.NET BackendEnterprise-grade backends built to last
We design and build .NET APIs, microservices, and background workers — architected for correctness, performance, and long-term maintainability. From greenfield systems to legacy modernisation.
.NET is Microsoft's open-source, cross-platform framework for building cloud-native applications, APIs, and microservices. With ASP.NET Core, Entity Framework Core, and a mature ecosystem of libraries, .NET delivers enterprise-grade reliability with modern developer ergonomics. At A Major, we architect .NET solutions that balance long-term maintainability with rapid feature delivery — from greenfield APIs to complex distributed systems. Whether you need high-throughput REST APIs, real-time SignalR hubs, or background processing pipelines, .NET's strong typing and rich tooling make it ideal for teams that value correctness. We bring deep experience with Clean Architecture, Domain-Driven Design, and Azure-native deployment patterns.
Quick start
dotnet new webapi -n MyApi
cd MyApi
dotnet runRead the full documentation at learn.microsoft.com/en-us/aspnet/core/
ASP.NET Core APIs
RESTful and minimal APIs with OpenAPI documentation, versioning, and built-in rate limiting.
Clean Architecture & DDD
Domain-Driven Design with clear boundaries — your business logic stays independent of frameworks.
Entity Framework Core
Typed queries, migrations, and optimised loading patterns — no N+1 queries reaching your database.
SignalR real-time
Bi-directional WebSocket communication for live dashboards, notifications, and collaborative features.
Background services
Hangfire or hosted worker services for scheduled jobs, event processing, and async workflows.
Azure-native deployment
Containerised workloads on Azure App Service, Container Apps, or AKS — with managed identity and Key Vault.
Why it's hard
Microservice boundaries
Splitting a monolith into .NET microservices requires careful domain analysis to avoid distributed monolith anti-patterns and excessive inter-service coupling.
EF Core performance tuning
Entity Framework Core makes data access easy but hides N+1 queries and cartesian explosions — production workloads need explicit query optimization.
Dependency injection complexity
Large .NET applications accumulate hundreds of DI registrations. Managing lifetimes, scopes, and circular dependencies requires disciplined architecture.
Azure cost management
Azure App Service, Container Apps, and AKS pricing varies significantly. Choosing the wrong hosting tier can double infrastructure costs without performance gains.
Best practices
Use Minimal APIs for simple endpoints
Minimal APIs reduce boilerplate for CRUD services — reserve full controllers for complex request pipelines.
Prefer IAsyncEnumerable for streaming
Stream large result sets with IAsyncEnumerable instead of materializing entire collections in memory.
Configure EF Core split queries
Use AsSplitQuery() for includes on collection navigations to avoid cartesian explosion in SQL output.
Centralize cross-cutting concerns in middleware
Logging, correlation IDs, exception handling, and rate limiting belong in the middleware pipeline, not in individual controllers.
Useful resources
Frequently asked questions
Related technologies
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Technical Consultancy
Not sure what you need? We'll help you figure it out before you spend a dollar
Want to build with .NET?
Talk to our engineering team about your .NET architecture. We'll respond within 24 hours.
We limit intake each month so every project gets the focus it deserves.