// 5 min
AI Context Checklist Part 2: What Actually Works
I wrote a checklist for working with AI. Then I actually used it for months. Here's what survived, what changed, and the workflow I run today.
AI Engineering Productivity Claude Code
Tech Lead & iOS Engineer
Hey, I'm
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.
Latest Thinking
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// 5 min
From Build to App Store in One Prompt: AI Skills That Ship
I built reusable AI skills to generate App Store icons, screenshots, and localized marketing — for iOS and Android. I didn't write a single line of code.
AI Engineering iOS Automation Claude Code
// 5 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. I made the decisions — the AI wrote the code.
Supabase iOS Serverless Architecture
My Work
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Side & Personal Projects
MarketCapy
A sarcastic daily market digest powered by a capybara. AI-generated roasts of crypto and stock market news.
Swift, SwiftUI, Supabase, Perplexity AI
Side & Personal Projects
Packybara
A Brazilian package tracking app with a pixel-art capybara companion that reacts to shipment status updates.
Kotlin, Jetpack Compose, Material3, Hilt
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