Based in Brazil
Tech Lead & iOS Engineer

Hey, I'm
rafa.

I build and ship iOS apps — and help teams adopt AI tooling that actually works.

17 years building software. 8 years focused on iOS — from fintech to fitness, startups to scale-ups.

Get in Touch Book a Call
Latest Thinking View all →
// 8 min

How I Replaced a $20/Month Server with $1.50 in Serverless

Migrating MarketCapy's backend from a DigitalOcean droplet to Supabase Edge Functions, pg_cron, and Perplexity API.

Supabase iOS Serverless Swift
// 5 min

Why I'm Writing About AI-First Engineering

The 17-year setup, the shift, and why I'm writing about it now.

AI Engineering Opinion
// 12 min

GitHub Copilot Custom Agents vs Skills

Two ways to customize Copilot behavior in VS Code — and when to use each.

Development AI VS Code iOS
My Work View all →
Side & Personal Projects

Hashpulse

Real-time crypto-price monitoring with AI-generated market summaries. Discontinued.

Swift, SwiftUI, CoinGecko API, WebSocket
Side & Personal Projects

CapyCast

A minimalistic pixel-art weather app with a capybara mascot that reacts to weather conditions.

Swift, SwiftUI, WeatherKit, Jetpack Compose
Full-time Role

ThoughtWorks (Agriscience Client)

Mobile Tech Lead — leading the mobile team for a major agriscience client, driving architecture, stakeholder management, and AI adoption.

Swift, SwiftUI, Architecture, AI Workflows
Full-time Role

ThoughtWorks (Fitness Startup Client)

Senior iOS Engineer at ThoughtWorks — worked on a flagship fitness iOS app used by millions of subscribers, tackling hardware integration and real-time streaming.

Swift, SwiftUI, UIKit, Real-time Streaming
Full-time Role

Autio

Senior iOS Engineer, now Advisor — SwiftUI/UIKit feature development, CarPlay, MapKit, and Netflix partnership for a top-ranked GPS audio app.

Swift, SwiftUI, UIKit, CarPlay
Full-time Role

SmartValor

Sole iOS Engineer — architected and shipped a crypto-exchange mobile MVP under tight timelines for a Swiss fintech platform.

Swift, SwiftUI, MVVM, GraphQL