Carlos M.

Full-stack JavaScript developer with 6 years building web and mobile apps that are fast in production. I've cut form load times from ~10s to under 1s on a live CRM, and reduced image payloads by 6x on a media-heavy platform. I work end to end: React, Next.js and Astro on the frontend, Node.js/Express with MongoDB or PostgreSQL on the backend, React Native with Expo for mobile. I can build from scratch, join an existing codebase, or fix what's broken, and I'm comfortable inheriting messy projects. Tech: TypeScript, JavaScript, React, Next.js, Astro, React Native, Expo, Node.js, Express, MongoDB, PostgreSQL, Drizzle ORM, Supabase, Firebase, GraphQL, REST APIs, Python, SASS/SCSS, unit testing, Git, Linux. Native Spanish, fluent English. I reply within a few hours on weekdays. Send me a short description of what you're building and I'll come back with how I'd approach it and a realistic timeline.