Antares jobs

We build microreactors for critical missions.

Based in Los Angeles, CA. 85 open roles, checked Nov 11, 2026.

For each role, see who to message at Antares: the hiring manager, a teammate and the recruiter, with a LinkedIn note ready to send — 613 suggested contacts across these roles.

Open roles at Antares

Reactor Hardware Engineering (15)

• Senior Mechanical Design Engineer (PCS) · Los Angeles
• Senior Turbomachinery Design Engineer · Los Angeles
• Turbomachinery Design Engineer II · Los Angeles
• Staff Turbomachinery Design Engineer · Los Angeles
• Thermo-Mechanical Engineer, Heat Exchanger · Los Angeles
• Senior Thermo-Mechanical Engineer, Heat Exchanger · Los Angeles
• Staff Piping Stress Design Engineer (PCS) · Los Angeles
• Senior Piping Stress Design Engineer (PCS) · Los Angeles
• Senior Motor-Generator Engineer · Los Angeles
• Senior Turbomachinery Aerodynamics Engineer · Los Angeles
• Embedded Controls Engineer - PCS (Power Conversion System) · Los Angeles
• Mechanical Design Engineer II (PCS) · Los Angeles
• Thermo-Mechanical Engineer II · Los Angeles
• Senior Thermo-Mechanical Engineer · Los Angeles
• General Application for Engineers · Los Angeles

Internships (11)

• Government Affairs Intern · DC
• Space Mechanical Design Engineering Intern - Summer 2027 · Los Angeles
• Multiphysics Software Intern - Summer 2027 · Los Angeles
• Reactor Software Engineering Intern - Summer 2027 · Los Angeles
• Quality Engineering Intern - Summer 2027 · Los Angeles
• Nuclear Operations & Licensing Engineering Intern - Summer 2027 · Idaho Falls
• IT Helpdesk Intern - Summer 2027 · Los Angeles
• Business Operations Finance Intern - Summer 2027 · Los Angeles
• Nuclear Engineering Intern - Summer 2027 · Los Angeles
• Mechanical Engineering Design Intern - Summer 2027 · Los Angeles
• Electrical Engineering Intern - Summer 2027 · Los Angeles

Manufacturing (7)

• R&D Technician II-III · Los Angeles
• Senior-Staff Manufacturing Engineer, Assembly & Integration · Los Angeles
• R&D Welding & Fabrication Technician III · Los Angeles
• Tooling Design Engineer II-Senior · Los Angeles
• Senior Manufacturing Engineer, Fabrication · Los Angeles
• Senior Manufacturing Engineer, Electrical Engineering · Los Angeles
• Manufacturing Engineer I-II, Machining · Los Angeles

Space (7)

• Senior Mechanical Design Engineer - Space · Los Angeles
• Mechanical Design Engineer I/II - Space · Los Angeles
• Build Engineer I/II - Space · Los Angeles
• Senior/Staff Space Systems Electrical Engineer · Los Angeles
• Senior Test Engineer - Space · Los Angeles
• Senior Structural Engineer - Space · Los Angeles
• Senior Thermal Engineer - Space · Los Angeles

Electrical Engineering & Software (6)

• Senior Software Engineer, Hardware Test Platform · Los Angeles
• Electrical Integration Engineer · Los Angeles
• Senior Electrical Engineer · Los Angeles
• Senior Power Electronics Engineer · Los Angeles
• Senior/Staff Electrical Systems Engineer · Los Angeles
• Electrical Engineer I/II · Los Angeles

Operations (5)

• IT Helpdesk Technician · Los Angeles
• Manufacturing Engineer - Supply Chain (Electrical/Electromechanical) · Los Angeles
• Equipment Reliability Engineer · Los Angeles
• Supply Chain Manager · Los Angeles
• General Counsel · Los Angeles

Mission Engineering (4)

• Deployment Site Lead · North Carolina
• Senior Mission Engineer · Los Angeles
• Mission Engineer II · Los Angeles
• Senior Systems Engineer · Los Angeles

Quality (4)

• Senior-Staff Enterprise Software Engineer · Los Angeles
• Build Quality Engineer II-Senior · Los Angeles
• Staff-Principal Reliability Engineer · Los Angeles
• Reliability Engineer II-Senior · Los Angeles

Mechanical Engineering (4)

• Senior Structures Engineer · Los Angeles
• Mechanical Design Engineer II - Reactivity Controls · Los Angeles
• Senior Mechanical Design Engineer - Reactivity Controls · Los Angeles
• Mechanical Engineer - Electronics Packaging · Los Angeles

Nuclear (4)

• Senior/Staff Nuclear Safety Analysis Engineer · Los Angeles
• Senior Nuclear Engineer · Los Angeles
• Nuclear Engineer II · Los Angeles
• Senior Radiation Shielding Engineer · Los Angeles

Nuclear Affairs (3)

• Reactor Operator · Idaho Falls
• Licensing Engineer · Idaho Falls
• Nuclear Operations Engineer · Idaho Falls

Test (3)

• Environmental Lab Manager · Los Angeles
• Test Technician IV · Los Angeles
• Test Engineer II-Senior · Los Angeles

Machining (3)

• CNC Programmer III · Los Angeles
• R&D Machinist I · Los Angeles
• R&D Machinist III-IV · Los Angeles

Analysis (2)

• Senior Thermal Fluids Analyst · Los Angeles
• Structural Analyst II · Los Angeles

Finance & Accounting (2)

• Senior Accountant · Los Angeles
• Controller · Los Angeles

Materials Engineering (2)

• Materials Engineer - Metallurgy · Los Angeles
• Welding Engineer · Los Angeles

Nuclear Engineering (1)

• Nuclear Instrumentation & Controls Engineer · Los Angeles

Talent & People (1)

• Technical Recruiter · Los Angeles

Government Affairs (1)

• Business Development Manager · DC

How to reach the hiring team at Antares

Skip the application portal: open a role to see who is likely hiring for it — the hiring manager, a teammate and the recruiter — and send a short, personal note instead of one more application.

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