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!

Vanessa Raath
The Talent Hunter, South Africa
Vanessa is globally renowned for her contributions to the international Sourcing Community. She has delivered keynotes across three continents and trained teams from Auckland to Seattle.
Vanessa launched her Talent Sourcing Training business in early 2019 and has not looked back. She is a qualified teacher with experience in agency recruiting and internal talent acquisition (she loved both roles!). She now gets to combine her love of empowering others to do better, with her passion for recruiting through her own Online Academy.
She loves it when her training delegates experience that ‘light bulb’ moment as she knows that she has just changed someone’s career, for the better.
When Vanessa is not doing research for her training, recording content, or delivering a Keynote, you can find her at the Beach or in the South African Bushveld, taking photographs.

Aleksandra Sikora
EdgeDB, Poland
Aleksandra is a full-stack engineer currently working on developer experience at EdgeDB. Previously a tech lead for the Hasura Console and a lead maintainer of Blitz.js. Deeply passionate about open-source, TypeScript and dedicated to staying up to date with the JavaScript ecosystem. In love with all things climbing — hiking, via ferratas, rock climbing.

Alexander Granin
Freelancer, UAE
Mentorship available
I am a book author, international speaker, researcher, software architect, and seasoned software engineer. I am a recognized figure within the Haskell community, renowned for pioneering ideas in the world of functional programming. I have authored two books: "Functional Design and Architecture" (in two editions) and am currently working on my third book, "Pragmatic Type-Level Design." Additionally, I have created my own development methodology known as Functional Declarative Design, serving as a counterpart to Object-Oriented Design.
With over 14 years of experience across various programming stacks, including C++, Haskell, C#, and Python, I have traversed the full spectrum of roles, progressing from a regular developer to a software architect and team lead.
I have previously served as a member of program committees for C++ conferences, including C++ Siberia and C++ Russia. I was working with the speakers all around the world to help them prepare their talks and to make their participation in the conferences smooth and joyful.
As a seasoned speaker, I have delivered more than 20 talks at both local and international conferences, including a keynote presentation on functional C++. My personal mission revolves around providing practical insights into constructing industrial-grade applications using concepts from functional programming.
Jon Meyers
Supabase, Australia
Jon Meyers is a Software Engineer, Educator and Hip Hop Producer from Melbourne, Australia. He's passionate about web development and enabling others to build amazing things! He is currently working as a Developer Advocate at Supabase, showing just how awesome databases can be!

Pachi Parra
Abacate DevRel, Brazil
Pachi is a front-end dev turned DevRel. She a Co-Founder of Feministech, a community for Brazilian women and non-binary people in tech.
When she's not engaging on Twitter or streaming on Twitch, Pachi watches anime, reads too many romance novels, and Hypes people on the internet like that is her job.

Phil Nash
-, Melbourne, Australia
Phil is a developer relations engineer, Google Developer Expert and AAIF Ambassador living in Melbourne, Australia. He's been working in developer relations for a decade, speaking at conferences since 2012, and writing JavaScript since before jQuery. Away from the keyboard, Phil enjoys travel, live music, and hanging out with his mini sausage dog, Ruby.

Ivan Akulov
Senior Performance Engineer at Framer, Netherlands
Ivan is a:
• Google Developer Expert
• Sr Web Performance Engineer at Framer
• Prev. web perf consultant (Google, Toggl, Appsmith, etc.)
Outside of work, Ivan enjoys exploring modern art, discovering lesser-known electronic and techno artists, and obsessing over serif typefaces.

Lainey Feingold
Law Office of Lainey Feingold, USA
Lainey Feingold is a disability rights lawyer in the United States who has worked to make the digital world more inclusive since 1995 and negotiated the first web accessibility agreement in the United States in 2000. Lainey is an international speaker and the Digital Accessibility Resource for the global business to business non-profit Disability:IN. Lainey believes in collaboration over conflict. She developed and practices Structured Negotiation, a problem-solving strategy that avoids lawsuits and focuses on lasting change and relationship-building in the digital accessibility space. She is the author of Structured Negotiation: A Winning Alternative to Lawsuits.

Craig Dennis
Cloudflare, USA
Craig is a software educator, backend developer, and self-taught polyglot who thrives in the deep end and loves doing what people say isn't possible. He subscribes to the growth mindset, and hopes you will too.
He knows that coding is fun, and makes sure that learning it feels that way too.
As a developer, his strength is bridging the gap between idea and implementation to ensure that both programmers and product managers are speaking the same language.
You should hang out. Craig lives in Portland, Oregon.

Katerina Skroumpelou
Nx, Greece
Senior Engineer at Nx, open source contributor, GDE for Angular & Google Maps platform, WTM Ambassador, AngularAthens meetup co-founder. Mentoring women into tech, speaking about the cool things I do, climbing mountains and serving cats for life.

Andrey Sitnik
Evil Martians, Barcelona, Spain
With more than 20 years in open source, Andrey Sitnik created a few popular CSS tools (PostCSS, Autoprefixer), local-first framework (Logux), and many small libraries with millions of downloads (like Nano ID).

Natalia Venditto
Microsoft, Spain/US
With a developer career that started in the early 2000's and lived through the evolution of web and cloud development, Natalia Venditto has worked in the roles of full-stack software engineer in enterprise, technical lead, and architect. She's a Google Developer Expert for Web and Angular, an open source contributor to Angular, Node.js and core maintainer for Web Fragments. She works in the role of Principal Product Manager at Microsoft, architecting, developing and managing developer tools for AI and JavaScript.

Alexander Lichter
VoidZero, Netherlands
Alex is a Developer Relations engineer at VoidZero, a Nuxt.js Team member, Web Engineering Consultant, and open-source enthusiast. He creates tech-focused video content, co-hosts the DejaVue Podcast, speaks at conferences, and leads workshops to empower developers and advance the web ecosystem.

Alyssa Nicoll
Progress, USA
Alyssa is an Angular Developer Advocate for KUI and a Google Developer Expert for Angular. Her two degrees (Web Design & Development and Psychology) feed her speaking career. She has spoken at over 30 conferences Internationally. She streams weekly on the Angular Air podcast and Twitch CodeItLive channel. She enjoys gaming, scuba diving, and has a little one that fondly goes by "Mr. Milks".

Sergio Xalambri
Daffy, Perú
I'm Sergio Xalambrí, an Argentinian web developer living in Perú and working at Daffy.org.
I'm a tech writer at sergiodxa.com and an Open Source author and contributor.
I'm an early supporter and contributor of Remix. Previous contributor of Next.js, SWR, and several other OSS projects.
I’ve also authored Remix Auth, Remix Utils, remix-i18next, useMutation, flagged, and more packages.

Oleg Šelajev
AtomicJar, Estonia
Oleg Šelajev is a developer advocate at AtomicJar working on making integration tests with Testcontainers better for everyone in the community. VirtualJUG leader. In 2017 became a Java Champion.

David Haz
React Bits, Romania
David is a design engineer and creator of React Bits, building animated, highly customizable React components and contributing actively to open source tools that help developers build faster and more creatively.

Marius Hobbhahn
Apollo Research, UK
Marius Hobbhahn is the CEO & founder of Apollo Research, and part of the TIME100 AI 2025 list, which recognizes the 100 most influential people in artificial intelligence. Apollo is a technical AI safety org that works with OpenAI, Anthropic, and other frontier labs on model evaluations. Before that, he did a PhD in ML and worked on AI forecasting at EpochAI.

Simone Cuomo
This Dot Labs, UK
Mentorship available
VP of delivery at This Dot Labs, Vue Js guru, JS lover, A11y fan, PWA explorer,
@gitKraken Ambassador, book author and super dad.

Oleg Isonen
Webstudio, Germany
Oleg is a UI Engineer and the founder of Webstudio, an Open Source visual development platform that aims to break through the limits of popular no-code tools and solve designer-developer collaboration challenges.

Jen Luker
Gremlin, USA
Jen Luker is a Sr. Frontend Engineer, conference speaker, and BookBytes podcast co-host. She has spent the majority of her career as a full-stack developer using PHP, Javascript, and CSS, but has a particular fondness for frontend technologies. She is an advocate for both accessibility, and processes that make doing the right thing easy and the wrong thing hard. When she's not exploring solutions, learning new technologies, or reading, Jen's spare time is spent spinning yarn from raw wool and knitting; she's even been known to 3D print her own tools for the job. She is also fascinated by all things space, antique cars, and IoT.

David Burns
BrowserStack, UK
David Burns, heads the Open Source office at BrowserStack. He is also a core contributor to the Selenium project and Chair for the W3C Browser Testing and Tools Working Group.

Sathya Gunasekaran
Meta, UK
Sathya is a software engineer on the React core team at Meta, where he is currently building the React compiler. Previously, he worked on the V8 JavaScript compiler at Google.

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.