Oleksandr

Migrated two production mobile applications from Xamarin.Forms to .NET MAUI, addressing technical debt and modernizing the codebase.

Built cross-platform UI (.NET MAUI + WPF) using MVVM and reusable components, enabling a single codebase for mobile and desktop clients. Optimized UI rendering and background data processing, reducing average screen load times by ~20%. Designed MVVM architecture using library MPowerKit, cutting new feature dev time by ~25% Improved lists scrolling experience using MPowerKit.VirtualizeListView.

Led mobile and BE teams of 6 developers while delivering new features. Developed social auth (OAuth) and social integration into the system on both mobile and BE sides.

Led a 3-person development team, coordinating tasks and ensuring on-time delivery of key features. Designed a browser-like tabbed layout where each tab kept its own navigation history, allowing users to jump directly to history items. Improved application performance by optimizing rendering for large HTML/SVG-based technical documents. Delivered cross-platform support (desktop and mobile), enabling access to aircraft manuals in the field without internet.

Improved POS reliability by reimplementing MVVM structure. Introduced CQRS pattern to clearly separate read and write operations, simplifying code maintenance and enabling easier feature extensions Optimized workflows for vehicle recognition and PoS transactions, reducing processing errors and improving user experience.

Designed and implemented touch-screen optimized UI working on kiosks. Built robust offline sync mechanisms with Wi-Fi connectivity fallback, ensuring uninterrupted workflow Built medical imaging/filtering app

Delivered field inspection apps with photo capture, reporting, and data sync against an ASP.NET Core Web API backend. Improved app scalability and stability by reimplementing MVVM structure.