React Universe Summit

Seth Webster (@seth.blue), Executive Director of the React Foundation, is our first confirmed speaker at React Universe Summit. As Head of React at Meta, he drove the shifts that define how we build with React Native today. June 23, 2026 · New York City → reactuniverse.com

Hello New York City! React Universe Conf is morphing into React Universe Summit. New city, new format, and even sharper focus on trends emerging in React Native and AI Engineering today. Join us on June 23, 2026. Tickets and partnerships are now open. Click for more: reactuniverse.com

Happy New Year everyone! Let’s kick off the 2026 event season. 🔥 First stop: React Universe Meetup x Zalando in Berlin on Jan 29. RSVP: clstk.com/4suY4ky We’re also looking for speakers, so apply now to take the stage at Zalando’s headquarters: clstk.com/4soAqWN

OTA: centralized hotfix tool or decentralized deployment? Adam Mruk (Klarna) uses it as a "fire extinguisher" for critical bugs. Zack Chapple (Zephyr Cloud) argues for Module Federation, giving teams deployment power across the full stack ▶️ youtu.be/GmOsE3qRSo0

We played the newlyweds game with Cedric van Putten, Tommy Nguyen & Delphine Bugner. What we learned? ➡️ Everyone hates class components. ➡️ Build fix horror stories: "wrote my own CLI" & "unplugging the external screen". ➡️ Don't put everything in one `index.ts` file! Full game 📺 youtu.be/otjBIPLn5WU

"The biggest performance issue in React is just rendering too much". @jayz.us argues the real bottleneck in RN isn't lists, it's state. React's top-down render isn't performant by default. His fix: a signal-based system where components subscribe only to the state they need ▶️ youtu.be/W8ThNQDZtYI

Tired of rewriting CSS for React Native? Xuan Huang introduces Lynx, a framework-agnostic engine. It features native CSS support (port web CSS directly) and a two-thread model (BTS/MTS) for better hybrid UI. He also discusses React as a spec & community Vue/Svelte ports ▶️ youtu.be/L_u08K7xc18

Node-API for React Native wasn't built in a weekend. Khalef Hosany (Microsoft) & @kraenhansen.dk (MongoDB) detail the community effort, from a Windows-specific prototype to a public standard. They discuss "nerd sniping" & why they need your feedback now ➡️ youtu.be/TN4ENNf31vs

React Native is 10 years old, but stability is the new hot topic. Chris Trag & Steven Moyes (Amazon) argue stable core just means more expansion (TVs, AR, Web). This puts a huge burden on library devs. They explain why brownfield is the real path to adoption ▶️ youtu.be/4LpXTepmgec

Meet Uniwind! @jpudysz.bsky.social (Codemask) discusses his new, blazing-fast styling library for Tailwind fans in React Native. He explains why he built it, how it shares the same core as Unistyles (which isn't going away!), and the power of JSI ▶️ youtu.be/ERAKXQDXbwM

How do you teach an AI to write better code? @rojo.bsky.social (Vercel) shares how he uses his own talk slides to train AI on composition. Plus, he gives the scoop on the upcoming native v0 app and his AI-driven workflow ▶️ youtu.be/jnYn9ww-YQs

What does a Developer Advocate actually do? @anisha.dev (Amazon) pulls back the curtain on DevRel. It's not just talks; it's being "Developer Zero”, testing APIs, and acting as the developer's best friend to add the final salt and spice ▶️ youtu.be/8HYW3nWCMec

Is AI just "crypto rubbish"? @mattpocock.com shares his journey from skeptic to believer. Then, @szymonrybczak.bsky.social (@callstack.com) tackles AI's privacy problem with react-native-ai, bringing secure, offline LLMs to your mobile app ▶️ youtu.be/DCfn1UlSZzs

How do you create software that runs the world and lasts till 2050? D. Richard Hipp, the creator of SQLite, shares its origin story, the power of aviation-grade testing, and why it's so reliable ▶️ youtu.be/5zQdYx-fqJg

When will we get React Native 1.0? @grabbou (@callstack.com) discussed the roadmap. Plus, @mrousavy.com (@margelo.com) explains why Nitro isn't just "faster Turbo Modules" but a fundamentally different, high-performance alternative ➡️ youtu.be/YlyI_PD0DeE

Stop recompiling native modules! Vladimir Morozov (Microsoft) & Mariusz Pasiński (@callstack.com) explain how Node-API brings ABI stability to React Native, ending the update nightmare and allowing polyglot modules (Rust, Go!) ⬇️ youtu.be/MsWmfBlx6jw

“Learn once, write anywhere” is the React motto, but what does it really take to deploy across mobile, web, desktop, AR/VR & TVs? Leaders from Amazon, Expo, Microsoft & OSS shared the tradeoffs, tools & patterns behind building apps for every device. ▶️ youtu.be/bzhde_qlUgw

From Expo apps to GraphQL servers to publishing packages - Christoph Nakazawa demonstrates how good defaults and open source tooling let you focus on your product instead of endless setup decisions. ▶️ youtu.be/rxPTEko8J7c

Cross-platform at scale is more than “just add React Native". Rene Eichorn (Zalando) shows how his team is migrating the Zalando app: brownfield integration, React Strict DOM, and unifying patterns across web & mobile. ▶️ youtu.be/U76fQ_9A89Q

Distributed web dev is standard. But what about mobile? @Zackary_Chapple (Zephyr Cloud) shows how Re.Pack 5 + Module Federation unlock true distributed mobile development, with independent modules, release velocities & instant rollbacks. ▶️ youtu.be/VqigrlCaB58

Async operations don’t have to mean flickering UIs and messy state management. @aurorascharff.no (Crayon Consulting) shows how concurrent rendering + Actions fix these pain points in React 19, and what’s next with View Transitions. ▶️ youtu.be/I3AsmAWWGEs

Fastest list in React Native & React DOM? Legend List v2. @jayz.us (Legend / Bravely) reveals the optimizations behind it: signals, minimized renders, and platform-specific tricks for web & mobile. ▶️ youtu.be/Ui3qVl80Pzg

At HelloFresh, migrating existing iOS and Android apps to React Native meant rethinking how to deliver consistent cross-platform UI at scale. @ohansemmanuel.bsky.social presents a battle-tested case study of how GenAI accelerated cross-platform React Native adoption. ▶️ youtu.be/sNQh10QxSk4

React Native is moving beyond single-threaded JavaScript. @_tjzel (@swmansion) showed how react-native-worklets unlocks concurrent JavaScript, pushing single-threaded JS to its multithreading limits. ▶️ youtu.be/Td2aADUYMwg

React Native DevTools are powerful, but they still lack one crucial piece: extensibility. @chmal.it (Senior Software Engineer at @callstack.com) introduces Rozenite - a plugin framework that fills the gap by providing a way to extend React Native DevTools with custom plugins. ▶️ youtu.be/J0rXmTIGGRk

Node-API in React Native means cross-runtime, type-safe, and faster React Native development. @kraenhansen.dk (@MongoDB) shows how Node-API brings faster builds, fewer native module failures, and better testing. ▶️ youtu.be/Wco3uHxik8w

Is zero-cost runtime styling in React Native possible @jpudysz.bsky.social reveals both the engineering challenges and future opportunities of runtime styling in React Native, showing why the quest for zero-cost styling continues. ▶️ youtu.be/DCCWkTbNzhI

OTA sounds simple - ship updates instantly like the web. But at scale, it’s an illusion. Adam Mruk (Klarna) shares what it really takes to build a reliable OTA system for millions of users. ▶️ youtu.be/hBoAD6sYDYo

Composition is React’s most powerful tool, but it’s also one of the most misunderstood. @rojo.bsky.social, Head of Mobile at @vercel.com, showed how composition is the key React pattern for scaling codebases - from one component to thousands - while staying maintainable. ▶️ youtu.be/4KvbVq3Eg5w

A React Universe Conf 2025 highlight: a panel marking 10 years of React Native with @tomocchino.com (Vercel), Christoph Nakazawa (Nakazawa Tech), @ccheever.com (Expo) & @grabbou.com (Callstack). Milestones, key learnings, and most importantly, opportunities for the future. ▶️ youtu.be/V5rgg9w25AY

Is your app built on guesswork or backed by data? @popovaviolina.bsky.social (ClipMyHorse.TV) showed how A/B testing in React Native helps teams move from intuition-driven to data-driven development. ▶️ youtu.be/XZjnxHCnGI0

Bridging C++ into React Native has always been painful. Dr. Kubilay Küçük (Oxford University) introduced cpp.js.org - an automated toolset for bringing modern C++ libraries into React Native & WebAssembly with ease. ▶️ youtu.be/TjrZIrgKQWM

From class components ➡️ hooks ➡️ compiler. Anisha Malde (Amazon) mapped out the generations of React, and how each shapes the way developers code, learn & share best practices. ▶️ youtu.be/9CHdcVq1rto

LLMs aren’t the only AI. In this talk Richard D. Hipp (creator of SQLite) reframes SQL as the AI assistant you already have, and shows why mastering it is key to long-term developer productivity. ▶️ youtu.be/0668eKZtKko

There’s one library you need for building AI-powered apps in TypeScript: Vercel’s AI SDK. @mattpocock.com (Author of Total TypeScript) gives a hands-on crash course, showing how to integrate AI into React apps while avoiding vendor lock-in. ▶️ youtu.be/ihHLs6v7Lko

Ottrelite bridges the gap between React Native DevTools and modern observability needs, making it easier than ever to trace, profile, and monitor apps across platforms. Artur Morys-Magiera and Dominik Dolny from Callstack bring you the complete picture in one talk. ▶️ youtu.be/ebfBtiWbqwE

Nitro has become the foundation for some of the most powerful React Native libraries today. At React Universe Conf 2025, @mrousavy.com (@margelo.com) shared Nitro’s journey & what’s next with Nitro Image and VisionCamera. ▶️ youtu.be/25_FWxNh92A

The Node API is ABI-stable, engine-agnostic & already powering Node.js, Deno & Bun. @microsoft.com engineers Vladimir Morozov and Khalef Hosany showed how they integrated Hermes with Node API - unlocking universal native modules & long-term compatibility for React Native. ▶️ youtu.be/JnzkIzw-Jis

Upgrading React Native doesn’t have to be painful anymore. At React Universe Conf 2025 @excbadacc.es unveiled a new release process - making React Native more predictable, stable & developer-friendly than ever. And React Native 1.0 is on the horizon 🤞 ▶️ youtu.be/GPtopk4y2LI

React Native turned 10 and steps into a new era. @grabbou.com , Riccardo Cipolleschi and @thymikee.bsky.social explored its past, present, and future - stability, scalability, and a stronger ecosy stem - setting the tone for React Universe Conf 2025. ▶️ youtu.be/JEQ2g3BBKTg

React Universe Conf memories unlocked 📸 Browse the Photo Gallery and spot yourself in the wild! www.reactuniverseconf.com/photo-gallery

Wow, what a ride it was 🔥 Huge thanks to all the amazing speakers, hosts, and attendees - you made the magic happen! It's a great honor (and fun!) to be a part of such a community. Pics and talks coming soon, so stay tuned!

The new talk ViewTransition in React of the RSC Queen 👸 @aurorascharff.no is about to start. Live coding while explaining things the entire talk, no slides. 🤯 @reactuniverseconf.com

😍 Love seeing @kadi.bsky.social on stage at @reactuniverseconf.com with other talented devs. 🥂Today is actually Kadi's 2 year 𝝠 Expo anniversary and her talent is a massive reason for the exponential growth of 𝝠 Expo over that period of time. Thank you for everything that you do Kadi!

Had a great time at @reactuniverseconf.com today

@reactuniverseconf.com React Universe Conf 2025

Good morning, Wrocław! Day 2 is packed (again) - time to recharge! Stop by the Amazon Developer coffee zone for world-class brews, because great vibes run on great coffee🤘 Huge thanks to Amazon for the boost!

Last-minute announcement: @vercel.com joins React Universe Conf 2025 as a Bronze Sponsor! From powering the frontend cloud to helping teams ship faster, Vercel is shaping the future of the web. Thrilled to have them on board!

Me and @devlinduldulao.bsky.social are on our way to @reactuniverseconf.com 🤩 Looking forward to presenting a fresh talk on Thursday!

How do you ship React apps across phones, browsers, TVs & even AR/VR? Find out in the closing panel with leaders from Amazon, @expo.dev, Storybook & @microsoft.com: Chris Trag, @kadi.bsky.social, Danny Williams, Mo Gorhom, Khalef Hosany. Are you joining us? 🎟️ clstk.com/4mA1NtI