JSNation 2026

Matt is an independent TypeScript educator, building awesome self-paced courses at Total TypeScript.

Jesse Hall, aka @codeSTACKr, is a Staff Developer Advocate at LiveKit.io and a full-stack developer who specializes in teaching web development. He creates articles, videos, live streams, and interactive presentations that help developers build AI-powered web applications. Jesse focuses on JavaScript, TypeScript, React, Node.js, Next.js, Tailwind CSS, and real-time communication technologies. As a self-taught developer, he understands the challenges developers face and breaks down complex topics into clear, actionable content for web developers at all skill levels.

Luca Mezzalira is principal solutions architect at AWS, an international speaker, and an author. Over the past 20 years, he’s mastered software architectures from frontend to the cloud, providing the right solution for the context of the job at hand. OReillyMedia Author

Jason Williams is a Senior Software Engineer at Bloomberg LP in London, UK, focusing on performance. His work in performance includes collaborating with the W3C Web Performance Working Group to bring Container Timing to the web, a more accurate improvement over Largest Contentful Paint. He has also collaborated on V8 improvements, bringing heat snapshot times down from 10 minutes to 6 seconds. In the open-source community, he is the original author and developer of Boa, an open-source JavaScript engine written in Rust. He is heavily involved in the evolution of ECMAScript, serving as an author on the Stage 4 proposal for Promise.allSettled, which ensures all promises settle before returning results. He is also a champion for the Stage 3 Temporal proposal (for which Boa’s temporal_rs the implementation used in Chrome), which aims to provide standard objects and functions for working with dates and times in ECMAScript.