.NET Web API — New Feature With Clean Architecture & Swagger | From $299
Need a new REST controller, a background service, or an integration with a third-party API in your ASP.NET Core application? Our .NET developers deliver clean, tested C# code — with proper dependency injection, validation, error handling, and Swagger docs — as a pull request ready for your review.
New feature or endpoint for your ASP.NET Core application. Clean architecture, Entity Framework integration, Swagger documentation. Integrates with your existing codebase.
- ✓New endpoint/feature development
- ✓Clean architecture (controllers, services, repositories)
- ✓Entity Framework Core integration
- ✓Swagger documentation + integration tests
We'll confirm the exact price within 2 hours and send a PayPal invoice
Deliverables Included
Ready to Get Started?
New feature or endpoint for your ASP.NET Core application. Clean architecture, Entity Framework integration, Swagger documentation. Integrates with your existing codebase.
Who This Service Is For
Technologies We Use
Our Process — 4 Simple Steps
Scope Discussion
Share your requirements, existing codebase structure, and conventions.
Development
We write clean, production-ready C# code following your project patterns.
Testing & Review
Unit tests written, PR submitted for your review.
Delivery
Code merged, documentation updated, handover complete.
Why .NET Web API Development Matters for Your Business
Building Enterprise-Grade APIs with .NET: Who Needs Professional Web API Development and Why Architecture Decisions Define Success
Learn why .NET is the natural choice for enterprise APIs and how proper architecture prevents costly technical debt.
Read the Full GuideFrequently Asked Questions
We work with .NET 6, 7, and 8. For new code, we use .NET 8 (current LTS). We also maintain legacy .NET Framework 4.x projects if needed.
Yes — we review your project structure, existing patterns (Clean Architecture, MVC, Minimal API), and coding conventions, then add the feature in a consistent style.
Yes. Azure Blob Storage, Azure Service Bus, Azure AD/Entra ID, and Azure Functions integration is in scope. Add a note in your order.
Unit tests with xUnit or NUnit are always included. Integration tests with TestContainers.NET can be added as extended scope.
Yes. SignalR hub setup for real-time notifications, live data updates, or chat features can be included as part of this service. Specify your requirements during consultation.
This service includes a 14-day warranty. If anything doesn't work as specified after delivery — we fix it at no extra cost. No questions asked.
A senior engineer with 5+ years of hands-on experience. We never assign junior staff or subcontractors to fixed-price services.
Click 'Order Now', complete the secure PayPal payment, and we'll contact you within 24 hours to confirm scope and collect access details.
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.NET Web API Development — Feature Addition or New Endpoint — from $299, 3–5 day Delivery
Senior engineers only. Fixed price. 14-day warranty. No surprises.
We'll confirm the exact price within 2 hours and send a PayPal invoice
Or email us directly: [email protected]