The main JavaScript conference

Jason Williams is a Senior Software Engineer at Bloomberg LP in London, UK, focusing on performance. His work in performance includes collaborating with the W3C Web Performance Working Group to bring Container Timing to the web, a more accurate improvement over Largest Contentful Paint. He has also collaborated on V8 improvements, bringing heat snapshot times down from 10 minutes to 6 seconds.

In the open-source community, he is the original author and developer of Boa, an open-source JavaScript engine written in Rust.

He is heavily involved in the evolution of ECMAScript, serving as an author on the Stage 4 proposal for Promise.allSettled, which ensures all promises settle before returning results. He is also a champion for the Stage 3 Temporal proposal (for which Boa’s temporal_rs the implementation used in Chrome), which aims to provide standard objects and functions for working with dates and times in ECMAScript.

Eddy is a passionate Software Engineer with 8+ years of experience with a focus on front-end web development, but also expanding in backend, mobile development, and DevOps. Eddy works as a consultant at FrontValue, and he works on SaaS projects on the side.

Pratyusha Singaraju is a Senior Software Engineer at Netflix Inc., where she architects and builds sophisticated backend services that power the content understanding infrastructure behind Netflix's search, collections, and ratings systems. Her work directly impacts how millions of users discover and engage with content across the platform. Prior to Netflix, Pratyusha was part of Microsoft's data team for Bing, where she worked on knowledge graph initiatives spanning diverse public domains, including food, nutrition, politics, events, and building an enterprise knowledge graph.

I’m a frontend developer with a growing focus on creative development. I work with Next.js, Three.JS, with a strong interest in performance and in exploring how traditional UI and graphics can coexist. Currently at basement.studio.

Developer at basement.studio specializing in React, Three.JS and WebXR. I’m currently focused on pushing the boundaries of the web with shaders and bridging the gap between AI and spatial computing. When I’m not fine-tuning code, I’m experimenting with the future of open-source graphics.

Eddie is a Fullstack developer with more than 15 years of experience, and has worked with UK Government institutions and banks, global fintechs and startups. In the last 6 years he has focused on creating technical content on Javascript/Typescript, databases, DevOps, testing and AI.

Liang Gong works at Meta on building and optimizing web and developer infrastructure, with a focus on improving performance, memory efficiency, reliability, and user engagement. He is the creator of the open-source project MemLab and holds a Ph.D. in computer science from UC Berkeley, where his research was in the area of programming languages, software engineering, and JavaScript program analysis.

Maurice de Beijer is an independent software consultant and trainer. He specializes in TypeScript, ECMAScript, React and Svelte. His work includes popular collaboration software as well as a large, global, safety application for the oil and gas industry. He has a preference for working with startups and smaller, more dynamic companies. Maurice is also active in the open source community. He teaches ECMAScript, TypeScript, React, Cypress, Playwright and RxJS courses. Since 2005, he has received Microsoft’s Yearly Most Valuable Professional Award. Further, Maurice is active in the Dutch dotNed user group and helps organize its meetings.

My primary interest is self development and craftsmanship. I enjoy exploring technologies, coding open source and enterprise projects, teaching, speaking and writing about programming - JavaScript, Node.js, TypeScript, Go, Java, Docker, Kubernetes, JSON Schema, DevOps, Web Components, Algorithms 👋 ⚽️ 🧑‍💻 🎧

JavaScript developer with full-stack experience and frontend passion. Interests: web components, AI, rowing, improv theatre

Now part of the MongoDB Database Experience team, Anna has previously been one of the most active contributors to Node.js core. She is fueled by a passion for Node.js and its community, and loves sharing what she learns both during and outside of working hours.

Dan Shappir is Staff Engineer and Engineering Manager at Snyk. Previously he was Performance Tech Lead at Wix and at NEXT Insurance. Dan has 30 years of software development experience, and has worked on systems ranging from multiuser games to designing and building large scale Web applications. He is an international keynote speaker at technical conferences, a host on the popular JavaScript Jabber podcast, and an Invited Expert on the W3C Web Performance Working Group. Dan holds an MSc in Computer Science.

Senior Developer from Germany with over 15 years of experience building web apps and leading frontend teams, currently living and working down under in Australia. Pragmatic perfectionist, always looking for opportunities to learn and grow.

Frontend Engineer at Netflix, where he builds internal products that support the lifecycle of movies and TV series - from planning and production to launch and promotion.

With 7 years of experience in software engineering and a background in aerospace engineering, he is passionate about developer productivity, product-minded engineering, and practical applications of GenAI.

Dominik is a Frontend Engineer, React-Query maintainer working at Sentry, who blogs about all things React and TypeScript (https://tkdodo.eu/blog/).

Svelte Ambassador and Maintainer, sometimes called a mad scientist because of weird Javascript experiments that it does. It's one of the co-creator of Sveltelab and generally a huge nerd. Works as a SSE at Mainmatter.

Viola is a senior software engineer with over eight years of experience, focused on production reliability and security for modern web applications. She works across frontend, backend, and delivery pipelines, with a particular focus on authentication, observability, and testing strategies that prevent incidents. She is a Cypress Ambassador, speaks regularly at community events, and runs weekly workshops for engineers contributing to open-source projects.

I'm a frontend developer currently @ Meta. I love making cool things on the web with a focus on performant, satisfying UX. Recently moved to London to build a brand new AI-powered design system for WhatsApp.

Sylwia is a Senior JavaScript Developer with over a decade of experience. She has worked on a wide range of projects, from greenfield applications to complex migrations. As a Tech Lead, she focuses on helping teams modernize legacy codebases and build sustainable solutions.

Steve Ruiz is founder and CEO of tldraw, a London-based startup building an infinite canvas component for the web. The company is known for its tldraw SDK as well as for many viral AI demos including Make Real and tldraw computer. Prior to tldraw, Steve worked on several open source tools for creative products, including perfect-freehand and perfect-arrows.

My name is Erik Hanchett! I'm an author, teach and educator. I've been teaching software development for over 10 years on my YouTube channel, Program With Erik. I've also have given talks all over the world on frontend and fullstack development. Currently I work as a Senior Developer Advocate at AWS.

Tech Lead • Front-End Advocate • Mentor & Educator • Tech Blogger • Published Author • 100+ IT Certifications • 30K+ Followers • Docker Captain • Expert in React.js, Next.js, Angular, DevOps, Web Accessibility & Security

Kristiyan Velkov is a seasoned software developer and technical leader with more than 10 + years of expertise in JavaScript and open-source development. His comprehensive skill set includes: JavaScript, TypeScript, React.js, Angular, Vue.js, Next.js,DevOps,Web accessibility,Security and DevOps. A lifelong learner, Kristiyan has earned over 100 IT certifications. With experience at some of the world’s leading IT organizations, Kristiyan thrives as a technical lead, driving innovative projects and mentoring teams to achieve growth and excellence. His thought leadership has garnered a significant following:

• 30,000 LinkedIn connections
• 7,000 Medium subscribers
• 100,000+ monthly readers
• 4 IT books.

Louis is a co-founder of Vibe Kanban. A self-taught full-stack engineer, he's spent five years at the intersection of AI and developer productivity, from neural code search (2021) to LLM-based code translation (2024) to Vibe Kanban today. He also runs the AI Tinkerers London community.

I’m Karthick working as a Senior Web Platform developer in Sixt. I spend my time building JavaScript platforms, refining workspace-driven architectures, and designing the infrastructure layers that tie everything together. From Nx/pnpm monorepos to multi-instance microfrontends, I focus on the patterns, boundaries, and shared capabilities that help application teams scale without friction. I love diving into how large JS systems behave in the real world and sharing practical lessons that simplify them.

Freelance Frontend Architect | Helping You Build Scalable, AI-Ready, Frontend Architecture. Digital nomad from Spain. As a Freelance Frontend Architect, I design and build robust, maintainable applications using React, Angular and Vue—with a strong focus on architecture, testing, and software craftsmanship. I specialize in DDD, Hexagonal Architecture, and Modular Design Systems.

International speaker and Codemotion committee member and ambassador, and a published book author, I’m passionate about empowering teams and sharing knowledge through talks, workshops, and open-source contributions. For me, code is not just a tool—it’s a craft.

Wendy Erdheim-Poch is a QA Automation Engineer at Elementor with over nine years of experience in JavaScript testing and automation. She helps development teams build confidence in their code by making quality a natural part of the workflow. She’s passionate about pushing buttons, breaking things, and making sure everything works the way it should. Outside of tech, she’s a swim teacher, mom of two, and enjoys camping and creative projects.

Performance testing specialist with 7 years of experience delivering reliable and scalable applications. I design and implement performance testing strategies from scratch, identify bottlenecks, and provide actionable insights that improve system stability and user experience.

Skilled in JMeter, BlazeMeter, Grafana, InfluxDB, Jenkins/TeamCity, and cloud environments (AWS, Azure). Experienced with monitoring and observability tools like Kibana, Telegraf, and Zabbix, enabling proactive issue detection and performance optimization.

I help teams ensure their applications handle real-world traffic efficiently, reduce downtime, and meet business performance goals.

Sohan is a Lead Developer Advocate at AuthZed, based in the Netherlands. He started his career as a developer building mobile apps and has been living in the cloud since 2013, in companies such as Amazon, Fermyon and Gupshup. He is also an O' Reilly author, having created a course on Cloud Concepts for Everyone. He has always been interested in emerging technologies and how it shapes the world around us.

Alon is a Software Engineering Team Lead at Monday.com with over a decade of experience in the software industry. Prior to joining monday.com, he worked at companies such as at Intel, BrightSource, and MyHeritage, specializing in Frontend development before transitioning to leadership roles in 2020. Alon is passionate about "doing the right things right," combining architectural guidance with empathetic leadership to help his team reach their full potential. He holds a degree in Computer Science from the Hebrew University of Jerusalem, and in his spare time, loves to travels the world with his wife and kids, and as a true coffee enthusiast he manages a coffee community and develops shopping aid tools.

Engineering leader with 10+ years of experience in software development, QA, and team leadership. Passionate about delivering high-quality products, empowering teams, and fostering a culture of collaboration and continuous growth. Skilled in engineering management, project execution, and aligning technical excellence with business goals.

Fred is a passionate and (very 😅) opinionated builder. He's been in the infrastructure space, and in particular in serverless technologies back when they were new-age.

He built Lift, to help people ship piece of infrastructure without previous knowledge, and then built Revant to help those same people reduce their newly generated infra cost... He's also been part of the AWS community builder team for 5 years.

He's now building with Alpic the missing infrastructure layer for the new agentic internet where AI consume services instead of human. He's working full time on Skybridge, a new open-source framework to build ChatGPT and MCP Apps.

Is a Principal Engineer at Zalando, focusing on partner facing platforms, their component library, and the developer experience around them.