Principal Test Engineer Jobs in California

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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 59 days ago | Updated 6 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 6 days ago | Updated 6 hours ago

System/Solution Test Engineer

AMD (Advanced Micro Devices)

•

Santa Clara, California, USA

Full-time

WHAT YOU DO AT AMD CHANGES EVERYTHING We care deeply about transforming lives with AMD technology to enrich our industry, our communities, and the world. Our mission is to build great products that accelerate next-generation computing experiences - the building blocks for the data center, artificial intelligence, PCs, gaming and embedded. Underpinning our mission is the AMD culture. We push the limits of innovation to solve the world's most important challenges. We strive for execution excellenc
Posted 6 days ago | Updated 6 hours ago

Software Development Engineer in Test, TikTok Global E-Commerce - USDS

TikTok

•

San Jose, California, USA

Full-time

Location : San Jose Employment Type : Regular Job Code : A168039 Apply to this job Share this listing: Responsibilities About the team Our quality assurance engineering team is responsible for keeping the e-commerce ecosystem stable, secure and intuitive for our users. We are looking for passionate and talented people to join us as we drive the future of e-commerce here at TikTok. What You'll Do: 1. Responsible for the quality assurance of e-commerce consumer side, seller side, creator si
Posted 56 days ago | Updated 5 hours ago

Software QA Test Dev Engineer

NVIDIA Corporation

•

Santa Clara, California, USA

Full-time

We are seeking a qualified Software QA Test Development Engineer to join our GPU SWQA team. The successful candidate will demonstrate substantial experience with AI technologies for automation of test cases, as well as an in-depth understanding of both Windows and Linux operating systems. Comprehensive knowledge of system architecture is essential, along with a strong command of PC I/O architecture and common bus interfaces, including PCI-E, USB, and SATA. Familiarity with specifications pertain
Posted 26 days ago | Updated 6 hours ago

PCBA Test Engineer

PsiQuantum

•

Palo Alto, 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 60+ days ago | Updated 6 hours ago

Software Development Engineer in Test Intern (TikTok-Intelligent Creation)- 2026 Summer (BS/MS)

TikTok

•

San Jose, California, USA

Full-time

Location : San Jose Employment Type : Intern Job Code : A180555 Apply to this job Share this listing: Responsibilities The TikTok Engineering Test team has been focusing on testing and delivering innovative and high quality core product features of the TikTok application. The team's goal is to facilitate successful release of TikTok features and enhancements from development to production through effective testing delivering continuous quality at speed. The team comprises of Software Engi
Posted 10 days ago | Updated 5 hours ago

Software Development Engineer in Test Intern (TikTok-PGC)- 2026 Summer (BS/MS)

TikTok

•

San Jose, California, USA

Full-time

Location : San Jose Employment Type : Intern Job Code : A116370 Apply to this job Share this listing: Responsibilities The TikTok Engineering Test team has been focusing on testing and delivering innovative and high quality core product features of the TikTok application. The team's goal is to facilitate successful release of TikTok features and enhancements from development to production through effective testing delivering continuous quality at speed. The team comprises of Software Engi
Posted 10 days ago | Updated 5 hours ago

Software Development Engineer in Test Intern (TikTok-Global Live-Fundamental)- 2026 Summer (BS/MS)

TikTok

•

San Jose, California, USA

Full-time

Location : San Jose Employment Type : Intern Job Code : A122676 Apply to this job Share this listing: Responsibilities The TikTok Engineering Test team has been focusing on testing and delivering innovative and high quality core product features of the TikTok application. The team's goal is to facilitate successful release of TikTok features and enhancements from development to production through effective testing delivering continuous quality at speed. The team comprises of Software Engi
Posted 10 days ago | Updated 5 hours ago

Senior Firmware Engineer - Manufacturing Test

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 18 days ago | Updated 6 hours ago

MX Test Engineer

Samsung Electronics America

•

Remote or Bound Brook, New Jersey, USA

Full-time

Position Summary Our qualified candidate will be responsible for quality assurance and quality improvement testing of the key performance attributes for smartphones, tablets, and wearables for Samsung's and competitor's products. The candidate will also be involved in the testing of Samsung IOT products. The testing is conducted as per the Samsung Quality Assurance ("QA") lab test protocols which are based on performance measurements and QA lab testing methodologies as well as subjective asses
Posted 60+ days ago | Updated 6 hours ago

Software Test Engineer (Switches & Routers)

Cisco Systems, Inc.

•

San Jose, California, USA

Full-time

This is a hybrid role located in San Jose, Ca. with expectations to be onsite/in the office 3 days per week. Meet the Team This is a role within hyper scaler/DCN switching. You will work on functional level testing and automation of Nexus 9000 line of Data Center switches You will work with a diverse group of some of the brightest problem solvers and thinkers in the Data Center Switching Team that work on next generation of Data Center & Cloud switches. Your Impact You are someone who thrives i
Posted 60+ days ago | Updated 6 hours ago

Senior Electrical Engineer - Manufacturing Test

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 18 days ago | Updated 6 hours ago

Staff Flight Test Engineer - Flight Test

GE Aerospace

•

Victorville, California, USA

Full-time

Job Description Summary Activities contributing to the design and development of products, solutions and systems. Includes activities linked to technical improvement of existing products and components Impacts approaches, projects and programs in the functional area or affected business organization and ways of working. Impacts quality, efficiency, and effectiveness of own team. Has significant input into priorities. Guided by professional practices and policies that are shaped by the role. The
Posted 3 days ago | Updated 6 hours ago

Staff Software Test Engineer (Hybrid/Onsite)

Visa Inc.

•

Remote or Austin, Texas, USA

Full-time

Company Description Visa is a world leader in payments and technology, with over 259 billion payments transactions flowing safely between consumers, merchants, financial institutions, and government entities in more than 200 countries and territories each year. Our mission is to connect the world through the most innovative, convenient, reliable, and secure payments network, enabling individuals, businesses, and economies to thrive while driven by a common purpose - to uplift everyone, everywhe
Posted 6 days ago | Updated 6 hours ago

Staff Software Engineer in Test Systems Engineer

GE Aerospace

•

Remote

Full-time

Job Description Summary Are you ready to take the lead in designing cutting-edge software architectures for data acquisition systems used in aircraft engine testing? Join our Data Acquisition Systems team and revolutionize how we acquire, store, manage, and process test data. You'll evaluate both vendor and in-house systems, explore new technologies, and spearhead software development efforts to advance our test cell systems. If you're passionate about collaborating with a dynamic team to upgrad
Posted 26 days ago | Updated 6 hours ago

Lead Analytics Engineer, Test & Evaluation

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 50 days ago | Updated 6 hours ago

Lead Instrumentation Engineer - Flight Test

GE Aerospace

•

Victorville, California, USA

Full-time

Job Description Summary Activities contributing to the design and development of products, solutions and systems. Includes activities linked to technical improvement of existing products and components. Impacts approaches, projects and programs in the functional area or affected business organization and ways of working. Impacts quality, efficiency and effectiveness of own team. Has significant input into priorities. Guided by professional practices and policies that are shaped by the role. The
Posted 46 days ago | Updated 6 hours ago

Associate Test Engineer(ONSITE- Night Shift)

Spire Systems Inc

•

Milpitas, California, USA

Contract

Shift Hours: 10.30 PM to 6:30 AM with 1/2 hour break OT required Perform set-up, calibration, testing and troubleshooting of mechanical assemblies at system level. Determine and may develop methods and procedures from blueprints, drawings and diagrams. Test and troubleshoot assemblies and/or final systems, and complete rework on assemblies and/or systems as a result of testing. Prepare technical reports summarizing findings and recommending solutions to technical problems. May assist in the sele
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Posted 54 days ago | Updated 5 days ago

Senior Test Engineer

Jobot

•

Long Beach, California, USA

Full-time

Senior Test Engineer Needed For Innovative and Growing Space, Defense, and Aerospace Engineering and Manufacturing Company This Jobot Job is hosted by: Billy Surch Are you a fit? Easy Apply now by clicking the "Apply Now" button and sending us your resume. Salary: $110,000 - $150,000 per year A bit about us: A leading manufacturer of complex aerospace components and critical safety components for military and commercial aircrafts. Our reputation has been built on providing quality aerospace p
Posted 1 day ago | Updated 3 hours ago