Principle Human Factors Engineer Jobs

Our mission and customers: We are creating the freedom for SMEs to succeed by delivering Europe's leading finance workspace with banking at its core, augmented by financial tools. We are proud to be rated 4.8 on Trustpilot, based on 55,000+ reviews. Our culture puts customer satisfaction at the core of what we do, as proven by our Net Promoter Score of 75 (more about our culture here). Our journey: Founded in 2017 by Alexandre and Steve, Qonto has grown to 1,600+ Qontoers serving over 600,000+ customers across 8 European countries. We have been profitable since 2023, and we are just getting started. Our beliefs: We hire for skills and potential. With 80+ nationalities, 45% women, of which 56% of women in our leadership team, diversity isn't a program; It's who we are. We've built a discrimination-free hiring process because the best teams are built on merit. AI at Qonto: AI is deeply embedded in how we work (here) - Every Qontoer gets unlimited access to the best AI tools. We want people who experiment without waiting for permission, push AI beyond the obvious, know when to trust it, and when to question it. ------------------------------------------------------------------------------------------------------ 🌏 Location: You can choose to work in Qonto as long as you're living in (or willing to relocate to) either Germany, France, Italy, Serbia, or Spain. Mission: Join us as a Backend Engineer to build the financial infrastructure that 600,000+ European SMEs depend on every day, from highly scalable APIs to robust banking services that handle real money, in real time, with zero room for mistakes. ➡️ As a Backend Engineer at Qonto, you will Design, build, deploy, and maintain services handling real financial transactions, owning reliability in production, not just at merge time Co-own service architecture, resilience, and scalability with respect to Domain-Driven Design principles Grow in technical leadership: lead design discussions, anticipate risks, and mento

Our mission and customers: We are creating the freedom for SMEs to succeed by delivering Europe's leading finance workspace with banking at its core, augmented by financial tools. We are proud to be rated 4.8 on Trustpilot, based on 55,000+ reviews. Our culture puts customer satisfaction at the core of what we do, as proven by our Net Promoter Score of 75 (more about our culture here). Our journey: Founded in 2017 by Alexandre and Steve, Qonto has grown to 1,600+ Qontoers serving over 600,000+ customers across 8 European countries. We have been profitable since 2023, and we are just getting started. Our beliefs: We hire for skills and potential. With 80+ nationalities, 45% women, of which 56% of women in our leadership team, diversity isn't a program; It's who we are. We've built a discrimination-free hiring process because the best teams are built on merit. AI at Qonto: AI is deeply embedded in how we work (here) - Every Qontoer gets unlimited access to the best AI tools. We want people who experiment without waiting for permission, push AI beyond the obvious, know when to trust it, and when to question it. ------------------------------------------------------------------------------------------------------ 🌏 Location: You can choose to work in Qonto as long as you're living in (or willing to relocate to) either Germany, France, Italy, Serbia, or Spain. Mission: Join us as a Backend Engineer to build the financial infrastructure that 600,000+ European SMEs depend on every day, from highly scalable APIs to robust banking services that handle real money, in real time, with zero room for mistakes. ➡️ As a Backend Engineer at Qonto, you will Design, build, deploy, and maintain services handling real financial transactions, owning reliability in production, not just at merge time Co-own service architecture, resilience, and scalability with respect to Domain-Driven Design principles Grow in technical leadership: lead design discussions, anticipate risks, and mento

Who We Are At Justworks, you’ll enjoy a welcoming and casual environment, great benefits, wellness program offerings, company retreats, and the ability to interact with and learn from leaders in the startup community. We work hard and care about our most prized asset - our people. We’re helping businesses get off the ground by enabling them to focus on running their business. We solve HR issues. We’re data-driven and never stop iterating. If you’d like to work in a supportive, entrepreneurial environment, are interested in building something meaningful and having fun while doing it, we’d love to hear from you. We're united by shared goals and shared motivations at Justworks. These are best summed up in our company values, which are reflected in our product and in our team. Our Values If this sounds like you, you’ll fit right in. Who You Are You’re a quick learner and can deliver results in accordance with rules and regulations. You catch even the smallest of details and know what they mean for the bigger picture. You’re curious about working with a professional employer organization (PEO) and are confident in your ability to boost operations in this particular space. As a Health Insurance Underwriting Assistant, you will assist the team of Underwriters with file review and data reconciliation needs, related to prospective customers’ insurance applications. You will be helping others solve problems and will be building something meaningful in an entrepreneurial environment. Your Success Profile What You Will Work On Review applications and related documentation for acceptability according to underwriting guidelines and determine tasks to be completed before moving forward Ensure all required customer documentation is accurate and collected in a timely manner Act as liaison with vendors and internal sales teams through direction of leadership Apply principles of logical thinking to define problems, collect data, and create resolutions Communicate with company un

Who We Are At Justworks, you’ll enjoy a welcoming and casual environment, great benefits, wellness program offerings, company retreats, and the ability to interact with and learn from leaders in the startup community. We work hard and care about our most prized asset - our people. We’re helping businesses get off the ground by enabling them to focus on running their business. We solve HR issues. We’re data-driven and never stop iterating. If you’d like to work in a supportive, entrepreneurial environment, are interested in building something meaningful and having fun while doing it, we’d love to hear from you. We're united by shared goals and shared motivations at Justworks. These are best summed up in our company values, which are reflected in our product and in our team. Our Values If this sounds like you, you’ll fit right in. Who You Are You’re a quick learner and can deliver results in accordance with rules and regulations. You catch even the smallest of details and know what they mean for the bigger picture. You’re curious about working with a professional employer organization (PEO) and are confident in your ability to boost operations in this particular space. As a Health Insurance Underwriting Assistant, you will assist the team of Underwriters with file review and data reconciliation needs, related to prospective customers’ insurance applications. You will be helping others solve problems and will be building something meaningful in an entrepreneurial environment. Your Success Profile What You Will Work On Review applications and related documentation for acceptability according to underwriting guidelines and determine tasks to be completed before moving forward Ensure all required customer documentation is accurate and collected in a timely manner Act as liaison with vendors and internal sales teams through direction of leadership Apply principles of logical thinking to define problems, collect data, and create resolutions Communicate with company un

Who We Are At Justworks, you’ll enjoy a welcoming and casual environment, great benefits, wellness program offerings, company retreats, and the ability to interact with and learn from leaders in the startup community. We work hard and care about our most prized asset - our people. We’re helping businesses get off the ground by enabling them to focus on running their business. We solve HR issues. We’re data-driven and never stop iterating. If you’d like to work in a supportive, entrepreneurial environment, are interested in building something meaningful and having fun while doing it, we’d love to hear from you. We're united by shared goals and shared motivations at Justworks. These are best summed up in our company values, which are reflected in our product and in our team. Our Values If this sounds like you, you’ll fit right in. Who You Are The mission of Justworks’ Product Marketing team is to define, articulate, and differentiate our value proposition to the right audiences—positioning our products for growth, adoption, and long-term success. As we continue evolving into a multi-solution platform, how we price and package our offerings is foundational to customer trust, perception, and long-term differentiation. We are seeking a strategic and analytically strong Senior Product Marketing Manager, Pricing & Packaging to help execute Justworks’ multi-year Pricing & Packaging (P&P) strategy. This role will report to the Head of Pricing & Packaging and will play a critical role in driving monetization initiatives, packaging evolution, and pricing experimentation across the business. Pricing & Packaging is a key growth lever at Justworks. In this role, you will help translate pricing principles into actionable recommendations, conduct rigorous analysis to inform pricing decisions, and partner cross-functionally with Product, Finance, Revenue, Strategy, and Marketing to bring pricing strategies to life. This role is ideal for a highly analytical PMM w

About Mixpanel Mixpanel is the leading product intelligence and analytics platform, trusted by more than 29,000 companies to help understand how people use the products they build. By combining powerful analytics with AI that knows your business, Mixpanel helps teams see what’s working, diagnose what’s not, and decide what to build next. Learn more at mixpanel.com . About the role At Mixpanel, we believe design excellence is a competitive moat. In a world where AI makes it easier than ever to ship, we believe the quality of the experience — how it feels, how it builds trust, how it handles complexity with grace — that separates good products from great ones. As a Staff Design Engineer at Mixpanel, you'll sit within the design organization and lead the transformation of our design system from a component library into something far more important: the infrastructure that powers how we design, build, and ship in an AI-native world. You'll encode our craft, standards, and vision directly into the systems, tools, and workflows that every designer, engineer, and AI agent in our org builds on. This isn't a maintenance or systems stewardship role. It's a transformative one. You'll work at the frontier of what design and engineering collaboration looks like when AI writes most of the code, agents prototype from intent, and the design system is less a library and more a living foundation for everything we ship. You'll be the designer who ships production code. The engineer who holds an uncompromising craft bar. The person who sees the future of how Mixpanel will look and behave in an AI-native world, and builds the infrastructure to make it real. What you'll do Build the infrastructure for an AI-native design practice Translate Mixpanel's design standards, principles, and taste into systems that live in the code. Build a token system, component library, documentation, and guidelines that AI agents, AI coding tools, and AI prototyping workflows can reliably build on. Evolve ou

Who We Are Nuro believes self-driving vehicles are the most immediate and profound opportunity for AI to drive positive change in the physical world. Safer streets, more time for what matters, and easier access to the world around us, that’s why we’re building a universal autonomy platform: self-driving for all roads and all rides. Founded in 2016, Nuro is a physical AI company developing Level 4 autonomous driving technology for a wide range of vehicles, use cases, and markets. Powered by the Nuro Driver™, our universal autonomy platform enables the global mobility ecosystem to deploy autonomy at scale, from robotaxis and logistics fleets to personal vehicles. With years of real-world deployment experience and a flexible, partner-led business model, Nuro is working toward a future where millions of autonomous vehicles powered by our technology help make everyday life safer, easier, and more connected. Nuro has raised over $2B in capital from Uber, NVIDIA, Google, Softbank, Fidelity, T. Rowe Price, and other leading investors. About the Role We’re a team of high-output generalists where ML and systems engineering converge. This is not a "run the models" role. We reason from first principles about why a perception model learns what it learns, close the gaps that cap its performance, and raise the bar on the data and evaluation loop that drives autonomy. Your work will directly impact how autonomous systems understand rare scenarios, adapt to global geographies, and scale safely. About the work You’ll solve autonomy’s hardest data challenges through applied ML and systems rigor: Diagnose why perception models underperform on the long tail, and turn that into targeted data and training priorities. Design eval metrics and regression detection that tell us whether a model is ready. Curate and clean training data for segmentation and occupancy; hunt the data problems that silently cap performance. Run controlled ML experiments and ablations; cleanly sepa

The Team + The Role Our Emerging Team is focused on building AI Products for our product experience (PX) platform. We build from the ground up to explore, prototype, and ship AI-native experiences that change how software teams understand and serve their users. This is not an AI layer added to existing product; it is a deliberate bet on what product intelligence looks like next. The team operates with high autonomy, moves quickly, and builds products without clear precedents. As a Staff Software Engineer (AI), you will sit at the intersection of deep technical capability and strong product judgment. You will design and build production-grade AI systems, including RAG pipelines, agentic workflows, and LLM-powered features, while making clear tradeoffs across prompting, fine-tuning, architecture, evaluation, and deployment. You will also partner closely with product, design, and engineering stakeholders to frame the right problems and communicate technical decisions clearly. This role is based in our New York office. What this looks like day-to-day Applied AI systems: Design and build AI-native systems, including RAG pipelines, agentic workflows, and LLM-powered product features. You will take ideas from prototype through production and ensure they can support real users. Model strategy: Make principled decisions about when to prompt, when to fine-tune, and when to use a different technical approach entirely. You will explain those tradeoffs clearly to engineers and non-engineers. Evaluation and guardrails: Instrument and evaluate model outputs rigorously by defining evaluation frameworks and identifying hallucinations early. You will implement guardrails that hold up under real-world usage and load. Productionize AI ownership: Own model deployment, monitoring, latency optimization, cost management, and reliability at scale. You will ensure AI systems are observable, performant, and production-ready. Full-stack delivery: Contribute across the stack when needed to get

The Team + The Role The Product Design team at Pendo works closely with senior product leaders and sits at the center of product strategy and delivery. The team operates close to both the problem and the build, using LLM-assisted exploration, code-level prototyping, and customer validation before work moves into Figma for systems and polish. Designers ship across a multi-app platform with a high bar for craft, reliability, and product impact. As a Staff Product Designer, you will lead design across the platform and move toward the highest-impact work. You will own projects end-to-end, from problem framing through shipping, partnering with product and engineering to make sophisticated experiences feel simple. AI-assisted workflows are part of how this team works every day, and this role is expected to use, improve, and share those workflows. This role is based in our Raleigh office. What this looks like day-to-day Platform design leadership: Lead design across multiple product areas and own projects from problem framing through shipping. Partner with product and engineering to reduce complexity without losing capability, starting from customer need rather than feature requests. Prototyping and validation: Build interactive prototypes using code-adjacent tools and validate them with real users before engineering investment. Use findings to sharpen flows, surface edge cases, and improve the work before full systemization. AI-integrated workflow: Use AI tools actively across the design process, including LLMs for problem framing and brief development, Cursor and Claude for prototyping, and generative tools for faster interface exploration. Document and share prompts, patterns, and workflows with design and engineering partners. Design systems: Translate and evolve Pendo's design principles into reusable components and patterns. Identify when to extend existing systems and when to push them forward, then drive those decisions with stakeholders. Cross-functional alignment

About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company. At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in. Available Locations Austin, US About the Role Cloudflare is looking for an enthusiastic and analytically-minded intern to join our Network Strategy team. This role is designed to provide a comprehensive introduction to the fundamental principles of Network Strategy at Cloudflare, with a focus on developing the skills necessary for long-term growth within the team. The intern will support key initiatives by executing on special projects designed to

About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company. At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in. Available Locations: London, UK About the Role Cloudflare is looking for an enthusiastic and analytically-minded intern to join our Network Strategy team. This role is designed to provide a comprehensive introduction to the fundamental principles of Network Strategy at Cloudflare, with a focus on developing the skills necessary for long-term growth within the team. The intern will support key initiatives by executing on special projects desi

About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company. At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in. Available Locations: Austin About the Department The Office of the CTO is the strategic engine for Cloudflare’s technology vision. We look beyond the horizon to identify emerging trends, drive technical innovation, and ensure our engineering culture remains principled and curious. We operate at the intersection of deep technical strategy and high-level business execution. What You'll Do As the CTO Operations Lead you will act as a strategic force

Who we are At Twilio, we’re shaping the future of communications, all from the comfort of our homes. We deliver innovative solutions to hundreds of thousands of businesses and empower millions of developers worldwide to craft personalized customer experiences. Our dedication to remote-first work , and strong culture of connection and global inclusion means that no matter your location, you’re part of a vibrant team with diverse experiences making a global impact each day. As we continue to revolutionize how the world interacts, we’re acquiring new skills and experiences that make work feel truly rewarding. Your career at Twilio is in your hands. . Hiring and how we work We use Artificial Intelligence (AI) to help make our hiring process efficient. That said, every hiring decision is made by real Twilions! Also, while we are a remote-first company, you may be asked to report in person on an ad-hoc basis for team gatherings, functional off-sites or customer meetings. . See yourself at Twilio Join the team as Twilio’s next Sr AI Architect - Conversation AI. About the job This position is critical to leveraging Twilio’s massive data ecosystem and unmatched communication scale to build our customer facing AI capabilities, such as Twilio Conversational Memory, Enterprise Knowledge, Behavioral Data Intelligence and many more to power the future of our customer engagement platform. As a Sr. AI Architect for Twilio Platform, you will also influence the design and evolution of our company-wide ML/AI Ops foundation. You will set the long-term technical vision, establish architectural guardrails, and ensure strict adherence to responsible AI principles. You will drive cross-organizational initiatives, solve complex technical challenges, and elevate the technical standards across all of Twilio. Transitioning AI/ML concepts from cutting-edge research to resilient, compliant, and cost-effective production systems will be your core mission. As a Sr AI

The Product Management team drives Asana’s product strategy and execution, translating customer needs and opportunities into a compelling roadmap and working cross-functionally to deliver impactful solutions for team productivity and collaboration. We’re helping to define the Work Management category and inventing new ways for teams to work more efficiently together and see the larger purpose behind their work. Our team works directly with Engineering, Design, Experience Research, and Data Science, as well as with Sales, Support, and Marketing to ship great products. You’ll take part in every type of product work here — from strategy to product to process improvements — conceptualizing, launching, and iterating on Asana itself for millions of teams around the world. Joining our recently formed team in Warsaw, you’ll contribute to the product direction for Asana’s new product for the agentic software development lifecycle—our bet on what the next $100M+ line of business looks like. As a Staff Product Manager, you’ll work from first principles to define how modern teams plan, sequence, and ship work in an AI-native world. You’ll partner closely with design, research and engineering to turn ambiguous problem spaces into sharp, opinionated workflows that feel fast, minimal, and “obviously right” to high-performing teams. You’ll validate your bets directly with demanding customers—from hypergrowth startups to global enterprises—and be accountable for turning those insights into a focused roadmap and real business impact. This role is based in Warsaw with an office-centric hybrid schedule. The standard in-office days are Monday, Tuesday, and Thursday. Our employees in Poland are employed under a contract of employment. What you’ll achieve Deliver a high-craft product to a new kind of customer for Asana Build product with strong passion and operational maturity Create a product strategy to balance multiple priorities and use c

We are dedicated to ensuring proactive elimination of entire classes of security risk by engineering the core libraries, platforms and frameworks that provide secure guardrails for all Asanas. We are looking for a Senior Software Engineer to join our new Security Development team. This team is focused on building durable, secure-by-default solutions to protect Asana's infrastructure and product. Instead of acting as gatekeepers, we build guardrails that empower engineering teams to move quickly and safely. You will be responsible for engineering preventative controls at scale, focusing on building platforms and frameworks that eradicate systemic risks. This role is based in our San Francisco office with an office-centric hybrid schedule. The standard in-office days are Monday, Tuesday, and Thursday. Most Asanas have the option to work from home on Wednesdays. Working from home on Fridays depends on the type of work you do and the teams with which you partner. If you're interviewing for this role, your recruiter will share more about the in-office requirements. What you’ll achieve: Design, build, and maintain secure-by-default frameworks, libraries, and platforms to eliminate entire classes of vulnerabilities. Engineer and improve core security services, including our access control frameworks, secrets management infrastructure, and AWS permissions systems. Develop and own the platform for vulnerability remediation, creating tooling that empowers engineering teams to address risks efficiently. Partner with product and infrastructure teams to architect and implement foundational security controls for Asana including cloud networking, and compute infrastructure. Partner with product teams to effectively offer recommendations for how to secure projects at all phases of implementation (design, development, launch, and/or incidents) Influence engineering initiatives through design reviews, communicating security principles, and helping teams make sound security trad