Oleksii A.

Passionate cross-platform mobile app developer with 7+ years of experience building high-quality apps using Flutter and .NET MAUI. I specialize in delivering reliable, scalable, and user-friendly mobile solutions across iOS and Android. Core expertise includes: * Flutter (Dart) * .NET MAUI (C#) * Designing and integrating RESTful APIs * Bluetooth/BLE communication, Firebase, push notifications, VoIP, CallKit, and native platform services * CI/CD pipelines using Azure DevOps, App Center, and automated delivery via TestFlight / Google Play Console * App Store / Google Play publishing and release management * Writing maintainable UI and unit tests to ensure code quality and stability I focus on clean architecture, performance optimization, and smooth user experience, from concept to deployment and ongoing maintenance.