JavaScript experts, mentors, speakers

Zack DeRose is Senior Engineer for Narwhal Technologies, where he works to build a better world through tech! In addition to the enterprise consulting done at Narwhal, Zack is very interested in content creation and teaching others! When not building web applications at scale, Zack enjoys a robust family life at scale, living in Phoenix AZ with his wife and 6 kids.

David Blass is a full-time open source TypeScript developer and author of ArkType, a 1:1 validator for TypeScript. ArkType is the first validator to include a static parser that can infer TypeScript’s syntax as well as a full type system that can compare arbitrary pairs of types for assignability and automatically discriminate unions. Predictably, David loves parsers and types, but also bow ties and his wife’s vegan cooking. He lives with her and their 5 pets in Boston, Massachusetts, and is currently pursuing funding to continue working on ArkType full-time!

CEO Theatre.js, designing a design tool – blurring the line between designer/developer, author/consumer, and artist/scientist.

Marie is currently a Developer Advocate at k6.io, a Grafana Labs company. In the past, she has been an Engineering Manager, a Principal Engineer and a Test Consultant. She is also a tech blogger at testingwithmarie.com, an accessibility advocate and an online course instructor at Ministry of Testing and Test Automation University.

Tom Ballinger is a software engineer at Convex. He's taught compiler and computer architecture courses and facilitated at the Recurse Center primarily by goading people into writing BitTorrent clients. He's going to switch from vim to VSCode any day now.

Creative Engineer, passionate about Front-end Development and sharing knowledge. Open source contributor on VueJS and Nuxt related projects. Learning 3D modelling and WebGL. Storyblok Ambassador. Lead of micheladas. I love penguins.

Younes Jaaidi is a Software Cook who enjoys whipping code until tests pass. Raised in the eXtreme Programming kitchen some 20 years, he now teaches and coaches teams — perhaps yours next — to cook better software using ingredients such as Test-Driven Development, Charted Coding, and Collective Ownership. He's also an Angular Google Developer Expert, an Nx Champion, and a mediocre sailor. His favorite spice: sleep 300 && git reset --hard

Cecelia Martinez is a Developer Advocate for Appflow at Ionic, a company that helps web developers build cross-platform applications using modern technology. She is dedicated to creating better, more inclusive developer experiences for all. Previous companies include Cypress and Replay, with areas of expertise including web & mobile development, testing, developer tools, and open source. She is a Lead Volunteer with Women Who Code FrontEnd, Chapter Head of Out in Tech Atlanta, and a GitHub Star.

Innocencia Ndembera is the Co-Founder and Chief Operating Officer of Chip In Limited, a forward-thinking software engineering company committed to revolutionizing agriculture and financial inclusion in Malawi. With a passion for using technology to drive social impact, she leads initiatives like Sunga, a financial platform tailored for underserved communities, and Chip In Agriculture, a project that connects farmers with buyers for sustainable economic growth. As an advocate for women in tech, Innocencia also founded Women in Tech Malawi and serves as a Women Techmakers Ambassador, championing diversity and inclusion in the tech industry.

Ankita is an Creator Educator and Youtuber and creates educational content that helps developers level up in their careers such as her creates digital products such as her E-book on taking control of your first 90 days as an Engineering Leader, her courses on Next.js or Engineering Leadership. She has Taught 10,000+ students online. In the past, she has worked as a Senior Technical Leader, Solution Architect and Tech Lead. She has architected and scaled many web and mobile apps for clients using React, GraphQL, React Native and Next.js and Spent over 10+ years in Tech at the intersection of Front-end and Leadership.

Manuel is a full-stack software engineer and TypeScript specialist, and a core contributor to TanStack Router and TanStack Start.

Web Game Developer and Technical Evangelist, Enclave Games indie studio founder, js13kGames competition creator, Gamedev.js community firestarter and Gamedev.js Weekly newsletter publisher. Excited about cutting-edge Web technologies like WebXR, Progressive Web Apps, and Web Monetization API. Likes eating sushi and playing Neuroshima Hex.

Hands-On CTO | Software Architect | Principal Engineer | Consultant | Speaker | Mentor — AI Systems & Scalable Cloud Platforms With over 10 years of software architecture experience and over two decades of hands-on software engineering experience, I design and build production-grade systems — from cloud-native architectures to AI-driven workflows — with a focus on scalability, reliability, and long-term maintainability.

Lead Frontend Developer and CSS Evangelist. Editor of the @webstandards_en frontend news feed. The 5th voice of the Web Standards weekly podcast. Google Developers Expert on web. The organizer of conferences and local meetups. Friendly beard.

Krzysztof is a photographer, globetrotter open-source maintainer, and public speaker. He works as a Senior Research Engineer at GitHub Next, where he designs and builds the next generation of developer tools such as GitHub Copilot. After the work, Krzysztof is an open-source software maintainer passionate about functional programming (especially F#), editor tooling and developer experience - he has created and maintained several OSS projects varying from language servers to web frameworks to VSCode plugins. Additionally, he is a passionate public speaker. You can meet him at many conferences around the world, where he is always trying to meet new people and learn how to make the lives of software developers better.

Tom is the Head of Developer Experience at Convex, which means he's the one to blame if your support tickets takes longer than 5 minutes to get a response. He also spends a lot of time talking with developers in order to better understand how to make Convex the fastest, most reliable and easy-to-use development platform on the planet. If you have any ideas, email him! Tom got into software engineering as a kid, and it's a passion that never left. His free time is spent reading programming books (no joke), and playing covers of 90s pop songs on his guitar while singing extremely loudly and beautifully.

Justin is the creator of [FormKit](https://formkit.com/), [ArrowJS](https://arrow-js.com), [AutoAnimate](https://auto-animate.formkit.com/), and [VueFormulate](https://vueformulate.com/). When he’s not working on open-source, Justin is a devoted husband, father of three boys, and connoisseur of all things aviation.

Ixchel Ruiz a DA @ JFrog has developed software applications and tools since 2000. Her research interests include Java, dynamic languages, client-side technologies, DevSecOps, and testing. A Java Champion, Groundbreaker Ambassador, CD Ambassador, Hackergarten enthusiast, open source advocate, public speaker, and mentor, Ixchel travels around the world (sometimes virtually) sharing knowledge—it’s one of her main drives in life.

Full-stack developer with 18+ years of experience, currently he is head of engineering at Product Hunt (owned by Angel List). In his spare time, he organizes React.NotAConf conference and React.Sofia meetup.

Staff software engineer and technical author with 5+ published books. Since 2017, he’s written extensively about software and product development, with his work reaching 5M+ readers. He specialises in turning complex problems into simple, reliable systems and building delightful user interfaces that hold up in the real world.

Sylwia (pronounced "Sylvia") is a developer advocate at Inngest, a tech writer, and an educator passionate about making tech accessible and diverse. She is a co-organizer at React Robins, a community for women and non-binary React devs. Aside from tech, she’s working on a card game and loves hiking, biking, pierogi, and plants.

Second best TypeScript YouTuber who happens to run dev tools company. Known primarily for memes, hot takes, and building useful things for devs such as UploadThing and the T3 Stack.

Braydon Coyer is a Senior Frontend Engineer at LogicGate, where he plays a key role in developing an automated Governance, Risk, and Compliance (GRC) platform. As a creative developer, blogger, and designer, he enjoys tinkering and sharing his projects with the public. Braydon lives in Texas with his wife and two daughters.

Krasimir Tsonev is a coder with over 20 years of experience in web development. Author of books on JavaScript he works at Antidote.me where he helps people reaching clinical trials. Loves React and its ecosystem.