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!

Thomas Hunter II
Lob.com, USA
Thomas has contributed to dozens of enterprise Node.js services and has worked for a company dedicated to securing Node.js. He has spoken at several conferences on Node.js and JavaScript, is an O'Reilly published author (Distributed Systems with Node.js ), and is an organizer of NodeSchool SF.

Nico Martin
Aity AG, Switzerland
Nico Martin is a self-taught web-developer and Google Developer Expert in Web Technologies and AI/ML from Switzerland.
Creative coding and testing the limits of the browser has always been his passion. And he shares this enthusiasm whenever possible in workshops, articles or talks.

Júlio de Lima
CAPCO, USA
Júlio de Lima is a specialist in Software Testing with 13 years of experience. Júlio has a Bachelor's Degree in Software Engineering, a specialization in Teaching in Higher Education and a Master's Degree in Electrical and Computational Engineering with a focus on Testing and Artificial Intelligence. He currently lives in Orlando, Florida. He serves as Principal QA Engineer at Capco, helping financial institutions establish robust and sustainable testing strategies. He uses his coding and architecture skills to contribute to software quality at all system layers. Júlio has contributed to the software testing community through his channels on YouTube, Instagram, Spotify, and in articles for technical and scientific magazines. He has experience as a speaker at international events and has trained more than 9,000 students through his online training in Portuguese.

Kathryn Grayson Nanz
Progress Software, USA
In 2013, I graduated with a BFA and took my first job as a Junior Graphic Designer at a small, boutique ad agency. While there, my Creative Director warned me to never let anyone find out I could code, because if I did I'd be stuck doing it forever. I ignored his warning; it turns out he was completely right, but I've never been happier. I currently work as a developer advocate on a wonderful team where I help people build web applications in React, design and maintain their UI component libraries, and desperately attempt to stop back-end devs from writing any more CSS.

Marius Obert
Twilio, Germany
Marius is a Developer Evangelist at Twilio with a passion for exploring and sharing the latest in communication tech. He started as a UI developer in Silicon Valley, fell in love with JavaScript, and never looked back. Now based in Munich, he helps developers build cloud-native apps that redefine customer engagement. When he's not coding or speaking at events, you'll find him tinkering with Web 3.0 or dreaming up the next big prototype.

Negar Jamalifard
Lightspeed Commerce, Canada
Negar is a senior software developer at Lightspeed Commerce, based in Montreal, Canada, with a focus on frontend development. With expertise in React, Vue, and a passion for CSS and web styling, she excels at simplifying complex concepts to make them accessible to all.

Pablo Postigo
Frontity, Spain
Software Engineer, entrepreneur and foodie. Born and raised in Madrid, Spain. Pablo and his team are on a mission to make building delightful user experiences universally accessible. He founded Frontity in 2015, has raised 1.5M€ in funding and since June 2019, Frontity became a 100% open-source project after releasing their framework for building lighting sites using React and WordPress.

Lukas Taegert-Atkinson
TNG Technology Consulting GmbH, Germany
Current maintainer of RollupJS.
After finishing my PhD studying the mathematical properties of black holes, I decided to go for less substance from then on and follow my passion of becoming a professional software developer. For the last six years, I have been doing full-stack consulting work for various clients at TNG Technology Consulting GmbH. This includes a big focus on DevOps: tuning Node servers, tending to Kubernetes clusters and orchestrating CI/CD pipelines are an important part my work.
During this time, I also stumbled upon RollupJS, and while I originally only wanted to push a few improvements to their dead code elimination algorithm, I ended up rewriting it from the ground up. And in the process, I accidentally became acting maintainer of that project :)
Since 2017 I have been continuously working on further improving tree-shaking, adding code-splitting together with Guy Bedford, and many other things to make it a great tool not only for optimizing JavaScript libraries but also for advanced and custom build processes at big companies like Github, Bloomberg, Salesforce and many others.

Andrei Calazans
G2i, Brazil
I'm a Software Developer with an emphasis on a JavaScript Stack(React, React Native, GraphQL, Relay, Apollo, Redux, Redux-Saga, and others). Over the past years, I've worked mostly with Front-End applications, but I have done Back-End work with GraphQL JS. Despite starting my career on the Web, I have been working with Mobile applications for quite some time. Due to working on cross-platform solutions like React Native, I have some experience writing Swift, Objective-C, Java, and C++. I cherish good communication and respect. I also have some of those cliche skills = ) Fast learner and a good communicator. Besides Software Development, I like writing, learning about emotions, and philosophy.

Fabien Vauchelles
Wiremind, France
Fabien Vauchelles is the Anti-Ban Expert at Wiremind. With over a decade of experience in web scraping, Fabien's passion for code and technology helps him to bypass bans. He is the creator of Scrapoxy, an opensource proxy aggregator for webscraping.
He had the opportunity to speak at Devoxx FR, Zyte’s Extract Summit and Voxxed Days.

Daniel Norman
Interplanetary Shipyard, Germany
Daniel is a software developer and developer advocate for the IPFS and libp2p projects who brings over a decade of experience with the Web stack and distributed systems. He's passionate about open-source culture, developer tools, and the Web Platform, and enjoys applying insights from various disciplines to software development.

Anton Nemtsev
Datasnipper, Amsterdam, Netherlands, Noord-Holland
- 24 years of frontend development. I did see Browser Wars. And mammoths.
- Independent developer for 16 years. Sold out to corporations.
- Jack of all trades, master of none. More of the last part.
- Founder and chief-editor of the Frontender Magazine. Failed miserably.
- Speaker at international and local conferences. The further the local.
- UA Web Challenge expert. Ex.
- Head of the frontend department of the Ukraine online university "Projector". Ex.
- Magical talking bear prostitute.

Stacy Cashmore
Omniplan, Netherlands
Speaker, author and software developer. Stacy has been developing solutions since the mid-1990s in various industries ranging from facilitating contract jobbing to allowing consumers to close a mortgage without the help of a financial adviser – with lots in between.
She has a passion for sharing knowledge: using storytelling to share her experiences to help teams grow in the ways that they develop software and work together, and performing live coding demonstrations to inspire others to try new technologies.
In 2022 Stacy released her first book, aimed at helping developers get started building dynamic applications using C#, Azure Functions and Azure Static Web Apps.
For her effort in the community, Stacy has been awarded the Microsoft MVP for Developer Technologies since 2020.

Laura Durieux
Inside Software & Streamer, Belgium
A graduate in Web Design and Development from the Haute École Albert Jacquard in Belgium, Laura earned a gold medal in 2021, proudly representing Belgium at EuroSkills Graz 2021 in Web Technologies. Laura has been on a computer since the age of 6, always knowing that tech was her domain. Today, she works as a Full-Stack developer and consultant at Inside Software in the medical field. For the past year, she has been streaming web development on Twitch and hosting the show 'On est pas des iencli' on RTBF iXPÉ, the Belgian national media. Since her first conference in May 2023, Laura aspires to continue sharing her experience and knowledge through public speaking engagements.

Andre Landgraf
Neon, USA
Andre is a passionate developer from Germany who loves building for the web. Based in the Bay Area, he is a Senior Developer Advocate at Neon and the author of Full Stack Web Development with Remix. He was previously a Senior Software Engineer at LinkedIn and holds master’s degrees in Information Systems and Computer Science. In his free time, he brings the community together through All Things Web events in San Francisco.

Eunjae Lee
cal.com, France
Eunjae is a software developer born and raised in Korea. He moved to France in 2019. He has worked at Algolia and Storyblok, and is now at cal.com. He has worked on projects with a big focus on developer experience, developer tools, and everything that makes our lives less painful. He lives in a small town near Paris with his wife and two cats, growing veggies on the balcony.

Samuel Snopko
Storyblok, Slovakia
Samuel is responsible for the developer relations at Storyblok. As the headless system's head of devrel, he spends most of his time buried in the documentation and creating various experiments and demos. He always defines himself as Creative FrontEnd Knight & DesignOps enthusiast with a passion for JAMStack and the beautiful web. As a determined community believer, he co-created multiple meetups and is always happy to help any community in need.