// About
Developer. QA. Builder.
Automator. Strategist.
I'm Jhonatas Matos — developer with 10+ years in tech. I build modern web solutions, automations and AI-powered systems with quality engineering baked in from the first line of code.
I started in software quality — learning how to break systems before building them. After years as a QA Engineer, I expanded into full-stack development. Not as a career change, but as an upgrade.
Today I work as a freelance developer combining web development, business automation and AI-applied solutions — all grounded in a decade of quality engineering. That combination is rare: I write code that ships and I know how to verify it actually works in production.
I work primarily with React, Next.js, TypeScript, Node.js and Playwright. I also build automation workflows, integrate AI into existing products, and connect systems that shouldn't be siloed. Every project delivers tested, production-ready software.
// Skills & Tech
Frontend
Backend
Testing & QA
AI & Automation
Tools & Platforms
// How I work
Quality first
I don't ship code I haven't tested. Every deliverable includes automated tests or a documented QA process.
Clear communication
I keep clients updated throughout the project. Scope, timeline and progress are always visible.
Pragmatic decisions
I choose the right tool — not the trendiest one. AI and automation only where they genuinely add value.
Want to work together?
Get in touch