JavaScript experts, mentors, speakers

By day, Maarten supports front-end teams at Essent with their Accessibility and Design System challenges. By night, he tinkers with the Web Platform.

Graham is the Co-founder and CEO of GrowthBook, the most popular open-source feature flagging and A/B testing platform. GrowthBook is backed by Y Combinator and Khosla Ventures. Before starting GrowthBook, Graham was the CTO of Education.com for 6 years. Graham is a three-time startup founder, including starting an international non-profit to increase access to communication in the developing world, particularly sub-Saharan Africa. He has a degree in Physics from CMU.

Benjamin Swerdlow took a break from his studies at UChicago, to go work as a Senior Backend Engineer for Apple, who recently took a break from Apple to build Freestyle. He's been building in the Open Source community since high school, and was a technical lead for the World Health Organization's COVID-19 App team.

Tech Lead with over 15 years of experience in IT across various industries, including media, public sector or finance. Proven track record in leading development teams, designing scalable systems, and delivering impactful solutions. Recent work focuses on the practical implementation of AI in production environments, enhancing workflows, automating processes, and driving innovation.

Developer Experience Engineer @ Sentry, organizer of React Toronto community, tinkerer.

Manasa is a seasoned software engineer with 12 years of experience, specializing in event-driven architectures, data engineering, and scalable systems. She has worked for top companies like Splunk, Selector AI, Celcom, Taulia, and RingCentral, and recently spoke at Grace Hopper Celebration 2024, receiving a standing ovation. Passionate about empowering women in tech, she mentors aspiring engineers and shares her journey from intern to lead engineer. Manasa balances career growth with family, continuously striving to lead with emotional intelligence and technical excellence.

I’ve spent over 15 years in tech, building products and leading engineering teams that scale. From writing code to shaping strategy, I love solving complex problems and turning ideas into real-world solutions. I believe great products are built by empowered teams, and I’m passionate about creating spaces where engineers can collaborate, innovate, and make an impact.

Tom is the Chief Product Officer at Vercel leading Engineering, Product, and Design. Previously he spent over 12 years at Facebook where he led development of the company’s core JavaScript Infra, shaped its open source program, and was responsible for the creation and development of React and React Native. He enjoys traveling, dance music, fancy cocktails, and simple food.

David Chicaiza is a senior front-end engineer from Bogotá, Colombia, and a React, NodeJS, and TypeScript enthusiast. He is currently based in Prague, creating data management solutions at Ataccama. David brings a blend of technical skills and public engagement to his role as an MC. When he's not working on software solutions, you might find him making music, playing chess, or traveling.

Grigorij is an author of Clean Coder (https://github.com/GregorD1A1/Clean-Coder-AI) - a multi-agent framework for autonomous code writing by AI. He used Clean Coder to write most of the code in his startup takzyli.pl, where Grigorij is CTO and co-founder. He is also interested in open-source LLMs and their application in different fields, including robotics. Grigorij built a robot capable of thinking and making coplicated decisions using a local LLM on a Raspberry Pi on his deck. He works with the fine-tuning of open-source models. Grigorij creates educational content on YouTube about AI development and open-source LLMs.

I currently work at ByteDance as an Engineering Lead for E-Commerce payments system software driving the business of TikTokShop product in the US. I graduated from Carnegie Mellon University with a Masters degree and Vellore Institute of Technology with a Bachelor's degree. I’m a seasoned Silicon Valley professional in the Payments domain with proven engineering expertise for 10+ years. I pioneered the Software Engineering marvel resulting in the increase of user count of products by about 800 times in less than 6 months, generating kick-start revenue of $120k per week during 0 to 1 product growth, tripling the revenue from $5 billion to $14 billion in less than 5 years by getting over the plateau growth, for some of the prominent products in the world like iPhone, Apple Watch, iPad, AWS Amplify, Amazon Alexa mobile app, TikTok shop and Oracle backend server supercluster. The by-products of these business results are multifold improvement in Engineering productivity and grooming myriad software professionals for world class companies like Apple, Amazon, Oracle, SanDisk.

With over 29 years of experience in software development across government and commercial sectors, I've designed and implemented enterprise-class distributed systems and led software development teams in both startups and mature organizations. I run the YouTube channel and Skool.com community Coding the Future With AI, where I teach developers how to harness AI across the entire software development lifecycle. In addition to consulting with teams, I build open-source tools to help developers and organizations integrate AI into their workflows effectively.

Jeff Schnitter is a Solution Architect at Cortex. He has spent the majority of his career working in build and release engineering, development pipeline automation, developer experience and developer productivity. Prior to joining Cortex, he had stints at IBM, PeopleSoft/Oracle and Workday.

m4dz is a curious animal. Former Frontend Dev, Devtools enthusiast, he has made the Developer eXperience (DX) his cherished topic. All the technologies are under his radar to get things ever simpler. His moto: "Developers are users just like you." As a life-long dreamer his favorite book will ever remains "Alice's Adventures in Wonderland".

Backend Software Engineer for +10 years in industries such as telco, online betting, and financing, embraced the passion for leading and caring for people 3 years ago, being now at OLX Group as Engineering Manager.

Game developer with a healthy curiosity for the web. Worked at Wooga for a few years, then freelanced in several game studios. Now in charge of making tech work at PlayPack here in Berlin.

John joined React Flow in 2022 and takes care of the documentation, communication and community.

I work as Developer Relations at CodeMiner42, Node.js core (https://github.com/nodejs/node?tab=readme-ov-file#collaborators) and committer at libuv (https://github.com/libuv/libuv/pulls?q=+is%3Apr+author%3Ageeksilva97+). I'm passionate about learning, I like to create tools that improve the lives of other devs, and sometimes I recreate things that already exist just to understand their internal mechanisms. In my free time, I like to read about various subjects from philosophy to stories about dystopian futures. I also like to write about tech and philosophy, as well as recreating famous projects (e.g., JVM compiler), just to learn how things work under the hood.

Experienced Customer Success professional with a history of working in developer tooling and startups. Extensive background as a support professional.

My degree is in Graphic Design, but when I started coding by accident, I fell in love with the beauty of good code. I've never looked back. I've worked for tiny sole proprietorships and giant multinationals, startups and mature companies. I've found something interesting and worth doing at all of them.

Keren Fanan is the co-founder and CEO of Myop, a developer-first platform transforming how UI and UX are built, controlled and optimized in production. Keren has held key leadership positions at Moon Active and Gett and has a proven track record of success in scaling startups, launching strategic partnerships and driving profitability. At Gett, a global B2B transportation leader and unicorn, Keren served as Chief Revenue Officer and GM Enterprise. She was instrumental in scaling the company from its early stages to over $200 million in revenue, leading international SaaS strategy and overseeing marketing, sales, and business development. Following Gett, Keren joined Moon Active, a $5B gaming company, as VP of Product & Monetization. There, she led cross-functional teams, shaped product direction, and grew average daily revenue from $10K to $200K, contributing to over $1.5B in total revenue. Keren is a passionate advocate for women’s inclusion in tech and serves as a board member at Women in Tech (WIT). She also actively mentors and supports the next generation of female tech leaders.

Generative AI Engineer and Product Manager, working in IT for the past 13 years. MSc. in AI Engineering. Founder of CEE AI Hub, AI venture building and local communities booster. I worked in corporates (Microsoft, Cisco) and startups (edrone, kontakt.io), finished my full-time working as a Product Director. I am helping companies implementing Generative AI features / products and building product (engineering) teams. IoT and homelab enthusiast. I own a vineyard

Christian Sparks is a Systems Engineer working at Cloudflare, primarily focused on Builds and Automation for the developer platform. His work ranges across the stack, from front-end to Golang backends, to bleeding edge Workers-based services. Specifically, he works on the customer-facing build systems for the Pages and Workers CI, helping make the process of deploying applications on Cloudflare easier.

Oli started his career crafting virtual worlds as a video game developer, driven by a love for immersive experiences and creative problem-solving. That journey led him to Google, where he honed his engineering skills at scale. Eventually, his focus shifted toward the web—specifically front-end development—where he found a new passion: building fast, accessible, and user-friendly interfaces. Now, Oli channels that passion into refining enterprise-grade libraries at AG Grid. He cares deeply about accessibility (a11y) and user experience, always striving to make the web a more inclusive and intuitive place for everyone.