Principal Epitaxial Engineer The Hiring MethodPrincipal Epitaxial EngineerFremont, CaliforniaA global leader in compound semiconductor and photonics technology is seeking a Lead / Principal Epitaxial Engineer to lead the development of advanced MOCVD epitaxial growth processes supporting next-generation InP and GaAs optoelectronic devices. The successful candidate will partner closely with Device Design, Product Engineering, and Manufacturing teams to develop new epitaxial structures, improve device performance, and drive process capability from R&D through production.
NewPrincipal Signal Integrity Engineer (SI/PI) Advanced Micro Devices IncPrincipal Signal Integrity Engineer (SI/PI)San Jose, CAWorking closely with Architecture, Package Design, PCB Design, Silicon Engineering, Product Engineering, and Manufacturing teams, this engineer will play a critical role in defining technical direction, making key design tradeoff decisions, mentoring junior engineers, and delivering successful products from simulation through hardware validation. We are looking for a self-starter who can independently drive complex technical challenges, influence cross-functional stakeholders, mentor engineers, and guide critical design decisions across the product lifecycle.
Principal Systems Software Engineer, LPU NVIDIA CorpPrincipal Systems Software Engineer, LPUSanta Clara, CAWe treat AI coding agents as a primary part of the workflow, and we expect our most senior engineers to be fluent in directing them - designing systems that are legible to both humans and agents, and turning hard-won judgment into leverage across the team. Design the HAL, runtime interfaces, and data-movement pipelines the rest of the platform depends on; drive the hardest reliability and bring-up problems to root cause; and raise the throughput of the whole org by codifying the abstractions, patterns, and tooling that others build on.
Principal Product Manager - Billing Duck Creek Technologies LLCPrincipal Product Manager - BillingCAFor reference, the expected salary range for this position is generally positioned as follows based on candidate location: 171,900 - 245,500: Candidates living in the Boston, New York City-Newark, Los Angeles, San Francisco/Bay Area, Seattle, or Washington, DC metropolitan areas. Experience delivering configurable, transaction-centric platforms, including rules-driven and AI-enabled or model-informed workflows, and translating customer needs, regulatory constraints, financial controls, and analytical outputs into governed product decisions.
Principal Software Engineer, Full Stack - Reporting Rad AIPrincipal Software Engineer, Full Stack - ReportingSan Francisco, CaliforniaOur latest advancements in generative AI are used by thousands of radiologists daily, supporting more than one-third of radiology groups and healthcare systems and nearly 50% of all medical imaging in the U.S. at partners including Cone Health, Jefferson Einstein Health, Geisinger, Guthrie Healthcare System, and Henry Ford Health. For roles listed as San Francisco - Onsite + United States - Remote : We will prioritize candidates who can work onsite four days per week in San Francisco, while also considering remote candidates located anywhere in the United States.
Principal Engineer- Consumer Platform Digital First Holdings LLCPrincipal Engineer- Consumer PlatformSan Ramon, CAReact Native, React, TypeScript, Swift, Kotlin, Spring Boot, PostgreSQL, Kafka, Redis, Kubernetes, Docker, GCP, Jenkins, Terraform, Prometheus, Grafana, and OpenTelemetry, with a focus on scalable mobile architecture, cloud-native platforms, and modern engineering practices. As a Principal Engineer, you will influence engineering strategy across multiple teams, guide architectural decisions, mentor senior technical talent, and help shape the future of how millions of consumers interact with their financial institutions.
Principal Firmware Engineer FellowPrincipal Firmware EngineerSan Francisco, CaliforniaWe are committed to building diverse teams and strongly encourage people from underrepresented groups, including but not limited to women, people of color, LGBTQIA+ individuals, people with disabilities, members of ethnic minorities, foreign-born residents, and veterans to apply. Reliability & Incident Leadership: Diagnose complex field and production issues using logs, telemetry, analytics, lab reproduction, and hardware measurements; coordinate cross-functional response through resolution.
Principal Machine Learning Engineer, TEAM DoorDash IncPrincipal Machine Learning Engineer, TEAMSan Francisco, CA$282,100–$414,800 / yearWe value a diverse workforce - people who identify as women, non-binary or gender non-conforming, LGBTQIA+, American Indian or Native Alaskan, Black or African American, Hispanic or Latinx, Native Hawaiian or Other Pacific Islander, differently-abled, caretakers and parents, and veterans are strongly encouraged to apply. At DoorDash, our mission to empower local economies shapes how our team members move quickly, learn, and reiterate in order to make impactful decisions that display empathy for our range of users-from Dashers to merchant partners to consumers.
NewAssociate Principal Scientist, In Vivo Pharmacology Merck & Co IncAssociate Principal Scientist, In Vivo PharmacologySouth San Francisco, CA$159,600–$251,200 / yearRequired Skills: Assay Development, Cardiometabolic, Drug Discovery Research, Drug Research, In Vivo Models, In Vivo Pharmacology, Model Development, Pharmacology, Program Leadership, Renal Medicine, Respiratory Pharmacology, Strategic Thinking, Translational Pharmacokinetics and Pharmacodynamics (PKPD). Represent QB on project teams and collaborate with adjacent functions (Biology, Med Chem, DMPK, Safety, etc.) to enable a comprehensive pharmacology strategy that supports robust assessment of target engagement, in vitro/in vivo correlation, PK/PD relationship, and human dose projection.
Principal Scientist, Translational Clinical Biomarkers Merck & Co IncPrincipal Scientist, Translational Clinical BiomarkersSouth San Francisco, CA$190,800–$300,300 / yearFor cardiovascular and metabolic programs, develop biomarker strategies addressing areas such as target engagement, pathway modulation, disease biology, pharmacodynamic response, patient heterogeneity, and relationships between biological effects and clinical outcomes. The successful candidate will develop decision-centric biomarker strategies that integrate therapeutic mechanism, disease biology, pharmacodynamics, patient heterogeneity, dose and regimen selection, clinical endpoints, and opportunities for precision medicine.
AI Engineer, Enterprise AI (Principal/Sr. Principal/Distinguished) Palo Alto Networks IncAI Engineer, Enterprise AI (Principal/Sr. Principal/Distinguished)CA$185,200–$299,475 / yearThe person in this role will harness the power of AI using strong systems thinking, model APIs, data sources, and workflow layers in ways that improve speed, quality, and business impact. For candidates who receive an offer at the posted level, the starting base salary (for non-sales roles) or base salary + commission target (for sales/com-missioned roles) is expected to be the annual range listed below.
Principal Engineer - FDE Elevance Health IncPrincipal Engineer - FDEWalnut Creek, CA$218,208–$272,760 / yearMinimum Requirements: Requires a BA/BS degree in Information Technology, Computer Science or related field of study, and a minimum of 11 years experience; experience with multi dimensional platforms, and business and technical applications required; or any combination of education and experience which would provide an equivalent background. The Principal Engineer - FDE works with the business and technology stakeholder's on the development and delivery of end to end application technology products and services for enterprise wide technology application platforms that are aligned to the organizations strategic objectives and initiatives.
Principal Engineer Software, Tools & Platforms (Cortex) Palo Alto Networks IncPrincipal Engineer Software, Tools & Platforms (Cortex)CA$147,000–$237,500 / yearFor candidates who receive an offer at the posted level, the starting base salary (for non-sales roles) or base salary + commission target (for sales/com-missioned roles) is expected to be the annual range listed below. If you have a passion for creating tools that enhance productivity, streamline workflows, and support the operational needs of a growing infrastructure, you're the candidate we're looking for.
Principal Customer Engineer, Digital Natives Cloudflare IncPrincipal Customer Engineer, Digital NativesCAAI Orchestration & Workflow Automation: Leverage AI agents, Large Language Models (LLMs), and internal platforms to automate routine tasks such as RFP/Security Questionnaire responses, sandbox provisioning, basic telemetry monitoring, and internal/external documentation, reclaiming your time for strategic customer advisory. Technical Validation: Partner closely with Account Executives to lead technical deep-dive discovery, capture business requirements, and map complex customer infrastructure - DNS, CDN, Zero Trust, Network Security, Workers - to fit-for-purpose Cloudflare architectures and bespoke solutions.
Principal Design Verification Engineer - CPU Core Frontend SiFive IncPrincipal Design Verification Engineer - CPU Core FrontendSanta Clara, CADrive verification of branch prediction structures and flows, including direction prediction, indirect target prediction, return prediction, predictor update/training behavior, redirect generation, recovery, and interaction with global history or related predictor state. SiFive's unrivaled compute platforms are continuing to enable leading technology companies around the world to innovate, optimize and deliver the most advanced solutions of tomorrow across every market segment of chip design, including artificial intelligence, machine learning, automotive, data center, mobile, and consumer.
Principal Technical Director - Neural Rendering Electronic Arts IncPrincipal Technical Director - Neural RenderingRedwood City, CA$204,600–$287,500 / yearCreator-made content is already a proven part of EA''s history - from community creation tools in Battlefield to The Gallery in The Sims 4. We believe new creative technologies and tools will expand how players engage with and contribute to our experiences, supported by thoughtful product design, safety systems, and global reach. Qualifications: 20+ years of PC or console game programming experience, with shipped AAA games or having worked with a game engine such as Unity, Unreal, Frostbite, Godot, or similar technologies.
NewPrincipal AI Outcomes Manager ThoughtSpot IncPrincipal AI Outcomes ManagerCAWhen risk emerges - adoption stalls, champion turnover, competitive pressure, unresolved technical blockers - surface it early, communicate it internally with clarity, and align the right ThoughtSpot resources (CS leadership, Support, Services, Product) to address it before it becomes a renewal threat. You understand how analytics and AI platforms work inside large enterprises - how they are governed, how they scale, where adoption stalls, and what genuine AI-driven decision-making looks like in practice.
NewPrincipal Scientist, Antibody Discovery Innovation Merck & Co IncPrincipal Scientist, Antibody Discovery InnovationSouth San Francisco, CA$176,200–$277,300 / yearAs a member of the Antibody Generation leadership team, will work across groups within Discovery Biologics and with departments across Our Company's enterprise to set and deliver on our strategic goals in pipeline advancement, scientific excellence, and talent development. Preferred Experience and Skills: Ideal candidate will have experience in protein therapeutics beyond traditional mAbs including alternative non-Ig scaffolds, multi-specifics, fusion proteins, and ADCs.
Principal Applications Engineer Mass Spectrometry Veracity Software IncPrincipal Applications Engineer Mass SpectrometryMilpitas, CAYes/No): Motivation / Reason for interest in this opportunity: Work Authorization (US Citizen / Green Card Holder): Expected Salary: Notice Period / Earliest Joining Date: Contact Number: Email ID: LinkedIn Profile URL: Full Address (Street, City, State, ZIP Code): Are you willing to work 100% onsite in Milpitas, CA? Full Name: Highest Degree (Bachelor's/Master's) – University & Completion Year: Total Years of Applications Engineering / Applications Scientist Experience: Do you have hands-on experience with analytical instrumentation such as Mass Spectrometers and Gas Analyzers?
NewPrincipal Engineer, Efficient GenAI Advanced Micro Devices IncPrincipal Engineer, Efficient GenAISan Jose, CAImpactful Work: Your contributions will directly influence how cutting-edge Generative AI models across the industry are efficiently trained at scale, as well as how inference solutions are deployed to serve millions of customers, making a significant difference across various industries and applications. THE PERSON: You have a deep technical understanding and hands-on experience with the latest Generative AI applications in at least one of the following areas: large language models (LLMs), 3D World and Action Models, or image/video generation models.