// about.me

The long way to Kotlin.

Brazilian, Halifax-based, Android-focused. Started programming at 12 on a MU server for my cousins. Haven't stopped since.

Rafael Tonholo writing at his desk.

Ever since I was little, I've been fascinated with technology - spending hours customizing my parents' computer and trying to make it my own.

My first real contact with programming was at twelve, when I decided I wanted a private MU server for me and my cousins. I didn't know what I was doing. The server was unstable. The cousins were thrilled.

2010 - first Android build

High school technical program, first Java class, and an Android SDK that was still very young. I built a barely functional TODO app. It crashed on rotation. I was hooked.

2015 - full-time mobile

After a few years of full-stack work - .NET in healthcare and marketing, then cross-platform surveys - I realized I only wanted to work on what I could hold. Android became the focus. Kotlin landed the next year and never left.

2021 - Pinterest

First time working on a codebase with millions of users and nine years of history. A 30-minute clean build became a personal vendetta. Modularizing it - incrementally, without a freeze - taught me more about architecture than any book ever has.

Today

Most recently built Thunderbird for Android at Mozilla - Kotlin-first, privacy-first, Compose-forward, and shipping in the open. Now open to new opportunities in senior mobile engineering and architecture.