Principal Test Engineer Jobs in California

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Engine Systems & Test Team- Propulsion Test Responsible Engineer II

Relativity Space

•

Long Beach, California, USA

Full-time

At Relativity Space, we're building rockets to serve today's needs and tomorrow's breakthroughs. Our Terran R vehicle will deliver customer payloads to orbit, meeting the growing demand for launch capacity. But that's just the start. Achieving commercial success with Terran R will unlock new opportunities to advance science, exploration, and innovation, pioneering progress that reaches beyond the known. Joining Relativity means becoming part of something where autonomy, ownership, and impact ex
Posted 39 days ago | Updated moments ago

Test & Evaluation Engineer 4

Boeing Company

•

El Segundo, California, USA

Full-time

This posting is for a contract assignment and is not a full-time employment offer with Boeing. Candidates selected for roles will be employed as contract workers through a Boeing approved 3rd party for the duration of the specified project. Work statement is a non-managerial role, non-leadership role. Regular and predictable attendance is required The Boeing Company is looking for an Senior Infrastructure Solution Architect Engineer to join our Space Systems Verification and Test team in El Se
Posted 17 days ago | Updated 11 hours ago

Firmware Engineer - Python Test Automation

Aduril Industries

•

Costa Mesa, California, USA

Full-time

Anduril Industries is a defense technology company with a mission to transform U.S. and allied military capabilities with advanced technology. By bringing the expertise, technology, and business model of the 21st century's most innovative companies to the defense industry, Anduril is changing how military systems are designed, built and sold. Anduril's family of systems is powered by Lattice OS, an AI-powered operating system that turns thousands of data streams into a realtime, 3D command and c
Posted 32 days ago | Updated 11 hours ago

Electrical Engineer, Test Automation

Tesla Motors

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Palo Alto, California, USA

Full-time

We seek a highly motivated and hands-on engineer with an electrical engineering background for a position in the Manufacturing Test Engineering group, a team focused on building robust, beautiful, data-centric automated testing equipment for Tesla's power electronics and battery manufacturing lines. This team concentrates on mechanical, electrical, software, and controls of capital equipment for our production lines around the world. This is an exciting opportunity to be a part of the "machine t
Posted 20 days ago | Updated moments ago

Senior Systems Test Engineer

Vaco by Highspring

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Carlsbad, California, USA

Full-time

As a member of our client'sfast-paced Test Engineering Team,you will work with the test team closely with the product design team to interpret module requirements and turn them into corresponding Qualification and Certification Test Plans, Procedures, and Automation Scripts. You will learn and understand new features, and how these new features work in the existing system. You will also perform testing of the systems to validate that the solution is acceptable for customer delivery. You will wit
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Posted 5 days ago

Senior Systems Test Engineer

SAIC

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Remote

Full-time

Job ID: 2506797 Location: REMOTE WORK, VA, US Date Posted: 2025-06-18 Category: Engineering and Sciences Subcategory: Test Engineer Schedule: Full-time Shift: Day Job Travel: Yes, 10 % of the Time Minimum Clearance Required: None Clearance Level Must Be Able to Obtain: Public Trust Potential for Remote Work: Yes Description SAIC is seeking a Senior Systems Test Engineer support of test campaign designs, planning, execution, analysis, and reporting of radiation detection systems for ou
Posted 54 days ago | Updated 9 hours ago

Electrical Engineer - Test Design

Aduril Industries

•

Costa Mesa, California, USA

Full-time

Anduril Industries is a defense technology company with a mission to transform U.S. and allied military capabilities with advanced technology. By bringing the expertise, technology, and business model of the 21st century's most innovative companies to the defense industry, Anduril is changing how military systems are designed, built and sold. Anduril's family of systems is powered by Lattice OS, an AI-powered operating system that turns thousands of data streams into a realtime, 3D command and c
Posted 16 days ago | Updated 11 hours ago

Engine Systems & Test Team- Propulsion Test Responsible Engineer I

Relativity Space

•

Long Beach, California, USA

Full-time

At Relativity Space, we're building rockets to serve today's needs and tomorrow's breakthroughs. Our Terran R vehicle will deliver customer payloads to orbit, meeting the growing demand for launch capacity. But that's just the start. Achieving commercial success with Terran R will unlock new opportunities to advance science, exploration, and innovation, pioneering progress that reaches beyond the known. Joining Relativity means becoming part of something where autonomy, ownership, and impact ex
Posted 39 days ago | Updated moments ago

Senior Software Test Engineer (Ethernet Switching)

Cisco Systems, Inc.

•

San Jose, California, USA

Full-time

This is a hybrid position located in San Jose, CA. Requirement is 3 days onsite/in-office per week. Meet the Team In the Data Center Business Unit, we are dedicated to driving innovation in networking technologies. Our focus is on developing groundbreaking Ethernet Switching products that address the evolving needs of modern network infrastructures, including those in AI, cloud computing, and enterprise environments. Your Impact In this role, you will have the opportunity to learn a wide rang
Posted 47 days ago | Updated 11 hours ago

Senior Electrical Engineer - Test Design

Aduril Industries

•

Costa Mesa, California, USA

Full-time

Anduril Industries is a defense technology company with a mission to transform U.S. and allied military capabilities with advanced technology. By bringing the expertise, technology, and business model of the 21st century's most innovative companies to the defense industry, Anduril is changing how military systems are designed, built and sold. Anduril's family of systems is powered by Lattice OS, an AI-powered operating system that turns thousands of data streams into a realtime, 3D command and c
Posted 17 days ago | Updated 11 hours ago

Software Engineer, Sensor Test Platform

Nuro Inc.

•

Mountain View, California, USA

Full-time

Who We Are Nuro is a self-driving technology company on a mission to make autonomy accessible to all. Founded in 2016, Nuro is building the world's most scalable driver, combining cutting-edge AI with automotive-grade hardware. Nuro licenses its core technology, the Nuro Driver , to support a wide range of applications, from robotaxis and commercial fleets to personally owned vehicles. With technology proven over years of self-driving deployments, Nuro gives the automakers and mobility platforms
Posted 15 days ago | Updated moments ago

Test Engineer (Dragon Spacecraft)

SpaceX

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Hawthorne, California, USA

Full-time

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. TEST ENGINEER (DRAGON SPACECRAFT) Dragon currently delivers cargo and astronauts to the International Space Station. Future missions will ultimately seek to extend humanity's reach far beyond the earth and moon. Bring
Posted 10 days ago | Updated 11 hours ago

Integration & Test Engineer (Falcon 9) - 2nd Shift

SpaceX

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Hawthorne, California, USA

Full-time

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. INTEGRATION & TEST ENGINEER (FALCON 9) - 2ND SHIFT RESPONSIBILITIES: Oversee the build and test process for the pneumatic, hydraulic and structural subassemblies of the Falcon launch vehicle, focusing on the Falcon He
Posted 25 days ago | Updated 11 hours ago

Internship, Test Equipment Mechanical Design Engineer, Cell Engineering (Winter/Spring 2026)

Tesla Motors

•

Palo Alto, California, USA

Full-time

Consider before submitting an application: This position is expected to start around January 2026 and continue through the Winter/Spring term (ending approximately May 2026) or continuing into Summer 2026 if available and there is an opportunity to do so. We ask for a minimum of 12 weeks, full-time and on-site, for most internships. Our internship program is for students who are actively enrolled in an academic program. entry level candidates seeking employment after graduation and not returnin
Posted 5 days ago | Updated moments ago

System Integration and Test Engineer

ASML USA

•

San Diego, California, USA

Full-time

Introduction to the job We are seeking a System Test Engineer (STE) to join our System Integration Management & Verification group in San Diego, CA. In this role, you will design and implement tests based on risk assessments, product requirements, and design specifications. Your work will be critical in ensuring the release of a well-defined and validated system configuration. Our EUV light source is a complex system composed of process gases, high-power lasers, optics, electronics, mechatroni
Posted 56 days ago | Updated 11 hours ago

Senior Hardware Test Engineer

NVIDIA Corporation

•

Santa Clara, California, USA

Full-time

Widely considered to be one of the technology world's most desirable employers, NVIDIA is an industry leader with groundbreaking developments in High-Performance Computing, Artificial Intelligence and Visualization. The GPU, our invention, serves as the visual cortex of modern computers and is at the heart of our products and services. Our work opens up new universes to explore, enables outstanding creativity and discovery and powers what were once science fiction inventions from artificial inte
Posted 53 days ago | Updated 11 hours ago

Avionics Test Engineer (Starshield)

SpaceX

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Hawthorne, California, USA

Full-time

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. AVIONICS TEST ENGINEER (STARSHIELD) Starshield leverages SpaceX's Starlink technology and launch capability to support national security efforts. While Starlink is designed for consumer and commercial use, Starshield
Posted 8 days ago | Updated 11 hours ago

Sr. Battery Test Engineer

Rivian

•

Tustin, California, USA

Full-time

About Rivian Rivian is on a mission to keep the world adventurous forever. This goes for the emissions-free Electric Adventure Vehicles we build, and the curious, courageous souls we seek to attract. As a company, we constantly challenge what's possible, never simply accepting what has always been done. We reframe old problems, seek new solutions and operate comfortably in areas that are unknown. Our backgrounds are diverse, but our team shares a love of the outdoors and a desire to protect it
Posted 25 days ago | Updated moments ago

Senior Systems Integration Test Engineer

PsiQuantum

•

Milpitas, California, USA

Full-time

Quantum computing holds the promise of humanity's mastery over the natural world, but only if we can build a real quantum computer. PsiQuantum is on a mission to build the first real, useful quantum computers, capable of delivering the world-changing applications that the technology has long promised. We know that means we will need to build a system with roughly 1 million qubits that supports fault tolerant error correction within a scalable architecture, and a data center footprint. By harnes
Posted 58 days ago | Updated 11 hours ago

Internship, Mechanical Test Engineer (Winter/Spring 2026)

Tesla Motors

•

Fremont, California, USA

Full-time

Consider before submitting an application: This position is expected to start around January 2026 and continue through the Winter/Spring term (ending approximately May 2026) or continuing into Summer 2026 if available and there is an opportunity to do so. We ask for a minimum of 12 weeks, full-time and on-site, for most internships. Our internship program is for students who are actively enrolled in an academic program. entry level candidates seeking employment after graduation and not returnin
Posted 5 days ago | Updated moments ago