JavaScript experts, mentors, speakers
Explore personalities and their talks, workshops, videos, and articles. While we focus primarily on JavaScript and frameworks like React, Vue, Svelte, and Node, you may find experts on other fields on our Portal. To name a few – Testing, DevOps, Machine Learning, and many more!

Sahar Pournasseh
Gearback, Iran
Sahar is a software developer and a game enthusiast. She has been developing in the web and mobile platforms for years, but her childhood passion for games and gaming brought her to the game industry and her experience with web and mobile platforms gave her more insight to become an indie game dev. Starting with JavaScript web games made this passion burn brighter and she's been creating games ever since, working with different engines and experimenting with creating multiplayer and single player games.

Daniel Irvine
Concisely Crafted, UK
Daniel Irvine is a soft ware consultant based in London. He works with a variety of languages including JavaScript and Ruby. He’s a mentor and coach for junior developers and runs TDD and XP workshops and courses. When he’s not working, he spends time cooking and practicing yoga. He co-founded the Queer Code London meetup and is an active member of the European software craft community.

Yonatan Mevorach
Wix, Israel
Yonatan is a Team Lead at the Infra group at Wix.com, where he is able to make his love for creating developer tools a part of his daily work. He also enjoys working on open-source developer tools, and blogs about them at blog.yonatan.dev.

Tiger Oakes
Microsoft, USA
After growing up with dead zones in Hawaii, Tiger wants to make apps that work offline and load fast. Today, he programs web apps as a senior engineer at Microsoft. Tiger is an enthusiastic member of the W3C working on new standards for the web, and has previously worked on Microsoft Edge, Firefox for Android, and Google Chrome. He creates art projects out of old devices, including junk phone wall decor and an e-reader tea menu. In his spare time, Tiger performs improv with his wife.

David Leitner
SQUER, Austria
David is Chief Technologist at SQUER, a Software Company based in Munich and Vienna, working with different stacks and environments but always an overarching mission: connect ideas and provide impact — with technology. He spends much of his time on the frontlines tackling the challenges of scaling software and complex domains, with a strong focus on cloud-native architectures and infrastructures. David enjoys sharing his knowledge as a conference speaker and lecturer for his post-diploma courses at the University of Applied Sciences Technikum Vienna.
Bruno Paulino
N26, Austria
Bruno is a passionate Software Engineer who loves crafting solutions that can help ease our lives and make it more fun. He is mainly interested in Web development, currently working with TypeScript, Elixir and React.

Yuraima Estevez
Shopify, USA
Yuraima Estevez is Frontend Development Manager at Shopify. She cares deeply about building open source tools, teaches developers how to create inclusive apps, and is a co-organizer for the useReactNYC meetup. Her superpower is saying hello to every dog she sees, and her current obsession is her Stardew Valley farm.

Hung Nguyen
Full-time Open Source Contributor, Vietnam
Hung Nguyen is a full-time Open Source Contributor. He loves to help others with his software. He is obsessed with Developer Experience (DX). So he created jest-preview to help frontend engineers to write and debug Jest tests effortlessly. He is also a core member of bestofjs.org, a curated list of Javascript packages, which helps you to follow the growth of the Javascript ecosystem.

Vitor Alencar
Chilipiper, Berlin
Senior Web Developer & Engineering Manager based in Berlin with over 12 years of hands-on experience. I’m passionate about teaching and sharing knowledge—producing video tutorials and leading code courses at top programming schools. In my free time, I give back to the open-source community by maintaining projects like redux-offline, dracula-ui and clipboard.js,

Iris Schaffer
Spotify, UK
Iris is a front end developer with a passion for user experience and design, currently building products at Spotify. She’s also engaged in the Swedish meetup scene where she co-organises a ReasonML meetup.

Matheus Guimaraes
Amazon Web Services (AWS), UK
Matheus Guimaraes (@codingmatheus) is a digital transformation specialist focused on AI adoption and microservices architecture. An international keynote speaker with over 20 years in tech, he’s worn many hats, from junior game programmer to CTO and tech co-founder. Matheus has helped companies of all sizes modernize and scale their systems, leading transformation programs and designing cloud-native, AI-ready architectures. Today, he shares his expertise globally through talks, blogs, and videos, passionate about helping others grow in the industry. Outside his professional life, he’s a gamer, swimmer, musician, and firm believer in the powerful intersection of creativity and technology.

Kaleb McKelvey
Netflix, USA
I'm a frequent traveler, too much coffee drinker, and a constant Reddit lurker. Since Diablo 1 piqued my interest in learning how to program, I've been on a mission to continuously grow through my career and personal experiences as a Software Engineer. I hope to share the things I learn with the world!

Jorge Rubiano
Huge, Colombia
Hi! I'm Jorge Rubiano, a passionate developer with several years of experience in the programming world. Throughout my career, I've discovered that one of the best ways to learn and teach is through personal projects, and in my case, games have been my greatest source of inspiration.
I love immersing myself in game development because not only are they fun, but they also provide a valuable opportunity to learn new technologies and concepts. Each game I create challenges me to explore and master emerging technologies, from frameworks to libraries, and even design concepts and game logic.

John Nguyen
Fullstack Engineer, Germany
My name is John Nguyen. I was born and raised in Berlin and I am currently working as a freelance Fullstack Engineer. I started my career in web development in 2013 with the LAMP stack and mainly used jQuery for a long time. Later, I got dragged into companies cloud migration where learned Serverless development, CI/CD pipelines and DevOps methods.
Fast forward to now, and I am a Fullstack Engineer with expertise in Cloud Engineering on AWS, Platform Engineering, and Fullstack Development.

Adam Klein
Covver, Israel
Adam is the CTO of Covver, a platform for corporate branded gift experiences. He brings over 20 years of experience build software applications and software architecture, and solving challenging problems. He's a web GDE, and an author of open source libraries.

Nicolas Dubien
Pigment, France
Nicolas is a developer at Pigment. He is the author and main contributor of the JavaScript open source library fast-check.

Adam L Barrett
NRWL, Canada
Adam L Barrett is a JavaScript and Front-End consultant, a contributor to open source, and avid bike-shedder. Adam believes, when writing conference bios, he should probably mention his two children, his love of movies and probably his hobbies, like hosting a board game podcast, to help the reader connect with him as a person, but ...well, that sounds sort of manipulative so Adam has chosen not to. Adam is above that.

Nikhil Kumaran S
Cloudera, India
Hi, I'm Nikhil Kumaran S, Frontend developer with expertise in Reactjs. I currently work at Cloudera. I have a passion for knowledge sharing. I share my knowledge by writing blog posts, giving tech talks at conferences, and mentoring people on Frontend development.

Yuma Heymans
HeroHunt.ai, United States / Netherlands
Yuma is the co-founder of HeroHunt.ai (the creator of AI Recruiter Uwi) and a thought leader on AI agents.
Yuma is very bullish on building the new software revolution of completely autonomous agents who can work for companies on complete autopilot with a mental model of AI teams.
Carly Richmond
Elastic, UK
Carly is Developer Advocate Lead at Elastic, based in London, UK. Before joining Elastic in 2022, she spent over 10 years working as a technologist at a large investment bank, specialising in front-end web development and agility. She is a UI developer, who occasionally dabbles in writing backend services, a speaker and a regular blogger. She enjoys cooking, photography, drinking tea, and chasing after her young son in her spare time.

Mettin Parzinski
Miro, Netherlands
Father, husband, squash player, quite bad at chess, metalhead, aspiring woodworker. Working in the developer experience team at Miro to enable other developers to create awesome plugins for Miro boards.

Siriwat (Jun) Kunaporn
MUI, Thailand
Jun is a Software Engineer at MUI, where he works on Joy UI and improves the developer experience. He enjoys coffee in the morning and watching series in his free time.

Nathan Shively-Sanders
Microsoft, USA
Nathan is an engineer on the Typescript team, working on Javascript support and open source community, including Definitely Typed. He has a Ph D in linguistics from the time he made a machine classify Swedish dialects using syntax. The common thread is that Nathan loves writing programs to understand messy linguistic systems.
For fun, Nathan enjoys video games, a wide variety of reading, and hiking with his family around the Pacific Northwest.

Kamran Ayub
Kamranicus, USA
Kamran is a DevEd consultant who helps developer marketers create lean, mean lead-generating content cuisine. He writes about how to avoid fast food developer content marketing in his DevEd Test Kitchen newsletter and hosts DevEducate, a podcast about creating remarkable developer learning experiences. You can learn more at https://deved.love.