Principal Scientist Jobs

Toast creates technology to help restaurants and local businesses succeed in a digital world, helping business owners operate, increase sales, engage customers, and keep employees happy. Your mission is to lead the architectural design, technical execution, and implementation of AI agents and infrastructure for Toast's Team area within our FinTech line of business. The Team area is a mission-critical space on which our restaurants rely to manage their staff and optimize their labor. As a Principal Engineer, you will serve as a key technical leader in the group, driving modern architectural patterns—including spec-driven development and agentic workflows—to deliver high-impact software. A Day in the Life (Responsibilities) Define and execute the technical architecture for AI agents within the Team domain, ensuring systems are scalable, reliable, and secure. Partner closely with Engineering Managers and Product Managers to translate product roadmaps into robust technical designs and deliverables. Maintain a strong hands-on presence, writing code, prototyping new patterns, and resolving complex technical bottlenecks under load. Collaborate with Principal and Senior Principal Engineers across Toast to align on best practices, agent patterns, and spec-driven development paradigms. Guide, mentor, and elevate engineers within the Team area, fostering a culture of technical excellence and continuous learning. What You'll Need to Thrive (Requirements) 10+ years of experience designing, building, and operating highly scalable, mission-critical distributed systems and SaaS products (ideally AWS-hosted). Proven track record of leading complex technical initiatives and delivering robust software architecture from design to production. Strong enthusiasm for agentic development practices, LLM integration, and modern software paradigms. Balanced expertise: Ability to design high-level technical solutions on a whiteboard while remaining deeply connected to code-level execution and s

Toast creates technology to help restaurants and local businesses succeed in a digital world, helping business owners operate, increase sales, engage customers, and keep employees happy. As a Principal Engineer / architect you will be responsible for creating a technical strategy and coordinating the designs for meeting the needs of Toast’s largest restaurant brands. You will partner with Product Managers to develop the technology roadmap that enables enterprise customers to leverage the power of Toast. You will also work closely with technical leaders and implementation teams across the organization to deliver robust, scalable solutions with integrations to customers’ external systems. While the role is primarily internally-facing, it requires infrequent interactions with enterprise customers, listening to their requirements and providing expert guidance as they deploy Toast. If you’re a technical leader or a solutions architect, experienced with enterprise SaaS, passionate about customer value, and a great collaborator, read on! A day in the life (Responsibilities) Lead the evolution of Toast’s backend architecture , frameworks, and data models with a strong focus on delivery efficiency, system scalability, and resilience. Design and build the next generation of accounting and financial systems using Java, Kotlin, DynamoDB, Pulsar, GraphQL, Big Data tools , and more. Define and implement scalable engineering practices , delivery frameworks, and coding standards that raise the technical bar across the org. Collaborate cross-functionally with Product, UX, QA , and multiple engineering teams to deliver robust, customer-facing solutions. Build and maintain strong partnerships across business units, aligning technology strategies with key company objectives. Champion data-driven decision making by developing strategies and prioritizing initiatives with high impact on user and business outcomes. Mentor and grow engineers across levels, promoting a culture of inclu

Toast is building the restaurant platform that helps restaurants adapt, take control, and get back to what they do best: running the businesses they love. We’ve grown into a leading hospitality software company in the U.S., and are now entering our next phase of growth—one defined by scale, complexity, and a new class of enterprise customers. Every restaurant is unique, and a restaurant’s menu expresses its individual brand and product offerings. Inside a Toast restaurant, the definition of the menu becomes the common language between guests, servers, and the kitchen. In our digital ordering products, a great menu serves as both a billboard and a roadmap to an excellent dining experience. It is the central hub for restaurant configuration– it determines what guests can order, how the dishes are presented and priced in different contexts, where they are routed for fulfillment and how they are coursed, how they are prepared, whether the ingredients are still available, and how they are classified for reporting. A menu is always evolving: kitchens create new dishes, managers experiment with pricing and presentation, and staff optimize the menu for restaurant operations. We create products to satisfy the vast breadth of our restaurants, from single-location coffee shops to complex enterprise brands with thousands of locations. We offer an extremely powerful and configurable menu platform, and our team exists to ensure that this flexibility can be managed effectively at any scale. This includes feature-rich menu data models, APIs for both first and third party integrations (eg: DoorDash and other ordering partners), and the user experiences for configuring menus that meet a vast variety of needs, from complex customer segments (eg: Pizza shops) to our evolving Retail platform. We are looking for a visionary engineer who is motivated by these challenges and eager to transform our menus architecture to meet the dynamic needs of our customers and our rapidly gro

Become a part of our caring community The Principal Storage Engineer is a senior technical leader responsible for defining and advancing the enterprise storage architecture and long-term data infrastructure strategy. This role establishes standards, develops five-year technology roadmaps, and designs secure, resilient, scalable, and cost-effective storage platforms for business-critical, analytics, and artificial intelligence workloads. The engineer serves as the organization’s storage subject-matter expert and partners with infrastructure, cloud, security, data, application, architecture, finance, and vendor teams to translate business requirements into sustainable technology capabilities. The Principal Storage Engineer is a senior technical leader responsible for defining and advancing the enterprise storage architecture and long-term data infrastructure strategy. This role establishes standards, develops five-year technology roadmaps, and designs secure, resilient, scalable, and cost-effective storage platforms for business-critical, analytics, and artificial intelligence workloads. The engineer serves as the organization’s storage subject-matter expert and partners with infrastructure, cloud, security, data, application, architecture, finance, and vendor teams to translate business requirements into sustainable technology capabilities. Key Responsibilities Define the enterprise storage vision, reference architecture, engineering standards, and five-year roadmap across block, file, object, software-defined, and hybrid storage services. Lead architecture decisions for on-premises AI infrastructure, including high-throughput and low-latency storage fo

Principal Data Privacy Architect Description - Job Summary - Role Purpose • Lead and oversee complex, cross-functional privacy and data protection programs from strategy through implementation, ensuring alignment across business, technical, legal, and compliance stakeholders. • This role will design and implement scalable, AI-ready data privacy architecture across enterprise data environments, applications, and AI-enabled workflows. • The Principal Data Privacy Architect will serve as a hands-on subject matter expert responsible for embedding privacy-by-design, consent enforcement, data sovereignty, data loss prevention, and compliance controls into large, complex global data environments. • The architect will partner closely with Data Engineering, Cybersecurity, Legal, Privacy, AI Governance, Product, and Enterprise Architecture teams to ensure customer, employee, partner, and sensitive enterprise data is accessed, processed, shared, retained, and protected in a compliant, secure, and trustworthy manner. - Why This Role Matters • Architect for Trust & Scale: Build reusable privacy architecture patterns that enable secure, compliant, and scalable data usage across platforms, products, and regions. • Enable Responsible AI: Design privacy guardrails for AI agents, generative AI, RAG pipelines, model inputs and outputs, embeddings, vector stores, and automated data workflows. • Reduce Risk While Enabling Innovation: Translate privacy, consent, regulatory, and data sovereignty obligations into practical engineering controls that accelerate business outcomes. Responsibilities - Think Customer First • Embed customer trust, transparency, and privacy-by-design principles into enterprise data platforms and customer-facing applications. • Design consent-aware data access and usage p

Principal Electro-Optical Infrared Design, Assembly, Integration, and Test Engineer Company: The Boeing Company Boeing Defense, Space and Security (BDS) is seeking a Principal Electro-Optical Infrared Design, Assembly, Integration, and Test Engineer (Level 6) for a satellite development program in Huntington Beach or El Segundo, California. This position will lead a team of engineers, analysts and staff within the Space and Missile Systems (SMS) and Boeing Technology and Innovation (BTI) Mission Systems organizations in the development, assembly, integration, and test of a constellation of satellites. The SMS and BTI organizations develop and capture technology for designing disruptive Mission Systems solutions. Focused on visible and infrared spectrum Electro-Optics Infrared (EO/IR) sensors operating in Space and Air domains, our growing team is leaping ahead of our competition with an exceptional mix of mission architectures, sensor designs, and algorithms for advanced image and data processing. Position Responsibilities: Drives technical excellence throughout all Optical Sensor development activities Troubleshoots sensor design and integration issues with the telescope and sensor focal plane Provides technical leadership to SMS and BTI sensor teams Serves as the primary technical interface with the EO/IR suppliers Provides oversight and approval of technical approaches, products and processes. Works closely with program manager, program chief engineer, and other Boeing teams Ensure mission success and prompt resolution of anomalies Provides mentoring and coaching to Optical Sensor Engineers and Technicians Performs Technical Lead Engi

Job Details: Job Description: As the world's largest chip manufacturer, and a global leader in innovation and new technology, Intel strives to make every facet of semiconductor manufacturing state-of-the-art - from semiconductor process development and manufacturing, through yield improvement to packaging, final test and optimization, and world class Supply Chain and facilities support. Employees in the Technology Development and Manufacturing Group are part of a worldwide network of design, development, manufacturing, and assembly/test facilities, all focused on utilizing the power of Moore's Law to bring smart, connected devices to every person on Earth. We're constantly working on making a more connected and intelligent future, and we need your help. Change tomorrow. Start today. What we offer: We foster a collaborative, supportive, and exciting environment where the brightest minds in the world come together to achieve exceptional results. We give you opportunities to transform technology and create a better future, by delivering products that touch the lives of every person on earth. What we do: Join the Logic Technology Development (LTD) organization, a powerhouse of process technology innovation driving Intel's IDM 2.0 strategy to exceed the aspirations of our global customers. We are seeking a visionary Principal Engineer to lead the charge in Intel's foundry revolution, serving as a strategic technical architect and executive partner in guiding our most critical customers through the entire product development lifecycle. In this leadership capacity, you will orchestrate multidisciplinary strategies spanning device engineering, product integration, and yield analysis to steer customers from critical design tape-out and pre-silicon evaluation through to NPI silicon qualification. Furthermore, you will define t

Drata is building the trust layer between great companies - automating compliance, managing risk, and helping organizations prove trust continuously as they scale. We're Dratanauts: a global crew of 600+ professionals united by a culture that rewards integrity, ownership, and raising the bar, no matter where in the world we're working from. Why Join the Drata Team? At Drata, you're not maintaining legacy compliance software - you're building the agentic AI platform defining what trust looks like for the next generation of companies. Here's what makes the work itself worth showing up for: Problems without a playbook: You'll work at the edge of AI and security, building agentic governance, continuous compliance, and real-time trust verification to solve problems that don't have an established answer yet. You're writing it as you go. Real ownership, not just process: Our values center on owning outcomes and raising the bar, not checking boxes. You're expected to have opinions and back them. A seat at the table: Your perspective is unique and valued. Open debate and diverse viewpoints are built into how decisions actually get made here, at every level. Growth at rocketship speed: Drata is scaling fast, which means scope grows fast too. High performers get more ownership, visibility, and experience. A crew, not just coworkers: Dratanauts consistently describe a "come as you are" culture with sharp, curious people—the kind of team that makes hard problems genuinely fun to solve. See what they say here and follow us on LinkedIn for company news, employee stories, and career updates. Job Summary: We’re looking for a Principal Product Manager, Agentic AI Platform to lead Drata’s Agentic AI strategy and execution. In this role, you will own a multi-year AI vision that spans product lines and influences company-level strategy, building AI-native experiences that help customers get real GRC work done—not just chat with their data. You’ll sit in the AI Pillar , working across Pr

Our vision is to transform how the world uses information to enrich life for all . Micron Technology is a world leader in innovating memory and storage solutions that accelerate the transformation of information into intelligence, inspiring the world to learn, communicate and advance faster than ever. As the Operations Central Team (OCT) Dry Etch Tool Installation Qualification (TIQ) Engineer at Micron Technology, Inc., you will be building growth mindset, facilitate and drive improvement on Micron TIQ engineering globally, driving global business processes, and enabling the leverage of world-wide resources to deliver industry benchmark methods. And you are also responsible for leading the activities to achieve the Best in Class (BIC) TIQ performance (cost and schedule) across the network and industry. You are encouraged to work closely with the key partners (sites, central team partners and suppliers) to identify areas of opportunities and analyze their performance-to-plan data to improve TIQ performance. Micron is attracting the diversified and dedicated candidate to build innovative solution for all aspects. Responsibilities As a Principal Engineer, Dry Etch Tool Installation Qualification for OCT, you will be considered an area domain expert in Dry Etch and will work as a site partner with Micron FABs globally and supplier partner with suppliers. • Understand short-term and long-term Cost goals within Front End and ensure alignment to corporate business goals. Initiate and drive across function programs to achieve department business goals • Facilitate the definition of program scope, goals, deliverables, timeline and resource requirements in collaboration with sponsors and partners • Manage the definition, refinement, and implementation of core methodologies and tools for bus

Our vision is to transform how the world uses information to enrich life for all . Micron Technology is a world leader in innovating memory and storage solutions that accelerate the transformation of information into intelligence, inspiring the world to learn, communicate and advance faster than ever. Our vision is to transform how the world uses information to enrich life for all . Micron Technology is a world leader in innovating memory and storage solutions that accelerate the transformation of information into intelligence, inspiring the world to learn, communicate and advance faster than ever. As a TCAD Engineer in the DRAM Device Technology group at Micron Technology, Inc., you will work with an industry-leading team to model, simulate, and understand advanced semiconductor devices and processes for future memory products. You will be responsible for physics-based device simulation, supporting technology development by providing quantitative insight into device behavior, variability, and reliability through TCAD tools. Responsibilities and Tasks Develop and apply TCAD simulations to analyze advanced semiconductor devices including DRAM access devices, CMOS devices, diodes, and resistive elements. Build 2D/3D device structures, define physical models (transport, recombination, traps, mobility, quantum effects, etc.), and perform parametric studies to support device and process development. Correlate TCAD simulation results with electrical characterization data to clarify physical mechanisms behind performance, variability, and reliability trends. Investigate impacts of process variations, material properties, defects, and interface states on device characteristics. Support development teams

We’re building a world of health around every individual — shaping a more connected, convenient and compassionate health experience. At CVS Health®, you’ll be surrounded by passionate colleagues who care deeply, innovate with purpose, hold ourselves accountable and prioritize safety and quality in everything we do. Join us and be part of something bigger – helping to simplify health care one person, one family and one community at a time. Position Summary CVS Health is seeking a Principal Software Engineer to lead the design and delivery of enterprise-scale Generative AI solutions that power next-generation healthcare experiences. This role goes beyond hands-on coding—you will define technical strategy, establish architectural standards, and guide multiple teams in building secure, scalable, and cost-effective AI platforms across AWS (Bedrock) and Google Cloud (Vertex AI API). You will partner with product, security, compliance, and enterprise architecture teams to ensure solutions meet business objectives, regulatory requirements, and performance goals. The ideal candidate combines deep technical expertise with leadership skills—capable of influencing cross-org architecture decisions, mentoring engineering teams, and driving responsible AI practices in production. Key Responsibilities Lead end-to-end platform delivery of highly scalable, secure AI services and applications leveraging AWS Bedrock (Foundation Models, Knowledge Bases, Agents, Guardrails) and Google Cloud Vertex AI (Gemini via Vertex AI API, Agent Builder, Vector Search, Search & Grounding) Architect and implement Retrieval-Augmented Generation (RAG) solutions, integrating proprietary data from sources like Amazon S3 and Google Cloud Storage/BigQuery, and using Bedrock Knowledge Bases and/or Vertex AI Search & Groundi

We're looking for a Principal Engineer to join our CSP Engagements team as the technical focal point for end-to-end performance, working directly with engineering teams of key CSP/hyperscale customers to ensure they achieve various performance targets on NVIDIA platforms. In this role, you will augment NVIDIA's performance and benchmark teams with a dedicated CSP-facing focus. You will drive work streams with CSP engineering teams to build shared understanding of platform performance characteristics, gather and incorporate their workload-specific feedback into NVIDIA's optimization priorities, and validate that performance targets are met in customer-representative configurations. Your cross-CSP visibility enables you to identify patterns and drive systemic improvements in documentation, configuration guidance, and tooling. What you'll be doing: Drive performance characterization work streams with engineering teams of key CSP/hyperscale customers — ensuring they understand platform performance expectations, profiling methodology, and tuning options for their specific workloads Gather and synthesize CSP performance feedback — identify gaps between expected and actual throughput, and champion optimization priorities back into NVIDIA's CUDA, NCCL, driver, and firmware teams Ensure key open-source performance and stress tools (e.g., STREAM, GPU Burn, GPU BLAST) are updated and validated for the latest NVIDIA rack-scale systems, GPU architectures, and CPU platforms — so customers and internal teams have reliable baseline measurements from day one Work closely with CSPs to ensure their own performance and validation tooling reflects the latest GPU capabilities, memory hierarchy changes, and platform-specific tuning parameters Conduct cross-CSP performance comparison and pattern analysis — identify configuration, software, or workload differences that explai

We’re building a world of health around every individual — shaping a more connected, convenient and compassionate health experience. At CVS Health®, you’ll be surrounded by passionate colleagues who care deeply, innovate with purpose, hold ourselves accountable and prioritize safety and quality in everything we do. Join us and be part of something bigger – helping to simplify health care one person, one family and one community at a time. Position Summary We are seeking a highly experienced Principal / Director-level Full-Stack Software Development Engineer to join our Digital Caremark organization and lead the architecture, design, and delivery of next-generation digital solutions. This role spans AI-enabled applications, scalable digital platforms, and enterprise integrations that power critical healthcare and pharmacy experiences. This is a senior technical leadership role for a hands-on engineer who can operate across the full stack—from intuitive front-end applications to resilient backend services—while setting architectural direction, influencing engineering standards, and mentoring teams. The ideal candidate combines deep technical expertise, platform thinking, and strong collaboration skills to build secure, scalable, API-first solutions in a highly regulated environment. Key Responsibilities: Architecture & System Design • Define and drive architecture for large-scale distributed systems and digital platforms • Lead design reviews and set architecture standards and best practices • Champion API-first, microservices, and event-driven architecture patterns • Ensure systems meet scalability, reliability, security, and compliance requirements • Balance performance, cost, and speed in technical decision-making Fu

Our vision is to transform how the world uses information to enrich life for all . Micron Technology is a world leader in innovating memory and storage solutions that accelerate the transformation of information into intelligence, inspiring the world to learn, communicate and advance faster than ever. We are a team that thrives on uncovering the unseen. Using advanced inspection technologies, data analytics, and innovative defect detection methodologies, we protect the health of our manufacturing lines and enable world-class yield performance. We collaborate across global sites to share knowledge, develop best known methods, and accelerate learning through data-driven decision making. If you enjoy solving complex manufacturing challenges and influencing improvement at scale, we invite you to join us. As a Principal Realtime Defect Analysis (RDA) HVM Process Engineer, you will serve as a technical leader responsible for driving defect reduction strategies across high-volume manufacturing. You will influence inspection roadmaps, develop innovative approaches for defect detection and excursion prevention, and partner with global stakeholders to improve process capability and manufacturing performance. Your expertise will help shape RDA strategy, accelerate technology transfer, and enable proactive identification of critical process issues before they impact production. Responsibilities: Lead defect reduction initiatives through analysis of inline defect signals, process flows, and equipment performance across manufacturing sites Develop and implement advanced inspection strategies, methodologies, and controls to improve defect visibility and prevent process excursions Drive root cause investigations for complex defect and yield challenges while influencing corrective actions across cross

Our vision is to transform how the world uses information to enrich life for all. Join an inclusive team passionate about one thing: using their expertise in the relentless pursuit of innovation for customers and partners. The solutions we build help make everything from virtual reality experiences to breakthroughs in neural networks possible. We do it all while committing to integrity, sustainability, and giving back to our communities. Because doing so can fuel the very innovation we are pursuing. As a key leader within High Bandwidth Memory (HBM) Product Engineering Media Health team, you will spearhead and develop a high performing team driving Media Health Manufacturing and activities for Micron’s latest HBM products, both on DRAM and Interface die and a stacked product. You will lead a portfolio of Best-In-Class Next Generation HBM Product focused on the critical KPI’s Quality, Cost, Cycle Time and Scale. This include lead the manufacturing test flow development and validation, improve the device/stacked yield with most optimized extrinsic and intrinsic reliability through in depth circuit debug, test coverage optimization and strategy innovation, test time improvement for manufacturing flow and drive the DFT (design for test) strategy to stage new ideas to improve cost, cycle time and quality. You will also collaborate with cross functional team (Fab, Product Leads, Design, Technology Development, Design, Test Solution Engineering etc) with diverse expertise to achieve both strategic and tactical objectives and stay ahead on technology and product leadership. The future of HBM are exciting and dynamics. Micron is seeking experienced individuals that find technical challenges engaging and invigorating. Responsibilities: Optimized Test Coverage: <span