📍 Santiago, Chile · 5+ years building products at scale · 🟢 Open to new opportunities
I'm a full stack engineer with 5+ years of experience, including e-commerce platforms at Mercado Libre and Falabella, two of the largest tech companies in Latin America. I work across the whole stack: fast, accessible interfaces in React/TypeScript and solid APIs in Node.js, NestJS and Ruby on Rails.
- 🏗️ Interested in frontend architecture: micro-frontends, monorepos, design systems and web performance
- ☁️ Currently studying AWS (Solutions Architect Associate) and cloud infrastructure
- 🎓 MERN Stack certification, MIT xPro
- 🤝 Open to Senior Full Stack / Frontend roles, in Chile or remote
Frontend
Backend
Testing, cloud & tooling
- LotoStack: NestJS + React + PostgreSQL app that syncs Chilean lottery results and computes number-frequency statistics, with JWT auth and saved combinations.
- Hexagonal architecture with NestJS: a Users API built with ports & adapters, to practice clean backend design.
Micro-frontends (Module Federation) · Turborepo/Nx · Core Web Vitals · Advanced TypeScript · AWS SAA-C03
🇨🇱 En español
Soy Oscar Ballesteros, ingeniero Full Stack Senior en Santiago de Chile, con más de 5 años de experiencia, incluyendo Mercado Libre y Falabella. Construyo interfaces rápidas y accesibles con React/TypeScript y APIs robustas con Node.js, NestJS y Ruby on Rails.
- 🏗️ Me interesa la arquitectura frontend: micro-frontends, monorepos, design systems y performance web
- ☁️ Actualmente estudiando AWS (Solutions Architect Associate)
- 🤝 Abierto a oportunidades Senior Full Stack / Frontend, en Chile o remoto
📫 Conversemos: oscarballesteros.cl