Principal Scientist Jobs

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 Creator Content Platform Team provides a secure, scalable, and extensible foundation for ingestion, processing, storing, managing, and serving user content. As a Principal Software Engineer (Backend, Distributed Systems), you will design and build backend services to help game creators reach the broadest audience possible. You will help us build & scale large distributed systems, data processing and analysis pipelines, an access control system, Open Cloud APIs all of which are central for all content created in Roblox. \ You Will: Solve on a variety of unique technical challenges Have the independence, opportunity and the end-to-end responsibility to design, build, test and deploy services within the Roblox ecosystem Guide the future technical direction of the team and have impact on engineering Be a technical bar-raiser for high code quality, architectural designs, and long-term approaches Mentor and develop fellow engineers on the team Design systems and services that are scalable and resilient Collaborate with passionate, Engineers, Product Managers and other Roblox team members, cross-functionally You have: Experience: You have 13+ years of experience working on backend, d

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. As a Principal Engineer in the Builder Tools team, you’ll work on interactive, developer-facing tools and reusable tooling frameworks for Roblox Studio, a collaborative IDE for making Roblox games. The Builder Tools team is in charge of Roblox Studio’s content making features, from 3D draggers to world-class character animation tools, tooling for making terrain for huge worlds, in-game UI authoring tools, and many more. In this role, you will have a direct impact on how streamlined and enjoyable making games on Roblox is for hundreds of thousands developers worldwide! You will: Work on various interactive tools for Roblox game developers Define architecture and implement reusable tooling frameworks Work with UX designers and Product Manager to come up with most optimal and ergonomic solutions Design and execute on the architecture and technical direction that will be the future of our application Own and deliver complex technical projects from the planning stage through execution Work cross functionally, across teams and technology platforms Mentor team members helping them improve their professional skills and expertise Design, develop, and implement technological p

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. Role Summary The Principal Engineer provides technical leadership for Cell Film process development, defining technical direction, fostering innovation, and ensuring successful integration of new processes into manufacturing to enable next-generation NAND device scaling. Defines and implements technical strategy; leads cross-functional teams; owns end-to-end module development with manufacturability/scalability readiness. Resolves complex technical challenges with business impact and drives transfer and ramp readiness into high-volume manufacturing . Main Responsibilities Strategy, Roadmap & Technical Direction Define and implement technical strategy for cell film process development aligned to business and technology objectives . Identify emerging trends/risks/opportunities and recommend future investments/initiatives .

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. Job / Role Summary The Principal Engineer provides technical leadership for dry etch process development across critical NAND modules, shaping process roadmaps for current and future nodes and leading cross-functional execution to solve high-impact structural and device challenges. Success requires deep domain expertise in plasma etch, proven leadership in complex program delivery, and strong vendor engagement to close technology gaps. Main Responsibilities Lead dry etch unit process and critical module development; develop/innovate processes that meet advanced NAND structural and electrical specifications. Lead cross-functional teams to solve complex structural problems and drive alignment across process areas. <spa

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. Job / Role Summary The Principal Engineer provides technical leadership for NAND Advanced Thin Films, defining technical direction and driving the strategic advancement and integration of sophisticated structural and electrical film processes into manufacturing. Success requires proven leadership in thin film module development, strong cross-functional influence, deep characterization and correlation capability, and strong judgment in technical tradeoffs for manufacturability, scaling, yield, and reliability. Main Responsibilities Define and implement technical strategy for structural and electrical film process development aligned to business and technology objectives . Lead multi-functional teams to develop, integrate, and scale thin film processes for advanced NAND structures/devices. Oversee end-to-end development of process modules with

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. Role Summary The Principal Engineer provides technical leadership in wet process development, leading project ‑ level initiatives, guiding integration and transfer readiness, and establishing wet process roadmaps aligned to future NAND scaling requirements. Leads complex experiments and cross ‑ functional execution, delivering measurable results at department/site scope. Provides mentorship aligned to technical leadership expectations and strengthens documentation / SOP governance. Main Responsibilities Process Development & Margin Improvement Lead project ‑ level initiatives focused on wet process development for NAND memory technology. <u

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. Company Overview We are building the next generation of cloud security infrastructure, focusing on advanced Data Exfiltration Protection (DXP) and unified Data Movement Policies (DMP). Our mission is to provide seamless, context-aware security that protects sensitive data without hindering developer velocity. We are looking for a visionary Principal Engineer to lead the technical strategy and architecture for our Data Movement and Perimeter control systems. Role Summary As a Principal Engineer in the Data Protection group, you will be the technical lead for the Data Exfiltration Protection (DXP) and Data Movement Policy (DMP) initiatives. You will bridge the gap between high-level security policy and low-level system enforcement, ensuring that our perimeter controls are robust, scalable, and deeply integrated with context-aware access policy frameworks. You will be responsible for the architectural evolution of our egress control systems, moving from simple IP-based rules to sophisticated, content-aware, and identity-driven data movement governance. AS A PRINCIPAL SOFTWARE ENGINEER - IDENTITY, DATA SECURITY AND TRUST AT SNOWFLAKE YOU WILL: Architectural Leadership: Lead the design and implementation of the Data Movement Policy (DMP) framework, ensuring it can handle complex

Everpure (NYSE: P) has evolved from storage pioneer to data platform, closing fiscal 2026 with $3.7 billion in revenue, its first billion-dollar quarter, and accelerating growth into FY27. Our strategic agenda spans the companies defining the next era of technology - hyperscalers, AI labs, the AI hardware supply chain, data platform providers, and the broader AI ecosystem. This type of work—work that changes the world—is what the tech industry was founded on. So, if you're ready to seize the endless opportunities and leave your mark, come join us. THE ROLE Pure Storage is seeking a full-time Principal Hardware Engineer working as part of our Hardware Development Team. In this position, you'll be working to define the technical direction of our next-generation hardware platforms. You’ll work closely with Architects, Engineering, Operations, OEM/JDM Partners and Support & Escalation Teams. You'll be responsible for the future of Pure’s high performance storage systems, acting as the primary subject matter expert for system hardware across executive, product, and client interactions.. WHAT YOU'LL DO Define system-level hardware architecture for FlashBlade, including compute, memory, interconnect, storage, power, and thermal design. Translate product requirements and customer needs into clear technical specifications and design trade-offs. Evaluate and select key components, technologies, and vendors, and lead make-vs-buy decisions. Drive architecture reviews and design reviews, and ensure designs meet performance, reliability, and compliance targets. Partner with firmware and software teams to define hardware/software interfaces and optimize the full stack Track emerging technologies and industry standards, and shape the long-term hardware roadmap. Work with manufacturing and supply chain on DFM/DFT, yield, cost reduction, and component risk. Strong understanding of X86 architecture and proven design track record Solid understanding of Major Bus

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate with speed and urgency and execute with excellence. This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. We are looking for an experienced Principal Software Engineer to work on our next-generation Imports Platform team. Imports Platform team is leading a strategic initiative to modernize Okta's identity lifecycle management capabilities by architecting and migrating from a legacy monolithic system to a highly scalable, distributed microservices platform. This critical service orchestrates the importing, syncing, and provisioning of identities and access policies—users, groups, roles, entitlements—from external directory services including Active Directory, Office 365, and LDAP-based systems. As a Principal Software Engineer on the Imports Platform team, you will be a cross-team technical leader who takes difficult, ambiguously defined problems and drives them from ideation through production impact without oversight. You will own projects from zero to landing—defining scope, planning execution, making architectural decisions, and articulating measurable impact across the group. You will generate novel solutions to complex distributed systems challenges, guide the team's technical direction, and get stakeholder buy-in on architectural strategy spanning multiple teams. Your sphere of influence extends beyond the Imports Platform team to adjacent teams within the group and cross-functional partners in Product, Design, and SRE. You will participate in group-level strategy, break down strategic initiatives into actionable technical milestones, and drive cross-team

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. Key Responsibilities Construction Management & Execution Lead the construction phase of multiple electrical projects, overseeing installation, integration, and commissioning of electrical systems. Develop and manage construction schedules, budgets, and resource plans for electrical works. Coordinate with general contractors, subcontractors, and suppliers to ensure timely procurement and installation of electrical components. Conduct regular site inspections, monitor progress, and resolve construction issues to maintain quality and safety standards. Review and approve electrical submittals, shop drawings, and contractor work plans. Ensure all construction activities comply with relevant international electrical codes (such as NEC, IEEE), Singapore local codes and regulations for electrical design and construction (e.g., SS 638:2018 – Code of Practice for Electrical Installations), applicable safety standards (NFPA, OSHA, MOM), and environmental regulations. Commissioning & Handover Lead and supervise the testing and commissioning of electrical systems, including power distribution, lighting, emergency power, and control systems. Oversee functional testing, troubleshooting, and adj

Who Are We? Postman is the world’s leading API platform, used by more than 45 million+ developers and 500,000 organizations, including 98% of the Fortune 500. Postman is helping developers and professionals across the globe build the API-first world by simplifying each step of the API lifecycle and streamlining collaboration—enabling users to create better APIs, faster. The company is headquartered in San Francisco and has offices in Boston, New York, Austin, Tokyo, London, and Bangalore - where Postman was founded. Postman is privately held, with funding from Battery Ventures, BOND, Coatue, CRV, Insight Partners, and Nexus Venture Partners. Learn more at postman.com or connect with Postman on X via @getpostman. P.S: We highly recommend reading The "API-First World" graphic novel to understand the bigger picture and our vision at Postman. About the Team The Information Security organization at Postman operates across three pillars: Governance Risk & Compliance (GRC), Product Security, and Security Operations. We are a team of builders, not checkbox-checkers. We hold active SOC 2 Type II, ISO 27001, ISO 42001, and HIPAA compliance postures, and we are pursuing FedRAMP High and CMMC Level 2 authorization. Our security stack includes Wiz, SentinelOne, Okta, Jamf, and 1Password, and we operate across a multi-cloud environment. The Offensive Security team is the "red" pulse of this organization. We don't just find bugs — we simulate the adversary to ensure our defenses hold up under real-world pressure. We focus on continuous security validation, AI-augmented adversary emulation, and offensive AI security research at Postman's scale. The Opportunity We are looking for a Principal Offensive Security Engineer who is as much a strategist as they are a hacker. You will own the strategic direction of Postman's offensive security program — including building out a dedicated Offensive AI Security capability from the ground up — and operat

For over 20 years, Smartsheet has empowered teams to manage work seamlessly and scale solutions smarter. Now, in our most ambitious chapter yet, we are uniting human teams with AI agents. By orchestrating the work agents do best, automating manual tasks and uncovering insights at scale, we create the space for people to focus on what truly matters: judgment, creativity, and big thinking. That is magic at work, and it’s what we show up for every day. Smartsheet is seeking a Principal Partner Marketing Manager to lead and scale co-marketing programs across our ecosystem of strategic technology and channel partners. This role influences and executes partner marketing strategy, program design, and budget. You will own the end-to-end marketing relationship with a portfolio of high-priority partners — designing and executing programs that accelerate pipeline at every stage of the buyer journey. You will operate as a trusted advisor and key connector between Field Marketing, Partner Sales, Demand Gen, and Product Marketing This role reports to the Director, Partner Marketing and can be based in our Bellevue, WA office or remotely from anywhere in the US where Smartsheet is a registered employer. You Will: Partner Marketing Strategy & Program Design Own the co-marketing strategy and execution roadmap for a portfolio of strategic technology and channel partners, ensuring alignment to Smartsheet's FY27 Field Marketing transformation priorities and demand generation framework. Design and govern integrated partner marketing programs across multiple channels including events, digital, content syndication, demand generation with clear pipeline and ROI objectives. Establish scalable operating models, playbooks, and execution frameworks for partner marketing that can be adopted across the function. Develop and manage the partner marketing events strategy, including third-party event sponsorships, partner-led field events, and co-branded virtual programs. Pipeline Accountability

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. 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 Security Firmware Engineer at Micron Technology Inc., you will be providing the technical capability in the creation and integration of Security Firmware IP for use in SSD products. The lifecycle of this responsibility is associated with the organization's product development life cycle and can range from product inception to obsolescence or any portion that is defined by specific assignments. You will also be responsible for providing technical support to implement the development and quality assurance processes necessary to insure the firmware IP consistently provides the required functionality, security, usability, quality/reliability, performance, and ensure Micron SSDs meet their design targets. Responsibilities : DEVELOP AND TEST FIRMWARE SSD products: Develop Security firmware IP subsystems for SSD products that meet or exceed the requirements of the technical spec matrix; including, but not limited to: Security, Performance, Functionality,

At Linear, we're building the product development system for teams and agents. AI is fundamentally changing how software gets built, and we’re shaping the tools this new era requires. Founded in 2019, Linear has become the platform of choice for more than 40,000 companies (including OpenAI, Coinbase, and Ramp) to plan, build, and ship their products. Today, our team is distributed across North America, Europe, and Australia, and we’re continuing to grow internationally. What unites us is relentless focus, fast execution, and a deep care for software craftsmanship. Quality is our competitive advantage. Every member of our fully remote team is a maker at heart, caring deeply about the quality and feel of our work. While the industry optimizes for speed and metrics alone, we believe that craft and quality have lasting value. Quality creates gravity — it pulls people toward our team and product rather than requiring us to push. This philosophy drives everything we do, from product decisions to hiring choices. For this role, we expect robust design skills, sharp product thinking, and the ability to engage in technical discussions. We work in small, autonomous project teams, where engineers are paired tightly with designers to explore ideas, build prototypes, deploy internal builds, and ultimately ship to customers. You will be a key element of projects from beginning to end. Location & work mode Linear is a remote-first company, with optional co-working offices in San Francisco, New York, and London. This role is open to candidates based in North America and Europe. You can work from anywhere within this region. We value deep focus and async collaboration, with intentional moments to connect in person through team off-sites, optional co-working, and occasional travel. What you'll do Pair closely with engineering and product to initiate and complete roadmap projects, no hand-offs Spot opportunities to redesign or refine key screens and flows, as well as smaller qualit

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. Job Description: Zscaler is seeking a passionate Healthcare Industry Principal Sales Engineer (PSE) to serve as a top-level technical authority and senior individual contributor. Lead the charge in healthcare innovation. As a strategic veteran, you will drive complex technical sales scenarios where Zero Trust architecture becomes the bedrock of clinical resilience. Your expertise will demonstrate how Zscaler doesn’t just secure data—it empowers providers to deliver innovation resulting in better care, faster and more securely. This role acts as a critical intersection and bridge between our customers, partners, sales teams, sales engineers, and product management - providing the deep technical expertise and strategic influence required to secure a cloud-enabled digital future. Key Responsibilities Opportunity Acceleration: Lead high-impact sales engagements and complex Proof of Values (POV) from inception to completio