JavaScript experts, mentors, speakers

Frédéric Harper is a seasoned Developer Advocate with over 20 years in tech, currently Senior Developer Relations Manager at Tiugo Technologies specializing in TinyMCE rich text editor. Fred has held developer advocacy roles at industry giants such as Microsoft, Mozilla, Fitbit, and npm. He's spoken at hundreds of events globally and authored a book on personal branding for developers at Apress.

Developer of lynx-ui for the Lynx family of technologies. Cat enthusiast. Focused on building purr-fect components for Lynx.

Karen Li is a concert pianist turned elementary school teacher turned software engineer. She is currently a software engineer at GitHub's npm team. Aside from engineering work, Karen blends education and technology by sharing her experience with the community. Her motto, "I invest in brains" captures her journey from teaching to tech empowerment.

Noam Zingboim is a seasoned software engineer specializing in Node.js, JavaScript, and system design for scalable backend services. With experience ranging from architecting new products to maintaining critical systems, he focuses on building maintainable, reliable, and high-performance solutions.

George is a TechLead @ BlackRock with 12+ years of experience in the FinTech industry. He has architected, designed and build various systems, from data warehouses to large MFEs. He lives and breathes in the full stack space between Data and UX. Proven ability to architect, design, and implement complex solutions while fostering high-performing engineering cultures.

Fullstack Software Design Engineer at Mattermost. He has helped with the re-architecturing of the new version of the mobile app, written in React Native. Confident with React, React Native and Go, and always happy to learn new things. Fun fact: studying psychology for fun.

Working on @reactjs for the web. I currently work at Meta on cross-platform React frameworks. Our goal is to improve engineering efficiency and product quality, to reduce product time-to-market, and to produce high-quality native user interfaces from existing web code. The software we work on is used by products like Facebook, Instagram, Messenger, Oculus, and Workplace.

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.

Nitin is a dynamic Full Stack SDE 2 at Expedia Group, India, who thrives on crafting exceptional web experiences. Over the years, he’s worked his magic on projects for Marriott, H&M, Expedia, and more. While React is his go-to tool, his tech arsenal also includes Swift, Kotlin, Spring Boot, GraphQL, and a bunch of other developer superpowers. Known for his love of dev jokes and pun-packed humor, he’s the kind of colleague who keeps both the codebase and the conversations lively. When he’s not coding, Nitin is either jet-setting to new destinations, smashing shuttlecocks on the badminton court, or jamming out while learning the drums. A fun mix of tech wizardry and good vibes, he’s always up for an adventure—be it debugging or backpacking!

Backed by 15 years of architecting, developing, and managing software teams, I’m an experienced software EM, based in London. My passion is building a great team culture, and delivering through lean & agile frameworks.

Blazej Abel - Entrepreneur, founder, and CEO of Landingi, one of the leading landing page platforms. An engineer by education. He bounded with the Internet industry for 20 years, when he started an interactive agency and spent most of his career close to website creation. Speaker at numerous conferences and a trainer. Husband, father, football player, cyclist and LEGO fan since 1982 :)

Keren is a senior software engineer with over a decade of experience in the industry. She holds an M.Sc. in Computer Science and is passionate about React and learning new technologies. Keren volunteers as a program manager at Baot, a community that supports women in R&D in their professional growth. She instructs and inspires developers to write blogs in her tech blogging workshops. Keren has experience as a dev community leader and a co-organizer of meetups and events. And in her not-so-spare time, she studies psychology. Her hobbies include drawing, photography, and singing.

Software developer building on the web with TypeScript, React, Node.js, and more. Writer, YouTuber, and lifelong learner who enjoys sharing knowledge with others

Elina builds web apps, untangles state logic, and occasionally wins battles against heavy data waves coming from the backend. She enjoys crafting complex UIs for unusual users, cares about good architecture and mental health, and firmly believes that “just one more refactor” is a valid personality trait.

Hi, I'm Walmyr. I'm a software engineer who loves testing. I'm also a clean coder, blogger, YouTuber, podcaster, Cypress.io Ambassador, online instructor, mentor, speaker, an active member of the testing automation and JavaScript communities, and a fan of good music, tattoos, gardening, vegan 🌱 food, and skateboarding.

André is a seasoned developer with over 20 years of experience and is currently a Principal Engineer at bettermarks, a Berlin-based EdTech company. When AFK, he loves biking, watersports and woodworking.

With 15+ years in Digital Marketing and Tech, Leo has built and led numerous high-performing teams and streamlined key business operations. He spent 5+ years as COO at iProspect, a major performance marketing agency within the Dentsu group. Prior to that, he held roles as a marketing expert at Booking.com and as a business consultant for IBM, Microsoft, and Hewlett-Packard. Currently, at Albato, a no-code integration platform, Leo leads customer acquisition and business development efforts. Albato helps SaaS companies drive growth and enhance customer experience through native, embeddable API integrations.

Dora Makszy, an experienced product design lead, focuses on seamless product delivery through efficient collaboration with cross-functional teams, especially developers. With over 17 years of international experience in various roles (developer, business analyst, manager and mainly a designer), she has a comprehensive understanding of the entire process.

Dara is a Software Engineer currently working at Spotify where she develops tools and services that provide internal teams with access to user account data. She began her career as a Frontend Engineer in the finance sector, and recently transitioned into full-stack development. With over 6 years of hands-on experience, Dara is particularly passionate about merging her creative and technical skills to design and build user-centric products that foster community. Outside of work, she loves to mentor other women who are at an early stage in their tech careers.

Mikhail is a seasoned developer and tech leader with track record of working with both large companies across EU and small startups. Mikhail is passionate about new technologies and loves to share his knowledge with the world.

My name is Andy O'Neil, and I help entrepreneurs add time-saving automation to their businesses through a process called co-building. This is a 1-on-1 process where I assist business owners in building automations over Zoom calls. Each session is personalized to meet the specific needs of the business owner and their business automation requirements. I have been creating no-code processes and automations since 2006, even before the term "no-code" was widely used. I have a passion for teaching entrepreneurs how to automate their businesses using Make.com, which is why I focus on co-building. My goal is to empower people to understand and control the automation processes in their businesses. I have been married for 21 years and have four beautiful children who keep my wife and me very busy.

Founder at uncloud on a mission to simplify baremetal for software teams. Software dev at heart with a passion for distributed systems and making things run at scale ⬥ YouTuber ⬥ Dad of Ida 👶🏻 Caretaker of Frodo 🐶

With 16 years of product and business leadership in marketing technology at top companies like Salesforce, Adobe, WPP, and Rakuten, Udipta has led 8-figure revenue units and launched NK BigStar, Northeast India's largest streaming platform, reaching 500K monthly active users. Currently in C-level roles at innovative crypto startups, he played a key role in Bowled.io's Token Generation Event, driving over $10 million in daily trading volume for the BWLD token across multiple exchanges.

Software developer with more than 20 years of professional experience. Team member of Vite and Svelte.