Name: React Day Berlin 2026
Start: 2026-12-04T07:00:00.000Z
End: 2026-12-07T19:00:00.000Z

Aleksei Podgaev

Lera

Karyna Bunta

Michael Geiss

Vitor Barbosa

Sanketh Kumar

Arash Sarfehjou

Nicolas Schaber

Aziz Shahhuseynov

Yakovlev Eugen

Varun

Michael Chiche

Ivan Almasi

Veranika Kasparevych

Keertivaas S

Martin Jensen

Rafael Piazdecki

Onyedikachi Okemiri

ABHISHEK GUPTA

Usman Khan

Danilo Britto

Camila Coello Merino

Chris Eady

Jocelyn 

Max Medina

In this workshop we'll dive into the latest advancements in React and best practices for building modern React apps. We'll take a look at modern NextJS and React Router 7 Framework along with React's "React Server Components". We'll also talk about improving the data-fetching strategies of your SPAs along with options for migrating your SPA to modern React Router.

Modern React Architecture

Brad Westfall

Rich text editing on the web is a solved problem. On mobile, it's a battlefield. At Digg, we built a rich text editor in React Native anyway. This talk covers what we built, what broke, and the one architectural decision that made everything else possible: a universal content format that every platform, from the editor to the backend to moderation, agrees on. You'll walk away with a practical framework for designing cross-platform content formats, useful well beyond rich text for any unified system.

Building a Rich Text Editor in React Native

Rubén Sospedra

AI has fundamentally changed how engineers work, but most hiring processes haven't changed at all. Coding assistants can generate solutions in seconds. System design answers can be refined with prompts. Candidates walk into interviews with powerful AI tools at their side. Yet many companies are still evaluating engineers as if AI didn't exist. So how do you actually assess engineering ability in this new reality? After interviewing hundreds of engineers at Elementor, I redesigned my hiring process for the AI era. Instead of trying to prevent candidates from using AI, I changed what we evaluate. Today we test how engineers think, how they collaborate with AI, and how they apply judgment when AI-generated solutions are incomplete, incorrect, or misleading. In this talk, I'll share what changed in our hiring process and what actually works in practice: how we evaluate coding ability when AI is involved, which system design questions reveal AI orchestration skills, and what behavioral signals distinguish high-impact engineers from candidates who rely on AI to mask gaps. Whether you're hiring engineers, preparing for interviews, or leading an engineering organization, you'll leave with a practical framework for evaluating engineering talent in the AI era.

Most Engineering Interviews Are Broken: Here's What Actually Matters in the AI Era

Dennis Nerush

Stop prompting. Start orchestrating. In four intense hours you'll go from using Claude Code like a faster autocomplete to commanding it like a senior engineer commands a team: engineering its context, deploying fleets of subagents, locking it down with hooks, and turning it loose on work that runs without you.Every Claude Code user hits a ceiling where the easy wins run out. The agent handles small stuff beautifully, then loses the thread on anything real. The difference between that ceiling and real mastery isn't better prompts. It's control. This workshop is about control.You'll spend the whole four hours inside CLASH, a real full-stack application, handed to you fully built so nothing stands between you and the hard parts. A serious codebase is the point: it's the only place agentic engineering shows you whether it actually holds up.The throughline is context. Treated carelessly, the context window fills with noise until the agent drifts. Treated as a resource you engineer, it becomes the biggest lever you have. From there the toolkit opens up. Repeatable work becomes a reusable Skill. Noisy, exploratory work goes to subagents that run in their own isolated context, several at once when the job allows. Hard rules become hooks the agent cannot cross. Your own systems come into reach through MCP.Then you let go of the wheel, carefully. The same agent that pairs with you can run headless in a pipeline, drive a long task to a defined finish on its own, or live inside your software through the Agent SDK. We close by setting two greenfield methodologies, Spec Kit and BMAD, side by side, so you leave knowing not just how to drive the agent but which approach fits which problem.Two ideas hold it together: context is king, and you push it, you own it. This was never about generating code faster. It's about staying in command while the agent does more.This is an advanced session for engineers, tech leads, and architects who already use Claude Code every day and want to reach the top of the curve. We move fast, and we start in the deep end.

Claude Code: Black Belt

Pawel Sawicki

In my work at MTN Irancell, we are building a Camunda-based workflow platform on top of bpmn-io Form-JS, a form engine that is rendered in Preact. The first time I had to bring a React component inside that Preact tree, it took me 2 weeks. I faced the famous "h is undefined" error one hundred times, two copies of React in memory, hooks failing, and re-render fights between Preact and React owning the same DOM. In this talk I will show the bridge I designed to solve all of this in production, with a live demo on stage where I mount a React component inside a Preact form engine in front of you.

How I Brought React Into a Preact Form Engine: A Production Bridge Pattern

Saman Abaasi

Your UI already knows how to fetch data, submit forms, and navigate - so why are AI agents still scraping your DOM? In this workshop you'll turn your React app into something AI agents can talk to directly - an MCP app. WebMCP is an emerging browser API protocol that lets web applications expose structured MCP tools directly to AI agents via navigator.modelContext. Instead of agents reverse-engineering your UI, they discover typed, documented functions - complete with JSON Schema inputs and structured responses. Basically, an MCP server running inside your web page. In this hands-on workshop, we'll take a real React application with GraphQL data fetching and progressively transform it into an agent-ready MCP app. You'll learn how to identify which parts of your UI to expose as tools, architect a clean WebMCP layer that doesn't pollute your existing codebase, and add imperative API calls that agents can invoke on demand. We'll cover the spec, the practical patterns, and the gotchas - and you'll leave with a working implementation you can apply to your own apps. No AI background required. If you build web apps, this is for you.

Transform Your React App Into an MCP App. Rebuilding UI for AI Agents.

Misha Kazakov

React Day Berlin

Take part in the exploration of the React universe! Focusing on in-depth talks, hands-on workshops, and developing new opportunities, the React Day Berlin conference provides space for everyone to make friends and collaborate on stellar apps.

React Day Berlin 2026

FocusReactive

Hygraph

Sentry

Porsche Digital

Grammarly

Sentry is essential for monitoring application code quality. From Error tracking to Performance monitoring, developers can see clearer, solve quicker, and learn continuously about their applications — from frontend to backend.&nbsp;

Porsche Digital is the technology unit of Porsche AG. We offer solutions that enrich the digital lives of our customers in and around the car.

Porsche Digital is the technology unit of Porsche AG

The world’s leading AI assistant for communication and productivity, trusted by over 30 million people and more than 70,000 professional teams.

FocusReactive is an&nbsp;<meta charset="utf-8" id="isPasted">engineering-led <a href="https://focusreactive.com/services/headless-cms-expert-agency/">Headless CMS Agency</a>&nbsp;and&nbsp;<a href="https://focusreactive.com/next-js-expert-agency/">NextJS&nbsp;development experts</a>. Independent partners of Payload CMS, Sanity, Storyblok, Vercel and Shopify. Delivering&nbsp;<meta charset="utf-8" id="isPasted">Composable content platforms built for AI SEO, growing teams, and marketing velocity.