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dan-oliveiraa/README.md

Hi, I'm Daniel! 👋

I'm a Software Engineer from Brazil 🇧🇷
Focused on Flutter, Kotlin, Payments & High-Reliability Mobile Systems


👨‍💻 About

  • 📱 Mobile Engineer specialized in Flutter & Kotlin
  • 💳 Working with payments, NFC/Mifare, QR Code and Digital Wallets
  • 🧠 Strong focus on Clean Architecture, Hexagonal (Ports & Adapters) and MVVM
  • 🚀 Experience building offline-first systems used by millions of users
  • 🤝 I enjoy teamwork, mentoring, and solving complex real-world problems

🛠 Programming Languages & Tools

Clean Architecture Hexagonal Architecture MVVM DDD TDD BLoC GoRouter


💳 Payments & Transport Systems

  • Debit & Credit cards
  • Pix & QR Code
  • Apple Pay & Google Pay
  • NFC / Mifare (public transport validation)
  • Acquirer integrations (Cielo, ADIQ, Dock, Sigo)

🧪 Testing & Quality

  • Unit, Widget and Integration Tests
  • Mocktail
  • Automated UI tests (Appium + Robot Framework)
  • CI/CD with Azure DevOps

📚 Currently studying

French System Design AI Assisted Development Kotlin Compose


🌐 Languages

  • 🇧🇷 Portuguese — Native
  • 🇺🇸 English — Full Professional
  • 🇫🇷 French — Limited Working

🔗 Social

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