Aleksandr Z.

C#/.NET developer. Top Rated with a 100% Job Success Score, 22 completed projects, and clients who keep coming back. I build desktop apps (WPF, WinForms, Avalonia), web backends and APIs, Blazor frontends, Unity games, Telegram bots and AI integrations. If it runs on .NET, I can build it. I'm Aleksandr, and I've been working on Upwork since 2024. A few real examples from my history: migrated a large commercial WinForms application to Avalonia, shipped developer tools for a game that's now on Steam, built a versioning system that runs across 34 Unity repositories, and tracked a nasty double-launch bug to its actual root cause. Desktop apps. WPF, WinForms, Avalonia, MAUI. Complex UIs, MVVM, DevExpress/Telerik, integrations with hardware and legacy systems. Installers, MSIX packages and Microsoft Store submissions are all part of the job. Backend and web. ASP.NET Core (Web API, gRPC, SignalR), Entity Framework, SQL Server or PostgreSQL, Blazor (Server and WebAssembly), Docker, Azure. I can build the API your app needs, or a Blazor frontend that matches your design. Unity. Gameplay programming, editor tools, release engineering. From small pilot tasks to long-term release engineering across dozens of repositories. AI and automation. Custom GPT integrations with JSON and XML datasets, a Word add-in with an AI-powered document editor, Telegram bots, scraping and parsing scripts. If it saves you time, I can automate it. A few things clients seem to value (one of them has hired me for 7 contracts in a row): • The code I hand over is maintainable: clean architecture, unit tests, documentation. Your next developer will thank you. • I keep clients updated daily, I give honest estimates, and if there's a cheaper way to solve your problem, I'll tell you about it. • I own problems end to end. "It works on my machine" is not something you'll ever hear from me. Got a project in mind? Send me a message. I usually reply within a few hours, and you'll get an honest assessment even if we don't end up working together.