About

Feel free to reach out — about code, an idea, or just to say hello.

Get in touch

I'm a software developer based in Brazil. I like turning messy, complex problems into software that's simple to use and easy to maintain — and I write about what I learn along the way.

A few things I've built — from productivity tools to mobile apps and small games.

Projects

What I work with

Journey

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Articles about software development, architecture, best practices, and experiences shared throughout my journey as a developer.

Open-source projects and personal experiments I build in my spare time.

Tech Lead & Full-Stack Developer specialized in .NET, Kotlin and React/TypeScript, with experience in software architecture, DevOps and cloud.

Willians Tavares

A modern project estimation tool with configurable technical overhead percentages, task/subtask management, sprint planning and Excel/CSV export capabilities.

EstimaTech

My personal hub built with Next.js, TypeScript and multi-language support (PT/EN).

willianstavares-hub

Android application for precise tuner and metronome, designed for musicians.

Simple Tuner & Metronome

Desktop application for Notebook/PC testing and diagnostic.

PC Diagnostic

Mobile game to improve musical perception through interactive exercises.

Ear Training Game

Command line tool to check for dependency updates in Node projects.

Update Check

Android app developed as a FIAP final project.

CarBom App

Template for creating Azure DevOps extensions.

Azure Extension Template

Game built with the Godot engine using GDScript.