440 Results for

Principal Engineer Jobs in San Francisco, CA

Jobs

New!

San Francisco, CA2 days ago

$225,000–$275,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. We’re an early-stage, high-growth B2B fintech company building a modern platform that sits at the intersection of data, liquidity, and complex financial workflows.

Milpitas, CA10 days ago

$70–$75 Per Hour
Temporary
Contractor
Full-time

This is a senior-level role within the Analytics organization, responsible for building scalable and secure analytics platforms by ingesting data from multiple enterprise systems, transforming it into trusted and governed data products, and enabling business-critical analytics across Procurement, Vendor Management, and Inventory domains. The ideal candidate will possess deep hands-on engineering expertise, strong business domain knowledge, and proven technical program management capabilities to drive complex cross-functional initiatives.

New!

Concord, CA2 days ago

$80,000–$105,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Jobot, and/or its agents and contracted partners.

New!

Fremont, CA1 day ago

$70,000–$110,000 Per Year

Job Details: As a Project Engineer in the Construction industry, you will be a vital part of our team, working on a variety of projects in the general contracting, commercial ground-up, healthcare, life sciences, educational, civic, and biotechnology sectors. Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal.

New!

Pleasanton, CAToday

$100,000–$120,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. As a project engineer on our team, you will be responsible for overseeing he technical, financial, and administrative execution of construction projects while supporting the Project Manager and Superintendent.

New!

Pleasanton, CAToday

$120,000–$150,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. As a senior project engineer on our team, you will be responsible for overseeing he technical, financial, and administrative execution of construction projects while supporting the Project Manager and Superintendent.

New!

Alameda, CA2 days ago

$100,000–$180,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. The successful candidate will be responsible for managing a variety of commercial plumbing projects from start to finish, ensuring they are completed on time and within budget.

New!

San Francisco, CA1 day ago

Remote

$220,000–$300,000 Per Year

High-growth, profitable SaaS company transitioning into an AI infrastructure platform is seeking a highly technical and strategic engineering leader to oversee Engineering operations and partner cross-functionally with Product, Finance, and executive leadership. *The ideal candidate is a Director of Engineering who has been working for a Series A/B, $5-$25M annual revenue startup, whom has remained highly technical but has learned cross-functional management skills, as well - and whom is ready for a change and grow in a new startup environment.

New!

Fremont, CA1 day ago

Oakland, CA7 days ago

$90–$130 Per Hour

Mature and operationalize the ransomware recovery governance program through handson process development, technical validation, and continuous improvement. * Partner in the development of the ransomware incident response plan and lead technical exercises, simulations, and tabletop activities.

Fremont, CA8 days ago

$90–$100 Per Hour

Technical Analysis: including process system and technology plant fits, capacity and equipment utilization, value engineering, sustainable design, constructability and assessment of applicable new technologies to balance performance, cost and maintainability. The ideal candidate will bring strong technical expertise in GMP manufacturing environments, hands-on process equipment experience, and proven project leadership capabilities within biopharmaceutical operations.

New!

Oakland, CA2 days ago

$110,000–$120,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Our team specializes in precision machining, assembly, and finishing of complex metal components, providing durable, high-quality products with visually striking finishes.

New!

Santa Clara, CA1 day ago

$85,000–$90,000 Per Year

Master required job-specific and technical skills in order to promote to an assistant superintendent or assistant project manager following the 12-month training program including, but not limited to, the ability to: Set up and maintain jobsite office and all jobsite records, including project directory, construction documents, subcontractor directory, daily reports, submittal logs, RFI logs, subcontractor correspondence, etc. Ability to learn sector- and project-specific software systems, including but not limited to: Microsoft Office 365 (Project, Excel, Word, Outlook, PowerPoint, etc.), ProCore, Adobe Suite, BlueBeam, and JD Edwards software suite .

Pleasant Hill, CA11 days ago

Evaluate interoperability, control features, and communication/protocol aspects of IEC's serving as protection relays. Ensure high-quality design of protection schemes for T&D substations, Data Centers, Industrial, BESS applications.

Fremont, CA15 days ago

Temporary
Contractor
Full-time

This role serves as the Engineering technical lead on Bulk Drug Substance (BDS), Drug Product (DP), and/or Process Science (PS) systems, including upstream and downstream equipment. The successful candidate will troubleshoot equipment/process issues, lead CAPEX/OPEX projects, and manage change control and deviation/risk assessment activities within a GMP environment.

Belmont, CA10 days ago

Full-time

As a Principal 5G Location Algorithms Engineer, you will design, implement, and optimize advanced signal processing and location estimation algorithms to determine the real-time position of devices in the physical world.

Union City, CA30+ days ago

As a Senior Associate Principal Engineer at Southland Industries, you'll experience the excitement of working on design-build and design-assist projects in healthcare, education, biotech, mission critical, commercial and entertainment markets. Candidate ownership can only be established after a bona fide work order is issued by a member of the Southland Industries Talent Acquisition team and the candidate is appropriately submitted through our Applicant Tracking System (ATS).

Pleasanton, CA30+ days ago

Full-time

We’re expanding our Bay Area leadership team and seeking a Principal Engineer to oversee multidisciplinary projects, manage client relationships, and lead strategic business growth throughout Northern California. This person will help lead the planning, design, and delivery of civil engineering projects while managing teams across multiple disciplines, including surveying and construction management.

New!

Fremont, CA3 days ago

$176,300–$253,700

Our cutting-edge solutions enable unparalleled “time-to-power” capabilities, reliability, and sustainability, ensuring our customers remain ahead in a world where soaring energy demand and intensifying energy scarcity are rapidly becoming the new norm. For over two decades, we’ve been at the forefront of the global energy transition, pioneering solutions that empower critical industries to thrive in a rapidly digitizing, energy-intensive world.

Palo Alto, CA30+ days ago

The Principal Electrical Engineer is a senior technical leader responsible for developing Butterfly's industry leading ultrasound products from concept to commercial launch and production scale-up. As part of our team, your core responsibilities will be: Lead electrical architecture and design for medical devices across the full product lifecycle, from early feasibility and risk analysis through design transfer, manufacturing, and post-market support.

Emeryville, California30+ days ago

$95,000–$180,000 Per Year

You develop precise, high-quality designs, coordinate with other disciplines, and connect with clients to ensure solutions meet real-world needs. Client & Cross-Disciplinary Collaboration: Build strong relationships with clients through professional interactions and communications, and through the development of quality engineering products.

Mountain View, CA30+ days ago

$194,670–$282,735 Per Year

The Principal Engineer partners with engineering, safety, and VW Group homologation teams to embed compliance into product development, anticipate regulatory trends, mitigate certification risks, and maintain approval validity throughout the vehicle lifecycle, enabling CARIAD to deliver globally compliant and innovative mobility solutions. This role serves as a subject-matter expert, guiding teams through complex global regulatory landscapes, ensuring that all ECU hardware, software, and system integrations meet automotive compliance requirements for successful market launch.

Menlo Park, California30+ days ago

$241,000–$294,500 Per Year

Our Opportunity: We are currently seeking a Principal Engineer for our Thermal Sciences Practice in Menlo Park, CA; Natick, MA; Chicago, IL Metro Area; Atlanta, GA; Seattle, WA; Los Angeles, CA; Denver, CO; Houston, TX; New York, NY; Washington DC Metro Area; Philadelphia, PA; Tampa, FL; or Phoenix, AZ. D. or Master’s Degree in Chemical Engineering, Mechanical Engineering, Aerospace Engineering, Petroleum Engineering, Fire Protection Engineering, or a related field, with a practical and theoretical understanding of combustion, heat transfer and fluid mechanics.

Sunnyvale, CA15 days ago

Full-time
Employee

As the Cloud Networking AI Principal Engineer for Network Security, you will provide strategic direction to Google’s Networking Security portfolio, including the development of next-generation security offerings by leveraging AI and autonomous AI agents. Collaborate with senior leaders to ensure Google Cloud Platform (GCP) continues to be the most secure cloud for enterprise applications as they broadly adopt agentic workflows.

Sunnyvale, CA17 days ago

Full-time
Employee

You will be responsible for driving forward-looking, end-to-end solutions to Google's significant AI infrastructure challenges, partnering across DCOps and teams across AI2 to ensure operational efficiency, agility, and rigor is baked into our operations and long-term strategy. Preferred qualifications: Experience defining and delivering technical roadmaps for large-scale, global infrastructure, resulting in measurable improvements in reliability, efficiency, or operational excellence.

Fremont, CA30+ days ago

$155,800–$224,200

San Francisco, CA30+ days ago

$206,400–$276,700 Per Year

Our work involves optimizing media processing, introducing new media codecs, developing quality and performance assessment frameworks and conducting innovative media R&D towards future platform capabilities for the purposes of achieving velocity, scale, and efficiency through an optimized media platform as well as redefining storytelling through innovative media experiences. You will be part of a team conducting innovative research and advanced development involving advanced computer vision algorithms and applied ML/AI techniques to address the tasks such as media enhancement, understanding, analysis, compression, and enhancing storytelling through innovative media experiences.

New!

San Francisco, CA6 days ago

$170,000–$225,000 Per Year

Activities include the geometric design of runways, taxiways, and aprons; bituminous and concrete pavement design; stormwater and utility infrastructure design; coordination with airports, airlines, FAA and other tenants; and construction administration/management. Joining our Aviation team means an opportunity to explore your potential and apply your diverse skills to serve the large and small airports of the aviation industry as a trusted advisor.

Fremont, CA30+ days ago

$180,000–$200,000

Support and guide cell-level testing activities, providing an integration perspective to ensure test plans, results, and data interpretation align with product requirements and customer application needs. • Serve as a technical escalation point for Sales, Strategic Accounts, and Business Development teams, providing expert guidance on cell performance, specifications, and test data to external customers.

Santa Clara, California21 days ago

As a Principal CAD PCB Physical Design Engineer in the Network Technology Solutions Group, NTSG, you will be responsible for the PCB physical design and the technology development for AMD NTSG products in this expanding and strategic market for AMD. We push the limits of innovation to solve the world’s most important challenges—striving for execution excellence, while being direct, humble, collaborative, and inclusive of diverse perspectives.

New!

Fremont, CA1 day ago

$178,800–$257,200

Our cutting-edge solutions enable unparalleled “time-to-power” capabilities, reliability, and sustainability, ensuring our customers remain ahead in a world where soaring energy demand and intensifying energy scarcity are rapidly becoming the new norm. The Senior Network Engineer is responsible for overseeing all aspects of network functionality, delegating tasks, resolving complex technical issues, and driving new initiatives and projects to completion.

San Mateo, CA29 days ago

$295,250–$345,040 Per Year

Bonus] Advanced Cache Internals: Experience extending cache functionality (e.g., writing custom Redis modules in C/Rust, complex Lua scripting) or deep-tuning underlying memory allocators like jemalloc. Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators.

Santa Clara, CA30+ days ago

Full-time

The Principal R&D Software Engineer will lead technical development of innovative electronic systems to treat peripheral and heart valve diseases, will participate on multiple cross-functional development teams that manage projects from concept through commercialization, and will perform and support a variety of development and engineering activities with primary focus on analog high-voltage circuit design and development. San Francisco, California, United States of America, San Jose, California, United States of America, Santa Clara, California, United States of America, South San Francisco, California, United States of America.

Newark, CA13 days ago

$150,000–$170,000 Per Year

Led by a management team with significant experience in cell therapy, Allogene is developing a pipeline of “off-the-shelf” CAR T cell product candidates with the goal of delivering readily available cell therapy on-demand, more reliably, and at greater scale to more patients. Allogene Therapeutics, with headquarters in South San Francisco, is a clinical-stage biotechnology company pioneering the development of allogeneic chimeric antigen receptor T cell (AlloCAR T) products for cancer and autoimmune disease.

Pleasanton, California30+ days ago

Make Your Mark: As a Principal Software Engineer, you will play a crucial role in delivering high quality releases to our customers by defining application architecture, designing, developing, troubleshooting, maintaining, optimizing, and scaling BlackLine's cloud-based backend services and driving innovation into our product suite. You will research, test, benchmark and evaluate new technologies, propose scaling solutions, collaborate with other teams to define, and build new features, optimize existing features while writing elegant code, coaching, and mentoring less experienced software engineers and communicating with people at all levels.

Pleasanton, CA30+ days ago

As a Principal Software Engineer, you will play a crucial role in delivering high quality releases to our customers by defining application architecture, designing, developing, troubleshooting, maintaining, optimizing, and scaling BlackLine's cloud-based backend services and driving innovation into our product suite. You will research, test, benchmark and evaluate new technologies, propose scaling solutions, collaborate with other teams to define, and build new features, optimize existing features while writing elegant code, coaching, and mentoring less experienced software engineers and communicating with people at all levels.

San Mateo, CA30+ days ago

$293,800–$343,340 Per Year

If you enjoy working on modern distributed systems, products for developers, C# and C++ software, and networking challenges alongside highly-experienced and passionate engineers, you will be right at home on our growing Creator Services team. Experienced with native code: You have worked on deep and challenging problems in complex networked codebases, with 3+ years of experience in C++ to support working on full stack features that involve the Roblox engine & our backend systems.

New!

Sunnyvale, CA1 day ago

Full-time
Employee

Note: By applying to this position you will have an opportunity to share your preferred working location from the following: Sunnyvale, CA, USA; Kirkland, WA, USA; New York, NY, USA.Minimum qualifications: Bachelor's degree in Computer Science, a related technical field, or equivalent practical experience. Cloud Pub/Sub differentiates itself through its serverless operation, global scale, high reliability with at-least-once delivery, and seamless integration with other Google Cloud services for data analytics and event-driven workflows.

Santa Clara, CA30+ days ago

$135,000–$155,000 Per Year

Most recently, we were recognized Stevie Employer of the Year 2025, SIA Best Staffing Firm to work for 2025, Inc 5000 Best Workspaces in US (2025 & 2024) and Glassdoor's Best Places to Work (2023 & 2022)! This influential role demands the architecture and refinement of tools, processes, and systems vital for our engineering workforce, with a strategic focus on implementing AI-powered tools to significantly advance our development processes.

Santa Clara, California30+ days ago

Palo Alto, CA30+ days ago

$180,000–$280,000

You'll work across multiple projects, often at the earliest stages, helping define system architecture, build prototypes, and bring products from concept into the real world. Our partner is looking for a Principal Mechanical Engineer to join the core team and help lead the design, development, and execution of hardware systems across new ventures.

Santa Clara, CA30+ days ago

Full-time

As a critical member of an innovation driven team of engineers and scientists, you will be responsible for directly interfacing with our customers, researching, designing, developing, testing, and qualifying optical systems and opto-mechanical assemblies. We are a vertically integrated manufacturing company that develops innovative products for diversified applications in the industrial, optical communications, military, life sciences, semiconductor equipment, and consumer markets.

San Mateo, CA30+ days ago

$326,060–$385,050 Per Year

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone.

Mountain View, CA30+ days ago

$194,670–$282,735 Per Year

Lead Enhanced Stress Screening (ESS), HALT (Highly Accelerated Life Testing), and other reliability testing to identify potential early-life failures. Experienced in collaborating with cross-functional teams, including software engineering, hardware engineering, and mechanical engineering teams.

San Jose, CA30+ days ago

The position serves as a trusted technical advisor to some of the world’s most advanced technology companies, partnering closely with customers and internal engineering teams to shape next-generation power system solutions. Success in this position requires deep expertise in DC-DC converters and power systems, strong customer communication skills, and the ability to translate complex technical requirements into innovative, scalable architectures.

San Mateo, CA16 days ago

$295,250–$345,040 Per Year

Pleasanton, California30+ days ago

Sunnyvale, CA17 days ago

Full-time
Employee

As a Principal Software Engineer, Applied AI, Office of the CTO, Google Cloud, you will create and reinforce the human pathways between Google Engineering and our most strategic customers and partners, allowing all of us to start from loosely defined, potentially transformative market opportunities and convert them into new, technology-enabled businesses. Note: By applying to this position you will have an opportunity to share your preferred working location from the following: Sunnyvale, CA, USA; New York, NY, USA; Seattle, WA, USA.Minimum qualifications: Bachelor's degree in a technical field, or equivalent practical experience.

Mountain View, CA7 days ago

You'll design, simulate, and validate mmWave front-end circuit blocks for our next-generation beamformer chips—including LNAs, PAs, phase shifters, VGAs, and complete transceiver signal chains. Design mmWave front-end circuit blocks (PAs, LNAs, phase shifters, VGAs, mixers) in advanced CMOS or RFSOI (SiGe and III-V processes are a plus).

Mountain View, CA7 days ago

Full-time
Employee

Collaborate with technical leads on other cross-functional teams (CoreX, Gemini/Research, YouTube Data, and Machine Learning Infrastructure) to integrate next-gen infrastructure and generative AI capabilities that improve the user and content understanding and responsiveness of the retrieval and ranking systems. Partner with the Engineering Director to set and execute against the technical outlook to deliver against our time-sensitive multiyear product growth strategy and roadmap, balancing short- and long-term priorities against business needs.

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Principal Engineer Jobs in San Francisco, CA

Principal Product Designer Jobot

Principal Data Engineer Flexton Inc

Project Engineer Jobot

Construction Project Engineer Jobot

Project Engineer - Commercial Construction Jobot

Senior Project Engineer - Commercial Construction Jobot

Project Engineer-Plumbing or HVAC Jobot

Sr. Engineering Manager (*startup experience req'd) - 100% REMOTE Jobot

NPI Project Engineer Davron LLC

(IT PSP) IT Solutions Engineer V Axelon

Project Engineer III Joulé

Process Engineering Manager - Powder Coating Jobot

Commercial Construction Project Engineer HITT Contracting

Controls Engineer IV Axelon Services Corporation

Project Engineer III Genesis10

Principal 5G Location Algorithms Engineer GPS Company

Senior Associate Principal Engineer Southland Industries Inc.

Principal Engineer, Regional Office Lead R.E.Y. Engineers

Principal Electrical Engineer, NPI BloomEnergy

Principal Engineer, Electrical Engineer Butterfly Network

Mid - Principal Electrical Engineer - Data Center Mission Critical Enercon Services, Inc.

Principal Engineer, Homologation & Cert Cariad, Inc.

Principal Engineer - Thermal Sciences (MS/PhD) Exponent Inc.

Principal Engineer, AI Network Security Google

Principal Engineer, Infrastructure and Data Center Operations Google

Principal Automation Systems Engineer BloomEnergy

Principal Software Engineer The Walt Disney Company

Principal Airfield Engineer RS&H

Battery Integration Principal Engineer Amprius Technologies, Inc.

Principal PCB Physical Design Engineer Advanced Micro Devices, Inc

Sr. Principal Engineer BloomEnergy

Principal Software Engineer - Storage Cache Roblox

Principal R&D Software Engineer - Shockwave Johnson and Johnson

Principal Engineer, Manufacturing Science and Technology Allogene Therapeutics

Principal Engineer BlackLine

Principal Engineer Blackline

Principal Engineer - Creator Services Roblox

Principal Engineer, Streamling Analytics Google

Principal Engineer Software: 26-00518 Akraya Inc.

Principal Engineer - GPU Software Architect Advanced Micro Devices, Inc

Principal Mechanical Engineer Calbuco Consulting

Senior Principal Optical Engineer Coherent Corp.

Principal Security Software Engineer, Application Security Roblox

Principal Hardware Engineer, Validation Cariad, Inc.

Principal Systems Engineer Sterling Engineering, Inc.

Principal Frontend Engineer, Co-Experience Roblox

AI/ML OPs Principal Engineer BlackLine

Principal Engineer, Specialized Software Google

Principal RFIC Design Engineer Oso Semiconductor Inc.

Principal Engineer, YouTube Shorts, Viewer Feed Quality Google

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