.NET 5.0/6 Jobs

I already have the full source code for a desktop .NET application and I’m happy with its functionality, but it feels sluggish. What I’m looking for is a focused performance pass aimed purely at speed—no new features or bug-hunting, just making the existing code run faster. Right now the two problem spots are: • Data-intensive routines that slow to a crawl when large datasets are loaded or complex calculations run. • User-interface lag; controls hesitate and redraw slowly while those same heavy operations are happening. You’re free to suggest profiling tools such as Visual Studio Profiler, dotTrace, or PerfView; whatever pinpoints bottlenecks most effectively. Once identified, I’d like you to refactor the hotspots—algorithm tweaks, async/aw...

We are looking for an experienced Windows Server / IIS / Azure specialist to configure an existing Azure Virtual Machine for a production web application stack. We already have an active Azure account and the VM is provisioned. Your role will be to complete the server setup cleanly, securely, and in a production-ready state. You will work closely with our lead developer, who will provide guidance, credentials, and real-time assistance throughout the process. ### Scope of Work On the provided Azure Windows VM you will: - Install and configure **IIS** to host a **.NET 7 Web API** as the primary (root) site. - Configure the same IIS website to also serve a **React client application** on port **8080**. - Enable free HTTPS using a trusted certificate (Let’s Encrypt) via **win-acme**...

I need an experienced software engineer to design, code, and package a Windows-only desktop application whose core purpose is to boost user productivity. The interface should feel modern yet lightweight, launching quickly and remaining unobtrusive while running in the background. You will take the project from concept to final installer, including UI/UX design, core feature implementation, local data storage, and basic update handling. Please choose the language and framework you are most comfortable with on Windows (for example C#, .NET 6/7, WPF, WinUI 3, Electron, or another proven stack) and explain why it is the best fit for maintainability and performance. Key deliverables • Compiled executable and a click-through installer that works on Windows 10 and 11 • Complet...

I need a seasoned .NET backend developer to build a suite of RESTful APIs that will power our next release. The core of the job is pure API development—no UI work—so you should feel completely at home writing clean, well-structured C# code in .NET (preferably .NET 6 or later), wiring it up with Entity Framework or Dapper for data access, and documenting everything with Swagger / OpenAPI. Here’s what the APIs must handle: • User authentication (token-based, ideally JWT) • Full CRUD operations for our primary data models • Smooth third-party integrations, starting with two vendors that expose JSON endpoints I’ll provide the database schema, access credentials, and a concise list of integration endpoints on kickoff. You’ll return: 1. So...

My production C# application currently targets .NET Framework 4.8 and has started to show its age. I need it migrated to a supported, more secure runtime (ideally the latest LTS release of .NET), with every dependency updated and any obsolete APIs refactored. The primary driver is security: I want all outstanding vulnerabilities removed, HTTPS enforcement tightened, and modern authentication/cryptography practices adopted throughout the codebase. During the upgrade I also want to introduce a clean integration layer so the app can talk to external systems (REST and, if feasible, simple message-queue endpoints). This should be implemented in a way that keeps the core logic decoupled and unit-testable. Finally, a handful of persistent UI glitches—visual misalignments and sporadic cont...