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Jobs at Antares
76 open roles read nightly from companies’ own hiring pages. Each one links to the original ad.
1–20 of 76 jobs
Antares · Los Angeles, California, United States
Full-timeSenior$115K – $220K a yearEngineeringAs a Senior Turbomachinery Design Engineer, you will own the mechanical design of turbomachinery components and assemblies for Antares nuclear reactors. You will develop hardware from early layouts and architecture trades through detailed CAD, drawings, manufacturing, assembly,…
Reactor Operator
8 days agoAntares · Idaho Falls, Idaho, United States
Full-timeEntry level$31.00 – $71.00 an hourTrades & logisticsWe are seeking a Reactor Operator to support the safe and effective operation of Antares’ nuclear reactor systems through testing, startup, deployment, and ongoing operations. This role sits within our Nuclear Operations organization and will be responsible for executing…
Staff Turbomachinery Design Engineer
8 days agoAntares · Los Angeles, California, United States
Full-timeLead / staff$115K – $220K a yearEngineeringAs a Responsible Engineer for Turbomachinery, you will be a key member of the Reactor Hardware Team. You will own turbomachinery hardware for Antares nuclear reactors from concept through development, qualification, and production. You will own the technical execution of the…
Environmental Lab Manager
8 days agoAntares · Los Angeles, California, United States
Full-timeSenior$160K – $225K a yearScience & researchWe are looking for a hands-on Environmental Lab Manager to build and operate the environmental test capabilities supporting Antares’ R1 reactor and associated hardware. You will translate program needs into equipment and facility requirements, bring new capabilities online, and…
Antares · Los Angeles, California, United States
Full-timeLead / staff$160K – $235K a yearEngineeringAs an early member of Antares' quality systems function, you will help build the operating backbone that connects supplier execution, manufacturing, purchasing, quality, engineering, and finance. This role owns the practical systems and workflows that keep physical work moving:…
Antares · Los Angeles, California, United States
Full-timeMid level$145K – $190K a yearEngineeringAs a Thermo-Mechanical Design Engineer, you will play a key role in developing, designing, qualifying, and deploying advanced heat exchanger systems for cutting-edge energy applications. You will work closely with Responsible Engineers and cross-functional teams to mature…
Senior Structures Engineer
8 days agoAntares · Los Angeles, California, United States
Full-timeSenior$145K – $190K a yearEngineeringAs a Senior Structures Engineer, you'll lead the design, analysis, and development of critical reactor structures, including the core restraint mechanism, control drum support and mounting systems, primary heat exchanger vessel supports, and other safety-significant structural…
Antares · Los Angeles, California, United States
Full-timeMid level$125K – $210K a yearEngineeringAntares is seeking a Nuclear Instrumentation & Controls Engineer to support the development, integration, testing, and qualification of nuclear measurement systems and reactor instrumentation across our reactor programs. This engineer will be responsible for designing and…
Senior Mechanical Design Engineer (PCS)
9 days agoAntares · Los Angeles, California, United States
Full-timeSenior$115K – $190K a yearEngineeringAs a Mechanical Design Engineer on the Power Conversion System (PCS), you will design the hardware that turns a set of individually developed machines (turbomachinery, motor-generator, recuperator, and primary heat exchanger) into one installed, testable, and operable power…
Antares · Los Angeles, California, United States
Full-timeSenior$145K – $190K a yearEngineeringAs a Thermo-Mechanical Design Engineer, you will play a key role in developing, designing, qualifying, and deploying advanced heat exchanger systems for cutting-edge energy applications. You will work closely with Responsible Engineers and cross-functional teams to mature…
Antares · Los Angeles, California, United States
Full-timeLead / staff$150K – $220K a yearEngineeringAs a Staff Mechanical Engineer at Antares, you will own the design, analysis, and integration of high-temperature, high-pressure piping systems within our Power Conversion System (PCS). Your scope includes the piping connecting turbomachinery, heat exchangers, and other major…
Antares · Los Angeles, California, United States
Full-timeSenior$150K – $220K a yearEngineeringAs a Senior Mechanical Engineer at Antares, you will own the design, analysis, and integration of high-temperature, high-pressure piping systems within our Power Conversion System (PCS). Your scope includes the piping connecting turbomachinery, heat exchangers, and other major…
Senior Motor-Generator Engineer
9 days agoAntares · Los Angeles, California, United States
Full-timeSenior$145K – $220K a yearEngineeringAs a Senior Motor-Generator Engineer, you will own the design and development of high-speed motor-generator units (MGUs) for Antares nuclear reactors.
Senior Thermal Fluids Analyst
10 days agoAntares · Los Angeles, California, United States
Full-timeSenior$150K – $190K a yearEngineeringAs an Analyst at Antares, your primary responsibility will be to build and run thermal-fluids models of components and subsystems throughout the reactor core and power conversion system to ensure our designs meet thermal, mechanical, operational, and performance requirements in…
Test Technician IV
10 days agoAntares · Los Angeles, California, United States
Full-timeSenior$48.60 – $59.60 an hourTrades & logisticsAs a Senior Test Technician on the Antares team, you will work directly alongside Test Engineers to build, operate, instrument, and maintain test infrastructure for the R1 reactor. You will be responsible for assembling test stands, integrating sensors and data acquisition…
IT Helpdesk Technician
10 days agoAntares · Los Angeles, California, United States
Full-timeMid level$30.00 – $58.00 an hourCustomer success & supportAs a member of the Antares IT organization, you will keep the technology used by software, engineering, manufacturing, lab, and business teams reliable, secure, and ready for work. You will provide hands-on support across applicable workspace, Windows, macOS, Linux, mobile…
Senior Mechanical Design Engineer - Space
11 days agoAntares · Los Angeles, California, United States
Full-timeSenior$145K – $190K a yearEngineeringAs a Mechanical Design Engineer in the Mission Engineering team, you will primarily own hardware associated with nuclear power systems in space and on the surface of the Moon and Mars. As the Responsible Engineer (RE) on space with the expectation of taking hardware from clean…
Mechanical Design Engineer I/II - Space
11 days agoAntares · Los Angeles, California, United States
Full-timeMid level$90K – $150K a yearEngineeringAs a Level I or Level II Mechanical Design Engineer in the Mission Engineering team, you will support hardware design and development associated with nuclear power systems in space and on the surface of the Moon and Mars. As an engineer on the space team, you will be expected…
Antares · Los Angeles, California, United States
Full-timeMid level$95K – $190K a yearEngineeringAs an early member of the Antares supply chain team, you will define and execute the strategic roadmap required for the company to successfully iterate through prototyping and into full-rate production. This will include identifying, qualifying, and developing suppliers across…
CNC Programmer III
2 weeks agoAntares · Los Angeles, California, United States
Full-timeSenior$41.40 – $50.60 an hourEngineeringWe are looking for an experienced CNC Programmer to lead the development and execution of advanced machining processes for complex components. This role requires deep expertise in multi-axis programming and hands-on operation, along with the ability to support rapid iteration…
Updated 06 Nov 2026 09:37 UTC from the OptiTalent job library.