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!

Andrew Coleburn
Bitovi, USA
Andrew is a theatre kid turned software developer. He got his BA in psychology and theatre from Hobart College and his MA from the University of Central Florida. After a range of disparate adventures including acting, consulting, teaching, and recruiting, he attended the full-stack software engineering program at Thinkful, after which he joined Bitovi as a React Developer. Andrew consults for Fortune 500 companies like Yum and Aflac, helping them build high performing and scalable React applications
Originally from Massachusetts, he currently lives with his partner in Buffalo, NY. In his free time you'll probably find him cooking, reading, board-gaming, skiing, or cheering on the Boston Bruins. Mostly just that last one.

Mark Heistek
Lasciva B.V., Netherlands
DevOps, Agile/Scrum and Continuous Delivery coach especially within enterprise organizations.
Improving people, processes and techniques is what I constantly do. In the end it's the results that matter!

Ray Luxembourg
Sisense, Israel
Ray Luxembourg is a Technical Lead at Sisense, where he designs and develops frontend cross-framework Software Development Kits (SDKs). With expertise in React,Vue, Angular, and backend technologies, Ray focuses on creating seamless integration and enhanced usability across diverse platforms. He has been recognized for his innovative solutions, including a CEO Award for Product Innovation. Ray is passionate about improving development processes and utilizing AI to optimize software functionality and education.

Jozef Sakáloš
Bryntum, Slovakia
Saki is a seasoned software developer with decades of experience, specializing in JavaScript and modern web technologies. He has led the development of numerous web applications across various industries, blending deep technical knowledge with hands-on problem-solving. As a consultant and trainer, he supports teams in building scalable, high-quality solutions. His passion is sharing knowledge and promoting clean, maintainable code.

Bogdan Plieshka
Zattoo, Germany
Mentorship available
Principal Frontend Engineer at Zattoo | React Berlin Meetup Organizer | Crafting symbols for over a decade 👨💻✨
Travis McGeehan
GFS, USA
Known as TiKevin83 online, Travis McGeehan is a Senior Software Engineer at GFS in West Michigan specializing in frontend optimization during the day and with a knack for video archival techniques from years spent organizing the TASVideos and TASBot communities and making retro game TASes.

Sriram Hariharan
Ibotta, USA
Staff Engineer at Ibotta, formerly co-founder and COO of OctoShop before its acquisition by Ibotta.

James O'Reilly
Google, Developer Relations Engineer, USA
James O'Reilly is a Developer Relations Engineer at Google, where he focuses on AI agent orchestration and multi-agent systems via Google Antigravity. Specializing in automated platform modernizations, James helps enterprise engineering teams safely migrate aging monoliths to highly optimized architectures. He loves building infrastructure that lets AI do the heavy lifting.

Thomas Heyenbrock
Stellate, Germany
Software Engineer at Stellate, passionate about problem solving and company building, using GraphQL, JavaScript and React

Ziv Levy
Wix, Israel
I'm currently working at Wix.com as a software engineer in the very exciting Wix’s Data Science group. I'm an open-source enthusiast, have a fetish for web performance, love technology at its best when it's visual, and… mixing techno sounds at night!
Kyle Simpson
Software Engineer, Public Speaker, and Teacher, USA
Kyle Simpson is a human first and then an engineer. His mission is to show the world that the culture of empathy and relational information exchange are keys to unlocking the full potential of every human in the workplace. JS and open web technologies are among Kyle's favorite tools to augment human endeavors. Kyle has published 10+ books on JS, taught thousands of developers from teams around the world, and his training videos have been watched over 750,000 hours. He's still fighting for the people behind the pixels.

Rick Button
Bloomberg, USA
Rick is a Senior Software Engineer at Bloomberg working on JavaScript tooling and infrastructure, and a delegate for TC39, currently thinking about immutability in JavaScript!

Faris Aziz
Smallpdf, Switzerland
Mentorship available
Faris Aziz is a Staff Frontend Engineer specializing in React, Next.js, monetization systems, and resilient web architecture. He's led teams in early-stage startups and scaling companies, built career ladders from scratch, and shipped systems used by millions.
His work spans greenfield builds and legacy refactors across Fintech, SaaS, Fitness, and Connected TV, with companies like Smallpdf, Fiit, Discovery, GCN, and Navro. He focuses on building performant, user-centric applications with solid observability and maintainability.
Faris co-organizes ZurichJS, contributes to tools like Raycast, and spends time contemplating life's great questions, like why the build works on his machine but nowhere else.

Brendan Duncan
Unity Technologies, USA
Brendan is a senior software engineer working on graphics and the web platform for Unity Technologies, where he combines his love of creativity and technology. Before Unity, Brendan has 20+ years working in animation studios such as Disney, and technology companies such as Google.

Michal Srb
Convex, Czech Republic
Michal is a full-stack software engineer at Convex, who’s worked on all aspects of the Convex platform: From marketing and documentation to client and server libraries, authentication, database implementation, provisioning orchestration and billing. Previously he worked for 7 years on new products at Meta.

Thorsten Hell
cismet GmbH, Germany, Tholey
I am Managing Director of cismet GmbH. cismet GmbH was founded in 2002 as a spin-off of the Environmental Informatics Group at the Saarland University of Applied Sciences and develops open source-based solutions in the municipal sector.

Ursula Cervantes
N26, Germany
A gal who wants to create awesome stuff. A problem solver and allround web developer.
I‘m a senior programmer with good knowledge of front-end techniques. I love algorithms, data structure and I also stand for quality.
I believe in nudging things forward — thoughtfully and intentionally. Asking ‘what if’ as often as possible, constantly challenging standards, and experimenting endlessly.

Yshay Yaacobi
Livecyle, Israel
Yshay Yaacobi is the co-founder and CTO at Livecyle, an early-stage startup that specializes in collaboration on top of live environments. Yshay has more than a decade of experience with web and cloud technologies, has given local talks about various technologies and is co-organizer of the Rx-Israel meetup group.
He is passionate about programming languages, functional programming, cloud and system architecture. Yshay is extremely interested in open source, and is the lead developer of Tweek (git.io/tweek) - a cloud native open-source feature manager. Over the last few years Yshay has been using Docker and Kubernetes heavily and has also given sessions in several cloud-native/devops meetups and events.
Mohamad Shiralizadeh
ING, Netherlands
Passionate Code Wizard at ING 🦁 | AI & JavaScript Enthusiast 😍 | Lifelong Learner 🌀 | Public Speaker 😊 | Family Lover 👨👩👧👦

Giamir Buoncristiani
Stack Overflow, Italy
Giamir is a Staff Engineer specializing in UI Architecture and Design Systems at Stack Overflow, where he leads various frontend-related initiatives. Most recently, he and his team have made Stack Overflow's products more accessible and have helped the engineering organization adopt modern approaches to building user interfaces. Giamir is passionate about enabling teams to deliver the best possible experiences for their users.

Rahul Nanwani
ImageKit.io, India
Rahul is the CEO and Co-Founder of ImageKit.io, a leading SaaS platform that helps developers optimize, transform and deliver high-quality images and videos on the web.

Robert Pop
NorSoft Development, Romania
Co-Founder, Entrepreneur, Software Engineer, Consultant, Trainer
I am passionate about technology and building products that solve real world problems.
I love to teach people how to code and get them started on their coding journey. I've held many workshops and guided students into the world of programming.
My passions include building products, learning new things, sharing my knowledge, and helping others.

