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!

Chaitanya Rahalkar
Block Inc, Austin, TX, USA
I am a Software Security Engineer at Block (f/k/a Square). I am passionate about AI, startups, and cybersecurity

Ashley Claymore
Bloomberg , UK
Ashley is a software engineer at Bloomberg in the Trading Analytics team. He has been using TypeScript since v1.8 and contributed to the TypeScript implementation of the new 'Ergonomic brand checks for private fields' syntax. He is also a Bloomberg TC39 delegate currently working on the 'Change Array by copy' proposal.

Laurin Quast
The Guild, Germany
Laurin Quast is a developer that started exploring GraphQL, by leading the private and later public API development at a start-up. Realizing that there are still many unsolved problems and challenges within the space, he started contributing to famous JavaScript libraries, such as GraphQL Code Generator and GraphQL Tools. Diving deeper and deeper, the transition into becoming a full-time open-source developer at The Guild was inevitable.

Jasmin Assulin
deidei, Finland
CEO & Co-founder at deidei | Diversity, Equity, Inclusion & Comms specialist | She/her

Marco Otte-Witte
Mainmatter, Germany
Marco is the founder and Managing Director of Mainmatter, an Engineering Consultancy from Europe. He has been in tech since the late 90s and worked with various technologies from .NET to Rails, Elixir and Phoenix, TypeScript and Rust. He and his team advise international teams on architecture, technology choice, process, and developer infrastructure. He is passionate about developing sustainable and reliable products and organizations based on strong foundations. Marco is also the Host of EuroRust, the leading Rust conference in Europe.

Hila Fish
Senior DevOps Engineer, Israel
Hila Fish is a Senior DevOps Engineer, with 15 years of experience in the tech industry.
AWS Community Builder, Hashicorp Ambassador, and an international public speaker who believes the DevOps culture is what drives a company to perform at its best and talks about that and other DevOps/Infrastructure topics at conferences.
She carries the vision to enhance and drive business success by taking care of its infrastructure.
In her spare time, Hila is a lead singer of a cover band, giving back to the community by co-organizing DevOps-related conferences (Inc. "DevOpsDays TLV" & "StatsCraft" monitoring-focused event), providing mentorship and managing programs in “Baot” (The largest Israeli technical women’s community), and enjoys sharing her passion and knowledge wherever she can, including across diverse technology communities, initiatives and social media.

Jad Fakih
Integrix AI, Australia
I am the founder of Integrix, an AI-driven agency that helps established businesses leverage artificial intelligence and automation to transform their sales and marketing strategies. With a background in sales and over a year of focused experience in AI and its practical applications, I specialise in guiding business owners to streamline operations by automating routine tasks and optimizing sales cycles. This enables them to concentrate on high-value tasks, accelerating growth and scaling their business.

Moritz Gruber
Caisy, Germany
From an early age, Moritz was fascinated by computers and technology. This passion led him to pursue a degree in IT and while still studying, Moritz met his future co-founder. The duo quickly started the journey of founding their own tech startup in the headless CMS domain: caisy. As the CTO of caisy, Moritz melds his robust background in software development with an entrepreneurial passion. He has one clear mission building the core of his work: to simplify content management for fellow developers.

Santosh Viswanatham
Arcesium , India
Santosh is a Principal Engineer at Arcesium, an Open Web advocate, and a former Ambassador at the Interledger Foundation. He is passionate about building things with JavaScript. Santosh was previously a Tech Speaker and a Participation Leader at Mozilla. As a Tech Speaker, He delivered talks on JavaScript, WebVR, Cross-Platform browser extensions, and Devtools in the past. In recognition of his contributions to Mozilla, his name is featured in the about:credits of every shipped Firefox browser.

Andrew Hao
Lyft, USA
Andrew is a Staff Engineer at Lyft, where he builds products for Lyft's riders. When it comes to engineering, he's especially passionate about Web performance, machine learning and systems design. When it comes to people, he loves learning about what makes people tick and building high performing teams. In a prior life, he was a Principal Engineer at Carbon Five and an Engineering Manager at Blurb Books. He lives in Oakland with his family where he spends his free time running the streets and trails, dreaming about the day we'll be able to race in person.
Online, he writes at https://www.g9labs.com

Cristobal Chao
Torii Studio, USA
Cristóbal Chao is a software engineer, UX specialist and founder of Torii Studio. He crafts frontend systems that are expressive, fast, and rooted in storytelling. His work blends the boundaries of design and engineering—whether he’s animating particles in WebGL, or helping teams scale React apps with soul. Previously, he worked at Google and co-founded multiple creative tech products.

Neciu Dan
Rover.com, Spain, Barcelona
Neciu Dan is the technical co-founder and tech lead of CareerOS, where he spearheads the development, maintenance, and scaling of the main application. Bringing over 12 years of engineering expertise to the table, Dan has a proven track record in the tech industry, having previously served as a Senior Product Engineer at the New York E-commerce brand, AdoreMe, and as a Senior Software Engineer at the food delivery company, Glovo.

Jonas Kruckenberg
CrabNebula, Germany
As a self-taught web developer, I quickly discovered my love for lightning-fast software - whether it's a website or an app. This passion has sent me on a long journey from fine-tuning websites to exploring the exciting world of Local First Software and peer-to-peer networking.
Along the way, I can't help but ponder what our digital will look like, and how we can make it more secure, privacy-focused, and beneficial for humanity. Putting my money where my mouth is, I’m currently working on Tauri, a framework to build smaller, faster and more secure apps.
Luca Del Puppo
Nearform, Italy
I'm a Senior Software Engineer, Former Microsoft MVP, Google Developer Expert Codemotion Ambassador and GitKraken Ambassador. I love JavaScript and TypeScript.
In my free time, I love studying new technologies, improving myself, creating YouTube content or writing technical articles. I can’t stay without trail running and love to do it in my love Dolomiti.

Lili Kastilio
Snyk, UK
Working closely with customers designing & building TypeScript solutions. Recently a Lead Engineer at Snyk working on extending our current languages offering by introducing new languages and language specific concepts into our system in the shape of libs, parsers and microservices. When not coding I like to spend my time hanging upside down doing circus things.

Paolo Insogna
Platformatic, Italy
Node.js TSC Member, Principal Engineer at Platformatic, Polyglot Developer. RPG and LARP addicted and nerd on lot more. Surrounded by lovely chubby cats.

Arun Michael Dsouza
Bloomberg, UK
Computer programmer from India currently building enterprise products for the web. Tech speaker, open source software author and contributor. Community leader for React Delhi-NCR and Open Source Delhi. Plays drums (occasionally), loves travelling, listening to rock music and playing video games.

Tamar Twena-Stern
XM Cyber, Israel
Tamar is a software developer, manager and architect. She has a decade of software engineering experience in various technologies: Server side, big data, mobile, web technologies, and security. She is currently focusing on Node.js, and has a deep knowledge of Node.js server architecture and Node.js performance optimisations.
Giulio Zausa
Flux.ai, Austria
Giulio is an Italian software engineer working at Flux and contributing to open source with Poimandres. He's deeply passionate about pushing the web platform to its limits, building things like custom React reconcilers, real-time computer vision on Web Workers and flex layout engines for THREE.js.

Dylan Jhaveri
MUX, USA
Dylan is a Senior Software Engineer at Mux, a startup building online video infrastructure for developers. Dylan works on the DevEx team to help developers deliver smooth video to their users. Previously he co-founded Crowdcast, a live video streaming platform.

Dotan Simha
The Guild, Israel
Creator of the GraphQL Code Generator library. Open source developer. CTO @ The Guild

Fredrik Höglund
ephem.dev, Sweden
Fredrik is currently a freelance consultant and has been working with and been weirdly fascinated by React Server Rendering for the last 8 years. He is a React Query contributor, has written his own custom server renderer(s), and though he wishes he had time to contribute more actual code to open source than he currently does, his issues, discussions, suggestions and explanations on mostly SSR-related matters litters many corners of GitHub and the wider internet.
He lives in Stockholm, Sweden, is a Cognitive Scientist by education and likes brewing beer in his free time, that is, when he isn’t playing Zelda with his kids. Zelda is incidentally also the name of his dog.

