Ruslan H.
Senior .NET Engineer | C#, WPF, MAUI, ASP.NET | Web, Desktop & AI
I build and ship production software faster by pairing 10+ years of .NET/web/desktop engineering with agentic workflows built on Claude AI and Claude Code, without trading away architecture, tests, or maintainability. Whether you need an MVP from scratch, a legacy system modernized, or AI agents integrated into your product, I take ownership end to end. 🔹 What I do • Agentic development: Claude Code with subagents, custom commands, hooks, and project-level CLAUDE.md conventions, so AI output follows your architecture and standards. • AI features & agents in your product: Claude API (tool use, structured outputs), MCP servers, RAG, and human-in-the-loop workflows. • Legacy modernization: AI-assisted migration from .NET Framework/WCF/WinForms to modern .NET, with characterization tests first. • System architecture & full-stack: scalable backends, APIs, web and high-performance desktop apps. • Critical systems: real-time, industrial, and computer-vision software where reliability is non-negotiable. 🔹 How I work with AI (and keep quality high) • Spec first, then agent: clear requirements and acceptance tests before code generation. • Every AI-generated change is reviewed by me; tests and CI gates are the contract. • Automated PR review and test generation in GitHub Actions. • Security-conscious: no secrets in prompts, scoped permissions, careful handling of your private code. 🔹 Core expertise 🤖 AI & agentic development • Claude AI, Claude Code, Anthropic API, MCP, AI agents, subagents • Prompt & context engineering, tool use, RAG, LLM integration ⚙️ Backend & system development • C#, .NET, .NET Framework, .NET Core, C++ • ASP.NET MVC, ASP.NET Core, WebAPI, WCF, SignalR • Entity Framework, ADO.NET, LINQ • Architecture, domain design, scalability, performance 🌐 Web development • HTML, CSS, JavaScript, TypeScript • AngularJS, Angular 2+, Vue, Blazor, MudBlazor • LESS, SASS, AJAX, jQuery, Bootstrap • DevExpress, DevExtreme, PrimeNG, RxJS • Chrome Extensions 🖥️ Desktop development • WPF, WinForms, XAML, Prism • Xamarin Forms, MvvmCross • Windows desktop applications 💾 Databases & storage • MS SQL Server, SQLite, MySQL, MongoDB • Data modeling, optimization, migrations 📱 Mobile & cross-platform • .NET MAUI (iOS, Android), Xamarin Forms, MvvmCross 🧪 Testing & quality assurance • NUnit, xUnit, SpecFlow, Selenium, FlaUI, Atata, TDD, BDD 🛠️ Development process • Scrum, Agile • Jira, Trello • Git, GitHub Actions, TFS, SVN, Azure DevOps • Visual Studio, NetBeans 🎯 Ideal project fit • MVPs and product foundations built fast but properly. • Adding AI/agent capabilities to an existing product. • Modernizing legacy .NET and desktop systems. • Internal business tools, industrial and real-time software. If you want a senior engineer who uses AI agents as a force multiplier and still owns architecture and quality, let's talk.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $35k
Billed in all: $394,093$394k
$35k in the last 6 months
Across 19 contracts
Earnings, last 30 days
Skill rankings: Top 1% in HTML
Ranked by MRR among everyone on Upwork with the skill.
- Model View ViewModel228 freelancers · 🇺🇦 #2Top 1%🇺🇦#2 of 24
- #4Windows Communication Foundation146 freelancers · 🇺🇦 #1Top 3%🇺🇦#1 of 6
- #9Windows App Development298 freelancers · 🇺🇦 #1Top 3%🇺🇦#1 of 22
- #11Windows Presentation Foundation398 freelancers · 🇺🇦 #4Top 3%🇺🇦#4 of 32
- #65ASP.NET2,819 freelancers · 🇺🇦 #9Top 2%🇺🇦#9 of 129
- #67.NET Framework2,944 freelancers · 🇺🇦 #9Top 2%🇺🇦#9 of 189
- #180AI App Development4,708 freelancers · 🇺🇦 #10Top 4%🇺🇦#10 of 248
- #183C#8,348 freelancers · 🇺🇦 #15Top 2%🇺🇦#15 of 422