React Day Berlin 2026

Kitze loves to rant about webdev. He is the founder Sizzy - the browser for developers. He created React Academy to teach web development. He's the creator of Zero To Shipped - the interactive video course for mastering Fullstack Development. He's documenting his journey on YouTube, steams on Twitch and has a blog that he maintains one in a blue moon. He made Benji, Twizzy, ok-google.io, JSUI, Glink, showGPT and etc.

Tejas Kumar is an international keynote speaker, best selling author, and host of the developer-loved ConTejas Code podcast with an engineering background spanning 23 years, from design to frontend to backend to devops. Today, Tejas shares talks at large with developer communities worldwide, equipping them to do their best work.

Sara is a developer relations engineer at Orama. Author of The Opinionated Guide to React. Open Source enthusiast. Conference Speaker. Talk to her about Retro Games or Airports.

CTO at Callstack. Passionate about cross-platform technologies. When not working, you can find him on a race track.

Brad Westfall has been teaching Web Development since 2010 including bootcamp instruction, online videos, conference speaking, writing at CSS-Tricks.com, and corporate training for ReactTraining.com. He loves to connect with students by helping them achieve their technical goals and by distilling complex concepts into simple instruction.

Barcelona-based engineer with a Political Science background and a lifelong passion for automation. 13+ years in the game. I started by founding a remote startup, then moved through teams of every size. I thrive on complex problems. I ship at the highest standard and build for growth. AI is a multiplier in my toolkit, not a crutch. I give back through open source, conferences, and mentoring. Knowing when to move fast and when to get it right is the skill behind every other skill. Great software lives at the intersection of ambition and pragmatism.

I am Saman Abaasi, a Frontend Engineer from Tehran, Iran, with more than 7 years of experience working with React and TypeScript. I am currently a Staff Frontend Engineer and Squad Lead at MTN Irancell, where I lead a small team building a Camunda-based workflow platform that is replacing a long-running Huawei OWS production system. Before MTN I was a Senior Frontend Engineer at Digikala, Iran's largest e-commerce platform, leading UIKit development across 60+ components. I spend my free time reading source code and writing about it. I have published three in-depth technical series: "How JavaScript Works" (10 parts), "How React Works Under the Hood" (9 parts, source-verified against React's internals), and a 23-part series on extending bpmn-io form-js in production. Published on dev.to, JavaScript in Plain English, and StackAcademia. I am an invited speaker at React Day Berlin 2026 (December 4 & 7, GitNation), where this will be my first conference talk.