Senior Mobile Engineer with 10+ years of experience building production-grade mobile applications.
iOS-focused, with strong background in Android and React Native.
I am a Senior Mobile Engineer currently focused on iOS development, with solid professional experience across Android and React Native.
My career started with early mobile technologies (J2ME), evolved into native Android, and later consolidated in iOS, where I have built and maintained complex, large-scale applications used in production.
I have worked across multiple domains, including fintech and payments, aviation, agribusiness, retail, and consumer marketplaces, including platforms focused on buying and selling used products.
I have strong experience with Design Systems, component libraries, and animations, helping teams scale UI consistently while maintaining high-quality user experience.
I am particularly interested in mobile architecture, performance optimization, low-level debugging, and computer vision, and I enjoy turning complex or manual workflows into reliable digital solutions.
- Mobile: Swift, SwiftUI, Objective-C, Kotlin, Android SDK, Jetpack
- Cross-platform: React Native
- Architecture: MVVM, MVP, MVC, MVVM-C, modularization, micro-frontend approaches
- Design Systems: scalable UI components, theming, animations
- Computer Vision & ML: OpenCV, CoreML, PyTorch
- Payments & Security: card tokenization, OTP, QR payments, encryption
- Performance & Stability: memory analysis, crash debugging, rendering optimization
- Tooling: Git, CI/CD, CocoaPods, SDK integration, App Store & Play Store releases
- Clean and maintainable architecture
- Native user experience and performance
- Well-defined design systems
- Stability, observability, and long-term scalability
- Collaboration between engineering, product, and design
- 🌐 Website: https://denisoliveira.com
- 💼 LinkedIn: https://linkedin.com/in/oliveiradenis
- 📫 Email: [email protected]