JavaScript experts, mentors, speakers

Dan Vanderkam is the author of Effective TypeScript (O'Reilly 2019) and a Principal Software Engineer at Sidewalk Labs. He previously worked on open source genome visualizations at Mt. Sinai's Icahn School of Medicine and on search features used by billions of users at Google (try "population of france" or "sunset nyc"). He has a long history of working on open source projects, including the popular dygraphs library and source-map-explorer, a tool for visualizing JavaScript code size. He is also a co-founder of the NYC TypeScript meetup and blogs at effectivetypescript.com. When he's not programming, Dan enjoys playing bridge and climbing rocks near his home in New York's Hudson Valley.

Filip Hric is a DevRel at Replay.io He teaches testers about web development and developers about testing. Filip has a Cypress.io ambassador, leads a “Learn Cypress.io” community on Discord and has a blog at filiphric.com where he publishes Cypress.io tips. He’s an international keynote speaker and leading expert on test automation in Cypress.io. As author and instructor of live Cypress workshop, he has taught hundreds of testers and developers about good practices and advanced concepts for testing in Cypress. Enjoys running, playing guitar and spending time with his wife and four children.

David Mytton is currently building Arcjet, a product to help developers protect their apps. He also writes the console.dev weekly devtools newsletter which reviews the most interesting tools for developers. In addition, David is pursuing a PhD in engineering science & sustainable computing at the University of Oxford. In the past, he co-founded Server Density, a cloud infrastructure monitoring startup which was acquired in 2018 by edge computing platform, StackPath.

Now part of the MongoDB Developer Tools team, Anna has been one of the most active contributors to Node.js core over the last 4 years. She is fueled by a passion for Node.js and its community.

Michael is a full-stack web developer, passionate about testing from Kyiv, Ukraine. I also work as a consultant & trainer focused on testing. Michael works on open-source product CodeceptJS with a goal to bring a better testing experience to developers. Making testing as easy and as joyful as it could be is his motto.

Slobodan Stojanović is CTO of Cloud Horizon, a software development studio based in Montreal Canada, and CTO of Vacation Tracker, a simple Slack-based leave management system for teams. He is based in Belgrade and is the JS Belgrade meetup co-organizer. Slobodan is the AWS Serverless Hero, Claudia.js core team member, and co-author of “Serverless Applications with Node.js” book, published by Manning Publications.

Passionate software engineer with expertise in software development, microservice architecture, and cloud infrastructure. On daily basis, I use Node.js, TypeScript, Golang, and DevOps best practices to build a better tech world by contributing to open source projects.

I’m Theodore, a software engineer, educator and speaker based in Athens, Greece. I’m currently working as an independent engineer, helping companies build and promote their products. In the meantime, I’m also developing Proxima Analytics - an open source, privacy-first analytics platform.

Jimmy is a Software Engineer at Vercel living in Munich, Germany. Previously at Meta, where he worked on web perf and React Native, he's currently in the Next.js team, working again on performance and other things.

Hi, I'm a tech lead at BAM where I've been developing React Native apps for 8 years. My obsession is mobile apps performance 🚀. I truly believe it's our responsibility to develop performant apps, as one way to fight against climate change!

Matt Carroll works as a developer advocate on the React team at Meta. He is currently focused on collaborations with the community and server components. Before Meta, Matt worked in developer relations at Google.

Alejandro has been involved with the Node.js project and its community for some time, helping to grow its community in latam. He enjoys speaking on web security, Node.js performance and serverless.

Jamie is a hobbyist cross-platform developer who likes exploring how we can make native app development more like web development.

Member of the Node.js Technical Steering Committee & a hapi core team member. Colin Ihrig is a software engineer working primarily with Node.js. He is the author of Pro Node.js for Developers, and co-author of Full Stack JavaScript Development with MEAN.

A Senior Software Engineer at SigTech, Akash is a self-taught programmer who started his journey from playing video games to developing them. Spending the last year building software at Meta, he's now helping build apps at a rapid speed through the power of React and Typescript.

Prismic founder & CEO; Co-creator of Play web framework. He enjoys connecting business, marketing, software architecture and code.

Tiffany Jachja is a technical evangelist at Harness. She is an advocate for better software delivery, sharing applicable practices, stories, and content around modern technologies. Before joining Harness, Tiffany was a consultant with Red Hat's Consulting practice. There she used her experience to help customers build their software applications living in the cloud.

Among the different things that Facundo enjoys, some of them are meeting and connecting with other people, web development, and talking a lot. After more than 12 years working as a developer, creating products and projects for different organizations and clients, he thought it would be great to combine those three interests in some way. In his search of ways to handle that, he discovered the world of Developer Relations. Nowadays, Facundo works as a DevRel Engineer at Storyblok, and he spends his time engaging with the dev community, speaking at events and conferences, creating and sharing content, writing articles for different websites and platforms, leading workshops, and talking (of course). He is one of the organizers of React Buenos Aires, the biggest React community in Argentina. He has been selected Prisma Ambassador, Auth0 Ambassador, and Cloudinary Media Developer Expert.

Justin is the creator of [FormKit](https://formkit.com/), [ArrowJS](https://arrow-js.com), [AutoAnimate](https://auto-animate.formkit.com/), and [VueFormulate](https://vueformulate.com/). When he’s not working on open-source, Justin is a devoted husband, father of three boys, and connoisseur of all things aviation.

Andrew joined the TypeScript team at Microsoft in 2019. As a former frontend developer, one day he looked too closely at the differences between Node and bundlers and has been falling down the rabbit hole of JavaScript modules ever since. He's currently on a quixotic mission to fix every npm package with arethetypeswrong.github.io—or at least fix a few while leaving behind some good documentation.

Cedric is an engineer at Expo, primarily focusing on devtooling and developer experience. If you interacted with the Expo CLI, tried to set up a monorepo, used the Expo Tools vscode extension, tried out a Snack, or found Expo Atlas, you've already used some of his work.

William Lyon is a Developer Relations Engineer at Neo4j where he helps developers be successful with graphs. Prior to joining Neo4j William worked as a software developer for several startups, building mobile apps, quantitative finance tools, and predictive API services. William holds a Masters degree in Computer Science from the University of Montana and is the author of the book "Full Stack GraphQL" published by Manning. You can find him online at [lyonwj.com](http://lyonwj.com/).

Developer Advocate @Microsoft, Google Developer Expert in Flutter & Dart with 14 years of experience in Web Technologies, Android, Flutter, HarmonyOS and Microsoft M365. I have worked for multinational firms in India, the Netherlands, and the USA. I am a Women Techmakers Ambassador!, Youtuber (whatsupcoders), Mentor @MentorCruise, and Open-Source Community Builder.

Development Manager on the Retail Dev Accelerate team.