I'm João José, a Software Engineer focused on fullstack development and distributed systems. I'm drawn to how systems and, more recently, agents communicate to solve real problems. Five years of experience, mostly in Node.js, NestJS and Python, with React and Next.js on the frontend.
One of my most recent projects was migrating a legacy Delphi ERP to multi-tenant NestJS microservices, covering e-commerce integration, tax document issuance and queue-based processing. Before that, I led IRIS, a Brazilian Sign Language (Libras) learning platform, from architecture to delivery. It's now used by more than 140 students across three public schools, in the classroom.
These days I'm building solutions with AI agents (LangChain, LangGraph) and computer vision. It's the direction I've been studying, applying and going deeper into.
Nothing makes me happier than seeing something I designed actually being used. If you're building something like that, let's talk.


