Principal Scientist Jobs

Zscaler (NASDAQ: ZS) accelerates digital transformation so customers can be more agile, efficient, resilient, and secure. The Zscaler Zero Trust Exchange platform protects thousands of customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Distributed across 200+ public data centers globally and thousands of private sites at the edge, the SASE-based Zero Trust Exchange is the world’s largest in-line cloud security platform. We believe the future of work is Human + AI and are building an AI-native enterprise where human potential is amplified by machine intelligence to solve the world’s hardest security challenges. Driven by deep customer obsession, we are committed to the mission, outcome, and to each other. We bring these commitments to life through three core behaviors: ownership and collaboration, trust through outcomes and impact, and a challenge culture with ongoing feedback. Ready to make an impact at the company pioneering security transformation in the AI era? Join us at Zscaler. Role We are looking for a Principal Product Manager – Zscaler Logging and Analytics Platform to join our team. This is a Hybrid (3 days a week, Santa Clara or Bellevue office) role, reporting to the Senior Director of Product Management, Platform Infrastructure in the Product Management department. This is an opportunity to own and scale the massive big data logging infrastructure powering the Zscaler Zero Trust Exchange (including ZIA and ZPA) alongside 1st and 3rd-party integrations. This person will drive extreme scale processing over 800B transactions daily, cutting-edge cloud architecture, supporting the world’s largest security cloud, and next-gen AI-driven security operations (AgenticOps). What you’ll do (Role Expectations) Scale Big Data Infrastructure: Lead and execute the roadmap for our platform, reliability and scalability, and customer-facing logging capabilities, supporting capacity and nex

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. At Toast, Talent Acquisition runs on its tools. Greenhouse, GoodTime, and BrightHire are where every requisition, interview, and hiring decision actually happens — and no single person owns them end-to-end today. That is this role. As a Principal TA Systems Architect, you will be the technical owner of the TA tech stack: the person who configures it, integrates it, secures it, measures it, and decides where it goes next. You will partner closely with the TA Operations who live in these systems every day, with the broader People Systems and People Analytics teams who own the HRIS and downstream data, and with IT, Security, Legal, and Procurement on access, privacy, and purchasing. You will own the vendor relationships — roadmap conversations, renewals, escalations — and hold our partners to a standard. This is an individual contributor role today with a clear path to building and leading a small team as the function scales. If you want to own a domain, be the deepest expert in the building on it, and eventually hire people to extend it, this is that job. A day in the life (Responsibilities) Own the stack: Serve as system owner and top-tier administrator for Greenhouse, GoodTime, and BrightHire — configuration, permissions, workflows, approval chains, compliance settings, and release management. Own the integration layer between TA systems and the rest of the People stack: HRIS, background check, assessments, sourcing, and offer tooling, including API-based integrations and middleware. Run intake-to-resolution on system issues: triage, root-cause, fix, and close the loop with whoever reported it. Hold the change management discipline the stack needs — sandbox testing, documented configuration decisions, release notes, and user communications. Partner across the People org

At Snowflake, we are powering the era of the agentic enterprise. To usher in this new era, we seek AI-native thinkers across every function who are energized by the opportunity to reinvent how they work. You don’t just use tools; you possess an innate curiosity, treating AI as a high-trust collaborator that is core to how you solve problems and accelerate your impact. We look for low-ego individuals who thrive in dynamic and fast-moving environments and move with an experimental mindset — who rapidly test emerging capabilities to discover simpler, more powerful ways to deliver results. At Snowflake, your role isn't just to execute a function, but to help redefine the future of how work gets done. Principal Software Engineer 2 - OLTP Snowflake is building the next generation of transactional systems for applications, AI and agents. Across Snowflake Postgres and Unistore, we are combining the performance, reliability and developer experience expected from modern operational databases with Snowflake's cloud-native architecture and governed data platform. We're looking for a Principal Engineer 2 to help define and drive the architecture across database internals, storage, compute and cloud infrastructure. A core part of the role is designing transactional systems for agent-driven workloads, where isolated state, rapid database lifecycle, safe autonomous operations, and deep integration with enterprise data are first-class requirements. What You'll Do Define and drive the long-term technical architecture for OLTP across Snowflake Postgres, Unistore and the infrastructure they depend on. Lead major architectural decisions across transactions, storage, concurrency control, replication, recovery, query execution and database scalability. Shape the compute and storage architecture for low-latency, highly available transactional systems, including resource isolation, elasticity, networking, caching and container infrastructure. Build database primitives for agent-driven workl

Position Overview Solution Engineers (SEs) at SingleStore are solving some of the most cutting-edge technical challenges in today’s data-driven world. When customers evaluate SingleStore, SEs are their trusted technical experts who evaluate, identify, and demonstrate how SingleStore can solve their mission-critical business needs. As key contributors to our sales organization, Solution Engineers add tremendous value to the customer journey and directly impact company growth and revenue. In this role, you will be responsible for identifying the technical requirements necessary to deliver business value for our Fortune 1,000 customers. Working in partnership with Enterprise Account Executives, you will help to acquire new customers and expand existing accounts. You will do this by leveraging your technical skill set and business acumen to understand complex solutions and create high-quality demos that resonate with our customers. Role and Responsibilities Partner with Prospects and Customers to understand their industries and strategies, and educate them on SingleStores strategy, technologies and vision. Partner with Account Executives to close new business (logos) and expand existing accounts Partner with internal teams (Product, Engineering, Support, Marketing etc.) to share feedback on customer needs and requests Design, develop, and deploy Proofs of Concept (POCs) with prospective customers Drive the technical evaluation stage of the sales cycle, acting as the technical lead/subject matter expert (query tuning, load testing, etc.) Work to develop Channels and Partners for co-selling in the region. Required Skills and Experience Fluency in English and regional languages Experience with Gen AI, ML and Advanced Analytics Experience successfully selling enterprise database technologies, distributed systems, and similar products Deep understanding of distributed databa

About Graphcore At Graphcore, we’re building the future of AI compute.We’re a team of semiconductor, software and AI experts, with deep experience in creating the complete AI compute stack - from silicon and software to infrastructure at datacenter scale.As part of the SoftBank Group, backed by significant long-term investment, we are delivering key technology into the fast-growing SoftBank AI ecosystem.To meet the vast and exciting AI opportunity, Graphcore is expanding its teams around the world.We are bringing together the brightest minds to solve the toughest problems, in a place where everyone has the opportunity to make an impact on the company, our products and the future of artificial intelligence. Job Summary We are looking for an experienced Silicon Test Engineer to join our Product Test and Diagnosis Department (PTD). This is a pivotal role and will involve building a team of engineers to develop System Level Test (SLT) capability within the company. Working closely with a cross-functional team you will implement SLT tests for a family of next generation AI Processors. The ideal candidate should have a focus on quality and demonstrate a good understanding of the importance of production test on the success of a product. T hey will have a proven Functional Test or ATE Test Engineering background, and will have a pragmatic, hands-on and flexible approach to a fast-changing environment. The Team The Product Test and Diagnostics team’s role is to detect and manage hardware defects that arise from the manufacture and use of our products. This covers chips, boards and finished systems and takes place both in the manufacturing sites and in the field. Responsibilities and Duties Managing a team of

About the Role We are looking for a Principal Software Engineer to shape how our AWS-based SaaS products are built, deployed, and operated. This is a hands-on technical leadership role for an engineer with prior software development experience and deep expertise in AWS, infrastructure as code, CI/CD, automation, and observability. You will partner with application, platform, product, and security teams to improve the full software delivery lifecycle. You will modernize existing applications by reducing unnecessary coupling and enabling components to be built, tested, released, and deployed independently where the architecture supports it. You will also set technical direction across teams, lead complex modernization initiatives, and mentor engineers in the Bangalore organization. What You Will Do DevOps Strategy and Technical Leadership Define DevOps and platform engineering standards, reference architectures, delivery patterns, and operational practices. Lead cross-team initiatives that improve delivery speed, reliability, security, and maintainability. Make and communicate technical decisions that balance modernization, customer impact, and service continuity. Mentor engineers, lead knowledge-sharing sessions, and contribute to hiring and technical interviews. Application Modernization and Software Engineering Apply software development experience to understand application architecture, dependencies, build systems, runtime behavior, and operational risks. Assess existing applications and reduce tight coupling between components, services, shared libraries, and deployment units where practical. Enable components to be built, tested, versioned, and deployed independently Improve configuration, secrets handling, health checks, logging, metrics, and graceful startup and shutdown behavior. Build automation and engineering tools using a programming or scripting language such as Python, Go, Groovy, or shell. CI/CD and Developer Experience Design, implement, and ope

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. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. 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. The Engine Networking Team pulls the players together by ensuring the communication of the game state to all. As a Principal Network Transport Engineer you will help the players experience the game as a nearly synchronous world. Just as the nerves in our bodies coordinate our actions, the network system coordinates all the computers involved into a smooth experience for the players. You will work in all areas of the game platform in your quest for real-time communication of every part of Roblox. You Have: Worked on a powerful user-space network stack, solving problems related to scale, performance, latency, and throughput in client/server environments. Worked on a very large multithreaded distributed system that connects millions of users worldwide. Worked on all the devices Roblox supports - from desktop clients to mobile phone clients to console clients Worked on a game engine and understand how a game engine works You Are: A software engineer with 10+ years of experience with Game networking coming from a Game Engine/Studio A deep understanding of Network Stack with a passion for working with open source Strong systems-level C++ programming experience and fascinated by the ac

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. Within the larger SI R&D group, as a Principal Signal Integrity Engineer at Micron, you will be responsible for: Leading the development and analysis of high speed (HS or similar expertise) memory interfaces and power distribution networks (PDN) . Applying AI/ML and data-driven techniques to accelerate Signal Integrity / Power Integrity analysis, build optimization , and engineering decision-making. Applying automation, scripting, and AI-assisted engineering workflows to improve simulation efficiency and coverage. Representing the Signal Integrity R&D team in technical cross-functional collaborative groups , integrating with package build, silicon develop, system invent, product engineering, and marketing departments to ensure overall product performance. Driving and developing SI/PI aspects of future standards (including but not limited to JEDEC, ONFI, and IBIS) through system and product electrical capability exploration. Supporting external customers as needed. Formulating techniques and protocols for SI/PI analysis. Supporting and driving path-finding activities for IO and channel innovation to enable the next generation of memory technologies at higher speeds and densities. Minimum Qualifications PhD or MSEE, or equivalent experience, with at least 5 years of industry experience. Deep experience in Signal and Power Integrity, particularly in areas affecting I/O circui

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 driving the future of semiconductor design and innovation through advanced CAD, EDA, and AI-enabled engineering solutions. Our team works on technologies that help accelerate the development of next-generation memory and storage products used around the world. If you enjoy solving complex technical challenges, collaborating across engineering disciplines, and shaping the tools that enable breakthrough products, you'll find meaningful work here. As a CAD Engineer, you will play a key role in developing, improving, and supporting design automation tools and workflows used across integrated circuit design, physical implementation, and verification. You'll work closely with design, process, and software engineering teams to enhance productivity, introduce new technologies, and help drive the adoption of AI and machine learning within engineering workflows. Responsibilities: Lead the development, evaluation, and enhancement of CAD and EDA tools, flows, and methodologies Drive large-scale technical projects and provide expertise within CAD, design automation, and verification domains Guide AI and machine learning integration across CAD workflows and engineering applications Collaborate with design and process engineering teams to improve design efficiency and tool effectiveness Deliver training, documentation, and technical support for new tools, processes, and methodologies Minimum Qualifications: Bachelor's degree in Computer Engineering

We anticipate the application window for this opening will close on - 6 Oct 2026 Careers that change lives start here. Medtronic is a global leader in healthcare technology with a Mission to alleviate pain, restore health, and extend life. Our 95,000 employees work across more than 150 countries to put patients first — developing innovative medical technologies that improve the lives of 72+ million patients each year. Your unique talents will help shape the future of healthcare while building a career grounded in purpose, growth, and impact. A Day in the Life At Medtronic, we bring bold ideas forward with speed and decisiveness to put patients first in everything we do. In-person exchanges are invaluable to our work. We’re working onsite 5 days a week as part of our commitment to fostering a culture of professional growth and cross-functional collaboration as we work together to engineer the extraordinary. This Principal Process Development Engineer will be responsible for the development of laser based processes through release to manufacturing. The Engineer will lead process development and process improvement projects in laser joining and laser cutting of metal and glass materials. Process development work scope may span across multiple process areas with a primary focus in laser equipment. They will coordinate risk burn down and problem-solving experiments by utilizing DRM/DFSS (Design and Reliability for Manufacturing / Design For Six Sigma) and data driven methods. They will also be responsible for managing the validation activities for the development work including requirements flow down, effective control and monitoring strategies and ensuring compliance to regulations and safety for our patients. Responsibilities may include the following and other duties may be assigned.

Principal Automation Software Test Engineer: SDET — Lafayette, Colorado, United States of America. Apply via Workday.

About Us SharkNinja is a global product design and technology company, with a diversified portfolio of 5-star rated lifestyle solutions that positively impact people’s lives in homes around the world. Powered by two trusted, global brands, Shark and Ninja , the company has a proven track record of bringing disruptive innovation to market and developing one consumer product after another has allowed SharkNinja to enter multiple product categories, driving significant growth and market share gains. Headquartered in Needham, Massachusetts with more than 4,100 associates, the company’s products are sold at key retailers, online and offline, and through distributors around the world. AI at SharkNinja At SharkNinja, we’re building an AI-native culture. We’re not waiting for the future; we’re creating it. Our people are expected to experiment boldly, adopt new tools, and continuously raise what’s possible to create meaningful impact for our consumers. If you believe the best way to do your job hasn’t been invented yet, you’ll fit right in. The Principal Connected Firmware Engineer is the senior individual technical contributor in SharkNinja's Connected Firmware organization — the deepest hands-on expert in wireless connectivity, display/UI, and device-to-app-to-cloud integration. This role sets technical direction on the hardest connected-architecture problems in the portfolio and holds the technical standard that internal developers and external partners build against. The Principal Engineer designs the connected-platform interfaces and standards, then writes the reference implementations — connectivity stacks, provisioning and pairing code, display/UI frameworks, and app/cloud integration layers — that prove the architecture out in working code before any partner builds against it. That combination is what gives this role its leverage: not just interface contracts and design reviews, but hands-on implementa

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. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. 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. The Consumer App Performance team is looking for a Principal Software Engineer to spearhead stability and performance improvements. You will work across system-level, cross-platform C++ game engine, and front-end codebase, partnering with teams across the company to identify bad behavior patterns and performance bottlenecks, ship measurable improvements, and prevent regressions over time. Our team owns the end-to-end performance of Roblox, from speed and responsiveness to efficiency and stability, across all devices and platforms we support: mobile, desktop, and console. You will: Drive research of new opportunities, build and execute roadmaps to improve stability and resilience of Roblox across all target platforms Design novel solutions to prevent and mitigate crashes, hangs, and other interruptions that hurt user experience. Build robust defense mechanisms for early detection of stability anomalies through real-time monitoring, alerting, and CI/CD automation. Work with stakeholders across Engineering, Product, and Design to align on priorities, tradeoffs, and rollout plans; ensure performance improvements support the user experience. Deliver improvements and guardrails that scale a

Our MDM team is seeking an experienced Principal Full-Stack engineer, to join an established engineering team. You will work on our D&B Connect application, a strategic self-service Master Data Management (MDM) platform that enables customers to cleanse, match, enrich, monitor, and manage their first-party data using D&B's Commercial Graph and D-U-N-S®-anchored data assets. This serves as our primary MDM customer-facing platform, accessed via web UI plus CRM, Marketing and Cloud Data Warehouse integrations with planned support for AI-driven headless access through MCP tools. The Principal Engineer (Full Stack) is responsible for working across the full stack, building highly scalable distributed solutions that enable positive user experiences and measurable business growth. This role needs to complete the assigned projects with end-to-end ownership. Team Overview Design and evolve enterprise-grade Master Data Management (MDM) platforms powering core business entities (e.g., customers, suppliers, leads, reference data) Address challenges in data quality , identity resolution , integration , and governance at scale Build highly available, resilient systems that support both real-time and batch workloads across global regions Collaborate with product, data, and platform teams to transform business needs into scalable technical solutions Key Responsibilities Work across the full stack, building highly scalable distributed solutions that enable positive user experiences and measurable business growth Partner with development and product teams to ensure product quality in a fast-paced Agile environment Partner with SRE team to deploy and manage data infrastructure on cloud platforms such as GCP or AWS<

ABOUT THE BRAND: Callaway Golf Company is a premium golf equipment, gear and apparel company with a portfolio of global brands, including Callaway Golf, Odyssey, TravisMathew, and OGIO. Through an unwavering commitment to innovation and premium craftsmanship, Callaway designs, manufactures, and sells high-performance golf clubs, golf balls, apparel, bags, and other accessories—setting the standard for performance in the game of golf. Our Mission: To create demonstrably superior and pleasingly different products powered by innovative technology and premium craftsmanship enabling golfers of all abilities to play their best and find more joy in the game. Our company is a blend of experience and diverse backgrounds, and together we look to leave the past behind while moving the game forward. For more information, please visit https://www.callawaygolf.com ROLES AND RESPONSIBILITIES Lead the design, configuration, implementation, and support of the SAP Analytics Cloud (SAC) Application for developing and supporting the planning and analytics functions. Lead the implementation and support of SAP’s Business Intelligence solutions. Lead all phases of the project life cycle including analysis, design, development, testing, deployment, and post-production support/maintenance. <l