Keynote Speaker, Web Developer, Author | Tejas Kumar20 years across fields like AI & Web Technologies.">20 years across fields like AI & Web Technologies.">20 years across fields like AI & Web Technologies.">I'm Tejas Kumar, and I've been building on the web for over 20 years at places like and more. I host a podcast. Where I talk to world experts in web engineering and do lectures. ✨ Search across all episodes with custom AI. Give it a try below. Here are some things people say about my podcast. Josh Goldberg 💖@JoshuaKGoldberg There have been too many people on ConTejas recently I really really want to hear from: @ladyleet, @alexnmoldovan, @MichelleBakels, @gabe_g2i... ugh. I'm getting FOMO from the last 2 weeks of just one podcast. You did this to me @tejask :( September 26, 2024View on 𝕏 → Michael Wheatfill@mwheatfill I love the long format Tejas. It kind of reminds me of the Lex Friedman of web dev focused podcasts. The thoughtful questions and depth of answers was awesome to experience. March 4, 2024View on 𝕏 → Guillermo Rauch@rauchg Had a great podcast with @tejask on: ◆ the physics of networks ◆ why move away from edge rendering ◆ fast vs slow global data transfer ◆ latency numbers every engineer (@jeffdean) and web engineer (@cramforce) should know ◆ RSC, PPR & Streaming Dropping soon! April 27, 2024View on 𝕏 → Shriram Balaji@shrirambalaji highly recommend watching this video, if you haven’t, definitely needs more views! https://youtu.be/G-Js3CcD000?si=ufrOBE58U9q3ISSh @tejask has the ability to break things down calmly, and explain how computers work - from subatomic particles, electricity, hardware, software, firmware to servers and more. March 13, 2024View on 𝕏 → Yoav Ganbar (🥑 Builder.io/Qwik)@HamatoYogi Just finished listening to @tejask's new podcast. The first one is jam packed with tons of knowledge and great insights on what's going on in the web and software in general. Awesome to hear him taking time to talk about @QwikDev especially 🙂 Highly recommend a listen 👌🏾 March 5, 2024View on 𝕏 → Atila Fassina@AtilaFassina This was one of the most fun conversations I’ve had in a long time! @tejask is a great podcast host and an even better conversation partner!! ❤️ March 15, 2024View on 𝕏 → I speak at conferences. I've given about 50 talks in recent times. Here are the 10 most recent. Invite me to speak at your event → RAG++ London 2024 React Rally 2024 CascadiaJS 2024 Pixel Pioneers 2024 JNation 2024 JS Heroes 2024 CityJS London 2024 React Paris 2024 React Day Berlin 2023 RenderATL 2023 ✨ Find answers across all of my talks with fine-tuned AI. Here are some things people say about my talks. Josh W. Comeau@JoshWComeau I’ve said it before, but @tejask has the most amazing energy when he speaks (and also in real life!). Amazing talk as usual about the tradeoffs React makes and why they’re really pretty good compromises. June 1, 2023View on 𝕏 → Mark Dalgleish@markdalgleish .@tejask is such a charismatic speaker. October 20, 2023View on 𝕏 → David K 🎹@davidkpiano Whenever @tejask live codes in a presentation, it's absolutely stunning. Feels like he can turn almost anything into a 2-minute demo. May 7, 2022View on 𝕏 → Cassidy@cassidoo This talk by @tejask is so inspiring. He’s got hemophilia, and he built an app that has a data visualization of the half life of his medicine! #DinoJS June 20, 2019View on 𝕏 → Francesco@FrancescoCiull4 I met Tejas Kumar !!!! An amazing speaker and a super friendly, funny person in real life! Thanks for wearing my sticker @tejask!! November 20, 2022View on 𝕏 → swyx@swyx dude. i wish i had your energy, technical, and speaking skills! I dont know how you do it. September 26, 2019View on 𝕏 → If you'd like me to speak at your event, please contact me below. I wrote a book. This book is a deep dive on how React works on the inside that can help you understand its internal mechanisms more deeply and unlock greater levels of fluency. It was curated by me, published by O'Reilly, and thoroughly reviewed a number of peers including the React core, experts, friends, and more. Buy Here are things people say about this book. Una 🇺🇦@Una I think I need to read @tejask's new book 😅 Great talk about optimizing React w/useDefferedValue and useTransition at #ReactParis March 22, 2024View on 𝕏 → Michelle Bakels@MichelleBakels I got dropped into web dev via corporate mandate 6 yrs ago, so I love that Fluent React begins by outlining the ecosystem of the time — something I was largely disconnected from. This context has helped me appreciate everything I’ve learned so much more. @tejask 🙏 March 23, 2024View on 𝕏 → Daniel Afonso@danieljcafonso Fluent React is #1 best selling. As it should be 😁 March 23, 2024View on 𝕏 → Amanda 🌿@hey_amandam V excited for this. As someone who has used React for years but never as my only focus, it will be interesting to see how this deepens knowledge for me I'm a huge fan of @tejask as a person and enjoy his teaching style so I expect to feel more of that same vibe in this book March 14, 2024View on 𝕏 → Nisarg Parikh@nisargparikh90 Fluent React by @tejask is an amazing book. Learning React by reading a book is a completely new experience. March 7, 2024View on 𝕏 → Josh W. Comeau@JoshWComeau Tejas previewed some of his book in his React Paris talk and it's seriously great. Goes deep into advanced topics. Just picked up a copy for myself 😄 March 23, 2024View on 𝕏 → ✨ Using AI, answer any question from the book. I write a blog. I don't presume to have anything profound to say, but here are some thoughts. Jul 8, 2026 Frontier Models Suck Sometimes (A Benchmark) I needed to summarize a conversation and find the best model for the job. Dec 28, 2024 Biggest Lessons of 2024: Honor, Trauma, and People Dissecting honor, what it takes to overcome trauma, how to heal from the fear of failure and prioritize relationships. Dec 22, 2024 It's Okay to Code on Nights and Weekends Rethinking the balance between coding passion, life, and maintaining healthy boundaries. Nov 28, 2024 How to Grow Professional Relationships A practical, science-backed model for growing quality professional relationships. Sep 3, 2022 Health, Fitness, DevRel, and Hemophilia A deeply personal post about my health journey and how it's affected my fitness, devrel work, and more. Mar 10, 2022 Pillars of Impact for Web Engineers A blog post about impact web engineers can have and how they can grow it over time. Jan 11, 2021 Goodbye Facebook Why I'm deleting my Facebook, Instagram and WhatsApp accounts at the end of the month. Jan 1, 2021 2020 in Review: Still Thankful A look back at the weirdest year I've lived yet. Mar 16, 2020 Why I Don't Prefer Speaking at Remote Conferences A blog post about why I don't prefer speaking at remote conferences. Jan 27, 2020 Why I Think Remote Work is Incredible A blog post about why I think remote work is incredible. Jan 20, 2020 5 things I love about my website (and how they're built) A blog post about 5 things I love about my website and how they're built. Jan 15, 2020 What I Learned From Getting Pushed Off My Bicycle A blog post about things I learned after being randomly attacked on the streets of Berlin when a stranger pushed me off my bicycle. Jan 13, 2020 Hello World A blog post about why I started this blog. ✨ Using AI, answer any question from the blog.