Principal Engineer Jobs in California

1,501 - 1,520 of 1,557 Jobs

Sr. Staff CAD & CAE Methods EngineerJob Title - Sr. Staff CAD & CAE Methods Engineer

RivianCompany Name - Rivian

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Irvine, 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

Lead Java Backend Developer | Mountain View, CA(Only Local) Hybrid | Long TermJob Title - Lead Java Backend Developer | Mountain View, CA(Only Local) Hybrid | Long Term

ApTaskCompany Name - ApTask

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Mountain View, California, USA

Contract

Job role: Lead Java FSD Duration: Contract Location: Mountain View, CA JD- We are seeking an experienced Full Stack Java Developer with a strong focus on backend (80%) and proficiency in frontend (React or Angular - 20%). This role requires solid technical expertise to lead the integration of a newly acquired product with our existing Java-based systems. Key Responsibilities: Lead end-to-end development and integration of Java-based backend systems.Design and implement scalable, secure, and hig

Senior Staff AI Research Engineer, On-Device Language IntelligenceJob Title - Senior Staff AI Research Engineer, On-Device Language Intelligence

Samsung Electronics AmericaCompany Name - Samsung Electronics America

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Mountain View, California, USA

Full-time

Lab Summary: Samsung AI Research Center (AIC) located in Mountain View, California, is currently recruiting outstanding scientists for the Language and Personal Intelligence lab. Our goal is to perform research and development with direct impact on future Samsung products reaching hundreds of millions of users worldwide. We are focused on pushing the state-of-the-art and practice in on-device natural language intelligence. Position Summary: We are looking for highly skilled and motivated Researc

Senior Staff AI Research Engineer, On-Device Personal IntelligenceJob Title - Senior Staff AI Research Engineer, On-Device Personal Intelligence

Samsung Electronics AmericaCompany Name - Samsung Electronics America

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Mountain View, California, USA

Full-time

Lab Summary:Samsung AI Research Center (AIC) located in Mountain View, California, is currently recruiting outstanding scientists for the Language and Personal Intelligence lab. Our goal is to perform research and development with direct impact on future Samsung products reaching hundreds of millions of users worldwide. We are focused on pushing the state-of-the-art and practice in natural language and knowledge intelligence. Position Summary: As a Research Engineer, you will be at the forefront

Machine Learning Engineer Graduate (Lead Ads Technology) - 2026 Start (BS/MS)Job Title - Machine Learning Engineer Graduate (Lead Ads Technology) - 2026 Start (BS/MS)

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Regular Job Code : A169615A Apply to this job Share this listing: Responsibilities The Lead Ads team empowers TikTok's global monetization (billion-dollar business) via efficiently delivering lead ads on TikTok. Our mission is to push the boundaries of large-scale ads delivery systems and lead the innovations of TikTok's personalized online advertising. We are looking for talented individuals to join our team in 2026. As a graduate, you will get unpar

Senior Network Cisco Tools Developer - Team LeadJob Title - Senior Network Cisco Tools Developer - Team Lead

CopelandCompany Name - Copeland

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Manila, Metro Manila, Philippines

Full-time

About Us We are a global climate technologies company engineered for sustainability. We create sustainable and efficient residential, commercial and industrial spaces through HVACR technologies. We protect temperature-sensitive goods throughout the cold chain. And we bring comfort to people globally. Best-in-class engineering, design and manufacturing combined with category-leading brands in compression, controls, software and monitoring solutions result in next-generation climate technology th

Engine Systems & Test Team- Staff Engine Systems Development EngineerJob Title - Engine Systems & Test Team- Staff Engine Systems Development Engineer

Relativity SpaceCompany Name - Relativity Space

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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

Member of Technical Staff - AI Product - Backend EngineerJob Title - Member of Technical Staff - AI Product - Backend Engineer

Microsoft CorporationCompany Name - Microsoft Corporation

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Mountain View, California, USA

Full-time

Overview Microsoft AI is looking for a talented Backend engineer to help build the next wave of capabilities of our personalized AI assistant, Copilot. We're looking for someone who will bring an abundance of positive energy, empathy, and kindness to the team every day, in addition to being highly effective. The right candidate enjoys building world-class consumer experiences and products in a fast-paced environment. The Growth engineering team is responsible for user acquisition, engagement, r

Member of Technical Staff, AI Platform - Backend EngineerJob Title - Member of Technical Staff, AI Platform - Backend Engineer

Microsoft CorporationCompany Name - Microsoft Corporation

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Mountain View, California, USA

Full-time

Overview As Microsoft continues to push the boundaries of AI, we are on the lookout for passionate individuals to work with us on the most interesting and challenging AI questions of our time. Our vision is bold and broad - to build systems that have true artificial intelligence across agents, applications, services, and infrastructure. It's also inclusive: we aim to make AI accessible to all - consumers, businesses, developers - so that everyone can realize its benefits. Microsoft AI is lookin

Software Engineer Intern (Lead Ads) - 2025 Fall (BS/MS)Job Title - Software Engineer Intern (Lead Ads) - 2025 Fall (BS/MS)

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Intern Job Code : A76680A Apply to this job Share this listing: Responsibilities TikTok Lead Ads team is responsible for building lead generation solutions that enable businesses to create seamless interactions with their customers while ensuring our community feels comfortable and safe on the platform. This team aims to provide intuitive, simplified solutions that grow advertiser activation, retention and ARPA via enhanced delivery experience, perfor

Lead Java Back End and Angular Developer - C13 - IRVINGJob Title - Lead Java Back End and Angular Developer - C13 - IRVING

CitiCompany Name - Citi

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Remote or Irving, Texas, USA

Full-time

The Back End Developer is a senior level position responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to lead applications systems analysis and programming activities. Responsibilities: Partner with multiple management teams to ensure appropriate integration of functions to meet goals as well as identify and define necessary system enhancements to deploy new products and pro

Staff Flight Test Engineer, Group 5Job Title - Staff Flight Test Engineer, Group 5

Aduril IndustriesCompany Name - Aduril Industries

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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

Senior/Staff Test & Evaluation Engineer, Mission AutonomyJob Title - Senior/Staff Test & Evaluation Engineer, Mission Autonomy

Aduril IndustriesCompany Name - Aduril Industries

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Costa Mesa, California, USA

Full-time

Staff Materials & Processes Engineer, Structural CompositesJob Title - Staff Materials & Processes Engineer, Structural Composites

Relativity SpaceCompany Name - Relativity Space

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Long Beach, California, USA

Full-time

ASIC FPGA Design and Verification Engineer - (Experienced, Lead, or Senior) - MTVJob Title - ASIC FPGA Design and Verification Engineer - (Experienced, Lead, or Senior) - MTV

Boeing CompanyCompany Name - Boeing Company

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Mountain View, California, USA

Full-time

ASIC FPGA Design and Verification Engineer - (Experienced, Lead, or Senior) - MTV Company: The Boeing Company Boeing Space, Intelligence & Weapons Systems has an exciting opportunity for multiple ASIC and/or FPGA Design and Verification Engineers (Experienced, Lead, or Senior) to join us as part of our Boeing Electronic Products team at the heart of Boeing's products; ASICs and FPGAs in Mountain View, CA. From complex digitally beamformed phased arrays for constellation satellite programs to c

Application Monitoring Engineer/SME (Architect/ techincal lead)Job Title - Application Monitoring Engineer/SME (Architect/ techincal lead)

TESTINGXPERTS, INC. DBA DAMCOSOFTCompany Name - TESTINGXPERTS, INC. DBA DAMCOSOFT

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Third Party, Contract

Strong application performance monitoring experience with experience in AppDynamics Proven experience as an APM Architect or similar role, with a strong understanding of application performance monitoring tools (e.g., Dynatrace, New Relic, AppDynamics). In-depth knowledge of cloud services (e.g., AWS, Azure, Google Cloud) and on-premises infrastructure. Experience in AIOps platforms such as Bigpanda, Splunk, AWS CloudWatch, Dynatrace etc are a plus In-depth knowledge of at least one or more prog

Engine Systems Design & Analysis Team- Staff Propulsion Design EngineerJob Title - Engine Systems Design & Analysis Team- Staff Propulsion Design Engineer

Relativity SpaceCompany Name - Relativity Space

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Long Beach, California, USA

Full-time

Vehicle Systems & Integrated Test Team- Staff Stage Development EngineerJob Title - Vehicle Systems & Integrated Test Team- Staff Stage Development Engineer

Relativity SpaceCompany Name - Relativity Space

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Long Beach, California, USA

Full-time

MES Engineer - Global Proficy Platform Lead (Remote)Job Title - MES Engineer - Global Proficy Platform Lead (Remote)

Procter & GambleCompany Name - Procter & Gamble

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Remote or Cincinnati, Ohio, USA

Full-time

Information Technology at Procter & Gamble is where business, innovation and technology integrate to build a competitive advantage for P&G. Our mission is clear -- we deliver IT to help P&G win with the over 5 billion consumers we serve worldwide. Our IT professionals are diverse business leaders who apply IT expertise to deliver innovative, tech-focused business models and capabilities for our 65 iconic, trusted brands. From Day 1, you'll be trusted to dive right in, take the lead, use your

Sr Mechanical/Process Design Engineer/Technical Lead (Pharma/cGMP/FDA) - Remote (East Coast)Job Title - Sr Mechanical/Process Design Engineer/Technical Lead (Pharma/cGMP/FDA) - Remote (East Coast)

JobotCompany Name - Jobot

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Full-time

Sr Process Design Engineer / Technical Lead (Pharma/cGMP/FDA) - Remote (East Coast) This Jobot Job is hosted by: Tony Barhoum Are you a fit? Easy Apply now by clicking the "Apply Now" button and sending us your resume. Salary: $115,000 - $150,000 per year A bit about us: Full-Service Engineering Consulting Firm with a broad range of projects and clients within the private and public marketplaces. Our design engineers provide cost-conscious, reliable, Design/Build Solutions to meet our Clients