Los Angeles, CA
LinkedIn followers
15,323
Total funding
$126M

Energy abundance unlocks progress. It powers missions, grows economies, strengthens national security, and expands what’s possible on Earth and beyond. But in the places where power is most critical, it’s often the hardest to deliver. That’s the problem we’re solving. At Antares, we’re building compact nuclear microreactors to deliver reliable, mobile energy where it’s needed most: remote military bases, austere industrial sites, and, one day, deep space and underwater missions. The U.S. nuclear industry hasn’t seen true momentum in decades. We’re moving it forward with urgency, humility, and a commitment to building what’s needed now. Our team includes engineers and operators from SpaceX, Relativity Space, Ursa Major, the White House, MIT, Rigetti Computing, and the U.S. Air Force. Backed by over $600M from top-tier investors, we’re focused on shipping hardware, not hypotheticals.

Offices: Los Angeles, CA 90503, US · 215 Richland Ave E, Aiken, South Carolina 29801, US · 545 Shoup Ave, Idaho Falls, Idaho 83402, US

Machinery ManufacturingIndustrialEnergyManufacturing
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