Physics jobs in Brea, CA

Accelerated Physics Simulation Engineer - Agentic Computational Engineering (ACE)

Los Angeles, California

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Today

Voyager is an innovative defense, national security and space technology company committed to advancing and delivering transformative, mission-critical solutions. We tackle the most complex challenges to unlock new frontiers for human progress, fortify national security, and protect critical assets to lead in the race for technological and operational superiority from ground to space. Forge the Future: Join Voyager Technologies The future belongs to those who build it. At Voyager Technologies, w

Full-time

USD 165,000.00 - 250,000.00 per year

Nuclear Engineer, Core Physics

El Segundo, California

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Today

About Radiant Radiant is an El Segundo, CA-based startup building the world's first mass-produced, portable nuclear microreactors. The company's first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be transported anywhere power is needed and run for up to 5 years without refueling. Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases. R

Full-time

USD 106,500.00 - 146,475.00 per year

Explosives and Shock Physics Engineer

El Segundo, California

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Today

The Aerospace Corporation is the trusted partner to the nation's space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally funded research and development center (FFRDC), we are broadly engaged across all aspects of space- delivering innovative solutions that span satellite, launch, ground, and cyber systems for defense, civil and commercial customers. When you join our team, you'll be part of a special collection of problem solvers,

Full-time

USD 117,300.00 - 175,900.00 per year

ENGINEERING TESTING AID III

Los Angeles, California

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Today

Salary : $59,428.32 - $75,860.88 Annually Location : Los Angeles County, CA Job Type: Full time Job Number: C3856R Department: PUBLIC WORKS Opening Date: 08/13/2026 Position/Program Information EXAM NUMBER C3856R FILING PERIOD The application filing period will begin on Monday, August 17, 2026, at 8:00 a.m. (PT) - Continuous. We will keep accepting applications until the position is filled. The application window may close unexpectedly once we have enough qualified candidates. TYPE OF RECRUITM

Full-time

USD 59,428.32 - 75,860.88 per year

Test & Evaluation Engineer 3

Seal Beach, California

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Today

Location: Seal Beach, CA Salary: $60.00 USD Hourly - $70.00 USD Hourly Description: Our client is currently seeking a Test & Evaluation Engineer 3 Taft, CA Long Term Contract Position Responsibilities: Supports the development and tracking of performance metrics, tracks trends, and works with leadership to develop actions plans Aids in development of a test execution plan that includes resource allocation, top level schedule that tracks usage of equipment and floor space, test support require

Contract

USD 60.00 - 70.00 per hour

Senior Thin Film Engineer

Irvine, California

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Today

A Day in Your Life at MKS: As a Senior Thin Film Engineer at MKS Newport, you will partner with Thin Film Engineering to develop, support execute and maintain coating designs and processes. In this role, you will report to the Director of Thin Film Engineering. You Will Make an Impact By: Developing, designing and optimizing optical thin film deposition processes to meet requirements and specifications, for ion beam sputtering, ion assist and electron beam coating processes for our thin film co

Full-time

USD 100,000.00 - 140,000.00 per year

Test Engineer

Torrance, California

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Today

Overview Job Title: Test Engineer Job Location: Torrance, CA Salary: $85,000-$125,000/yr DOE and Level Stellant is excited to offer an onsite engineering position at our Torrance facility, in the Test Engineering group. This role will support development, manufacturing and testing of Traveling Wave Tubes (TWTs), high voltage Electronic Power Conditioners (EPC), Microwave Power Modules (MPMs) and Xenon Ion Thrusters Systems (XIPS) as a critical technical contributor. Stellant's industry leadin

Full-time

USD 85,000.00 - 125,000.00 per year

Nuclear Consequence Analysis Engineer

Los Angeles, California

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Today

About the Company General Matter is enriching uranium in America. Our goal is to design, build, and operate the world's lowest-cost enrichment services in the United States. Our mission is to restore America's ability to produce nuclear fuel-fuel that will power AI, advanced manufacturing, critical industries, and the next generation of nuclear reactors. Ultimately, our work will help power national ambitions and enable a high-energy society. We were incubated by Founders Fund, like Anduril and

Full-time

USD 150,000.00 - 210,000.00 per year

Thin Film Engineer

Irvine, California

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Today

A Day in Your Life at MKS: As a Thin Film Engineer at MKS Newport, you will partner with Thin Film Coating to design, develop, manufacture and test optical surface treatments. In this role, you will report to the Director of Thin Film Engineering. You Will Make an Impact By: Developing, designing and optimizing optical surface treatments and processes to meet requirements and specifications, for ion beam sputtering, ion assist and electron beam coating processes, surface etching and/or photolit

Full-time

USD 80,000.00 - 100,000.00 per year

Senior Principal Algorithm Software Systems Engineer

Cypress, California

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Today

Job ID: 114982 Location: Cypress CA Schedule: 9/80 The Electro Optical Infrared Systems (EOIS) line of business within DRS has locations in Dallas and Austin, TX, Melbourne, FL, and Cypress, CA. EOIS develops, manufactures, and supports infrared and electro-optical solutions for soldiers, ground vehicles and airborne platforms. We offer an exciting and challenging work environment, a competitive salary and benefits package, and a business culture that rewards performance. Employing the world's

Full-time

USD 150,452.00 - 233,578.00 per year

Electric Propulsion Engineer, Mechanical (Starshield)

Hawthorne, California

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Today

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today SpaceX is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars. ELECTRIC PROPULSION ENGINEER, MECHANICAL (STARSHIELD) Starshield leverages SpaceX's Starlink technology and launch capability to support national security efforts. While Starlink is designed for consumer and commercial

Full-time

USD 120,000.00 - 170,000.00 per year

Materials Engineer, Ceramics

Los Angeles, California

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Today

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. The Antares team hails from SpaceX, the Wh

Full-time

USD 115,000.00 - 185,000.00 per year

Nuclear Engineer I/II

Los Angeles, California

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Today

Full-time

USD 120,000.00 - 160,000.00 per year

Materials Engineer II

Los Angeles, California

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Full-time

USD 115,000.00 - 150,000.00 per year

Radiation Effects Engineer

Redondo Beach, California

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Today

Radiation Effects Engineer Department: Avionics Employment Type: Full Time Location: Redondo Beach Compensation: $120,000 - $150,000 / year Description As a Radiation Effects Engineer, your core responsibility will be to contribute to the component selection, design, testing, and delivery of flight hardware systems for space missions from low Earth orbit to mars. You'll work closely with electrical engineers, RF engineers, EMC engineers, mechanical engineers, and test engineers to maximize r

Full-time

USD 120,000.00 - 150,000.00 per year

Senior EMI-EMC Test Engineer

Long Beach, California

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Today

At Vast, our mission is to contribute to a future where billions of people are living and thriving in space. Vast is developing next-generation space stations to ensure a continuous human presence in space for America and its allies, enabling advanced microgravity research and manufacturing, and unlocking a new space economy for government, corporate, and private customers. Using an incremental, hardware-rich and low-cost approach, Vast is rapidly developing its multi-module Haven Station. Haven

Full-time

USD 147,600.00 - 209,520.00 per year

Research Engineer

Pasadena, California

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Today

Caltech is a world-renowned science and engineering institute that marshals some of the world's brightest minds and most innovative tools to address fundamental scientific questions. We thrive on finding and cultivating talented people who are passionate about what they do. Join us and be a part of the diverse Caltech community. Job Summary The Laser Interferometer Gravitational-wave Observatory (LIGO) Laboratory seeks a highly motivated and skilled Research Engineer to join its team. LIGO Lab

Full-time

USD 80,000.00 - 104,700.00 per year

Machine Learning Engineer - Mid-Level

El Segundo, California

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Today

Full-time

USD 160,000.00 - 210,000.00 per year

Machine Learning Engineer - Associate

El Segundo, California

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Today

Full-time

USD 120,000.00 - 170,000.00 per year

Turbomachinery Engineer

Los Angeles, California

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Today

Full-time

USD 140,000.00 - 220,000.00 per year

Physics jobs in Brea, CA, USA