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!

Vasilika Klimova
Cute Geek, Luxembourg
14+ years Software Engineer with diverse experience in Frontend, Fullstack, 3D, and blockchain, now focusing more on helping businesses grow and connect with their audience. Love smooth UIs with clear infographics and mind-blowing 3D effects. As an active community member, I've organised meetups, conferences and currently organising Lux Tech Pulse events. Recognised as a Google Developer Expert in Web and Microsoft Valuable Professional in development and security, I've also taught at various web schools. Beyond tech, I'm passionate about travelling, diving, gaming, cinema, and animals.

Kevin Whinnery
Deno, USA
Kevin Whinnery is the Head of Developer Relations for Deno, the new TypeScript and JavaScript runtime from the creator of Node.js. Kevin is a long-time web developer, teacher, and author to a number of successful open source projects like the twilio-node module, TerminalQuest, and several others best left in the dustbin of history (unless you need a SOAP API client). Kevin lives just outside Minneapolis, MN, where he will gladly point you to your favorite local cuisine upon request.

JJ Kasper
Vercel, USA
JJ Kasper has spent the last six years working on Next.js at Vercel, working to build a better web. Passionate about open source and improving developer and user experiences, JJ enjoys building tools that make shipping great apps easier and faster. He's originally from Kansas but currently loving living in the bay area surrounded by amazing builders.

Nadia Makarevich
DeveloperWay, Australia
Nadia is a Frontend Architect, experienced coder and tech blogger. She loves debugging mysterious bugs, solving hard problems with simple solutions and writing articles, that make complicated advanced concepts easy to understand. She managed to escape from locked down Australia in the middle of the global pandemic and now enjoys the life of a digital nomad all over the world.

Chakit Arora
Storyblok, India
Chakit is a Full Stack Developer based in India, he is passionate about the web and likes to be involved in the community.
He is a Twitter space host, who likes to talk and write about technology. He is always excited to try out new technologies and frameworks.
He works as a Solutions Engineer at Storyblok.

Hidde de Vries
Web Standards Specialist, Netherlands
Hidde is a front-end, design systems and accessibility specialist (CPWA). He is also involved in the W3C’s Open UI Community Group, Web Sustainability Interest Group and Accessibility Guidelines Working Group. He strongly believes in a web that puts people first. Hidde writes about these things and more on hidde.blog. In his free time, he works on a coffee table book covering the video conferencing applications of our decade.

Jo Franchetti
Deno, UK
Jo is an Engineer at Deno. She is passionate about improving developer experience, advocating for TypeScript and teaching good use of the web. She mentors junior developers, advocates a lot for mental health awareness and is devoted to improving the diversity and inclusivity of the tech industry.

David Whitney
Electric Head Software, UK
David is the founder of Electric Head Software, working as an independent software consultant based in London focusing on iterative software delivery, developer mentoring and cultural change - mostly working with London-based organisations and start-ups. David has previously served as the chief coding technical architect for JustGiving, and helped market-leading organisations including JUST-EAT, Trainline and Vodafone improve their technical capabilities.

Tara Z. Manicsic
Netlify, USA
Tara Z. Manicsic has spent her career using JavaScript on both back-end and front-end to try to help make coding the web a happy place for devs. She is currently working to bring Angular into the Jamstack at Netlify as a Developer Experience Engineer. As an international technical speaker and workshop leader, she conveys all she has learned while delivering horrible jokes. Tara is a lifelong student, teacher, and maker (crafts, IoT projects, tiny humans, and more). She lives in a house down by the river and hopes to meet you soon!

Tsahi Levent-Levi
Spearline, Israel
I am Tsahi Levent-Levi. The person behind BlogGeek.me and Chief Product Officer at Spearline. My blog focuses on rumblings about technology usually boiling down to WebRTC, CPaaS, Messaging, Disruption and other topics (Science Fiction anyone?) To put food on the table, I also consult in these domains, publish my own reports and run a WebRTC training.
During the past decade (and then some) I have taken part in the development of various telecommunication projects - mainly those related to VoIP and 3G. I've done so as a programmer, manager, marketer and CTO. This included developing the 3G-324M protocol stack from scratch, as well as managing the team that was in charge of developing and maintaining the H.323 protocol stack, along with other interesting projects.
I was the cofounder and CEO of testRTC, a self service SaaS company focused on testing, monitoring and support for WebRTC applications. In 2021, we sold the company to Spearline.
These days I am working as a consultant, analyst and entrepreneur on anything related to VoIP, but it mainly focuses on CPaaS, WebRTC and their potential for disruption.
I have an MSc in Computer Science and an MBA degree with a focus in Entrepreneurship and Strategy. Included in my resume are a few patents and being the chairman of different activity groups in the IMTC – an organization focused on interoperability of multimedia standards.
You can use the social media links to reach me or learn more about what I do and where.

Rafael Gonzaga
NearForm, Brazil
Rafael is a Staff Engineer at NearForm, working full-time on the Node.js runtime as a TSC (Technical Steering Committee) member, especially in the security working group.
He's also the maintainer of popular JavaScript libraries such as Fastify and Clinic.js, and he's specialized in performance enhancements and software architecture optimization.

Deepu K Sasidharan
Okta, Netherlands
Deepu K Sasidharan is a Software Engineer by passion and profession. He is a Senior Developer Advocate at Okta. He is the co-lead of JHipster, and the creator of KDash and JDL Studio. He is a polyglot programmer working with Java, JavaScript, Go, Rust, and so on. He is also a cloud technology advocate and an open-source software aficionado. He has authored books on Full-stack development and frequently writes about Java, JavaScript, Go, Rust, DevOps, Kubernetes, Linux, and so on, on his blog.

Sudhanshu Yadav
Prophecy, India
Architect at Prophecy, Ex HackerRank. A JavaScript and React fan, with a deep interest on internals and making theories on how things work. Have authored BrahmosJS, react-number-format, packagebind and several other OSS tools. Also, runs a meet-up group to discuss internals of different tech stack.








