Projects
Things I've built
Open source projects, products, and experiments.
Open Source
33 JavaScript Concepts
Repository created in 2018 to help developers master JavaScript fundamentals. Recognized by GitHub as one of the top open-source projects of 2018. 63,000+ stars and translated into 20+ languages.
JavaScriptOpen Source
Work
Spaceship
Built the domain search platform from scratch as the sole front-end developer. React, TypeScript, Zustand, TanStack Query. Beast Mode bulk search, real-time WebSocket pricing, multi-currency engine across 500+ TLDs.
TypeScriptReactZustandTanStack Query
SaaS
Shopwyse
An ERP software to help modern companies sell more. Built with React, Node.js, and PostgreSQL.
ReactNode.jsPostgreSQL
Personal
leonardomso.com
This portfolio website. Built with Next.js 16, Tailwind CSS v4, and deployed on Vercel.
Next.jsTypeScriptTailwind CSS