Jhonatan Alves

Jhonatan Alves

Software Engineer

I'm a software engineer from Brazil 🇧🇷 focused on writing reliable, well-tested code. Currently, I'm working as a software engineer at dooor.ai.

Lately I've been diving deeper into system design and data structures & algorithms. I mostly work with TypeScript, React, and Next.js.

Experience

Software Engineer · Dooor

2025 — Present

Building end-to-end features for a privacy-first AI platform, from interface to infrastructure, with a strong focus on auditability and data sovereignty.

Full-stack Developer · I9 TI Solutions

2022 — 2025

Grew from intern to mid-level engineer, shipping web applications end-to-end for internal and client projects, and improving how large-scale forms were built and handled.

Projects

Clean Architecture

A study project exploring clean architecture with a layered, well-tested TypeScript API.

TypeScriptExpressJest

Modular Monolith

A study of modular monolith architecture, with clear module boundaries in TypeScript.

TypeScriptExpressJest

Domain-Driven Design

A hands-on project practicing Domain-Driven Design and domain modeling.

TypeScriptSequelizeJest