.NET Development
.NET applicationsbuilt to last.
The .NET platform is Microsoft's most mature, best-supported server stack — and the right choice for APIs, background services and enterprise applications that need to run reliably for years without an author present.
What we provide
Stable, maintainable .NET services and APIs built for the long run.
- ASP.NET Core REST and gRPC APIs
- Blazor Server and WebAssembly applications
- Azure Functions and Durable Functions
- Windows services and long-running background jobs
- SignalR for real-time push notifications
- Entity Framework Core and Dapper data access
- Entra ID (Azure AD) authentication and authorisation
- Third-party API integration and adapter layers
Why Theerrv
First-class .NET expertise
We build on ASP.NET Core, Blazor and Azure Functions daily — not occasionally. .NET is our primary server-side discipline.
Azure-native deployment
Your .NET services are deployed to Azure App Service, Container Apps or AKS — whichever the scale warrants — with CI/CD from day one.
Maintainable by design
Conventional patterns, proper dependency injection and written architecture records — so any competent .NET developer can inherit the system in three years without needing us.
Our approach
Discovery → Architecture → Development → Testing → Deployment → Support
Requirements and API contract design
Endpoints, data schemas, error models and versioning strategy documented as OpenAPI spec and agreed before implementation begins.
Architecture and data model
Domain model, service boundaries, database schema and Azure deployment topology decided on paper. Architectural decisions recorded with reasoning.
Development in sprints
Incremental builds with automated unit and integration tests, peer code review, and a staging environment from the first sprint.
Testing and QA
xUnit test suite, integration tests against real database and message broker, contract tests for third-party integrations.
Azure deployment and CI/CD
Infrastructure defined in Bicep, deployed by Azure Pipelines or GitHub Actions. Environments promoted through a pipeline, never by hand.
Monitoring and handover
Application Insights wired in, runbooks written, support arrangement agreed. You are handed the keys with the alarm system active.
Technologies
The stack we use to deliver .net development — chosen for longevity and maintainability, not trend.
- C#
- .NET 8 LTS
- ASP.NET Core
- Entity Framework Core
- Dapper
- SQL Server / Azure SQL
- Azure Functions
- Azure Service Bus
- Blazor
- xUnit
Industries & use cases
Financial Applications
- Transaction processing APIs with audit trails
- Financial reporting and reconciliation services
- Compliance-grade data handling and encryption
Internal Business Systems
- ERP integrations and data synchronisation services
- Approval workflow and notification engines
- Legacy .NET application modernisation
SaaS Products
- Multi-tenant API backends
- Subscription and billing integration services
- Webhook and event delivery infrastructure
Analytics Platforms
- Data ingestion and transformation services
- Background aggregation and reporting jobs
- Real-time event streaming consumers
Common questions
Which version of .NET do you build on?
We build on .NET 8, the current long-term support (LTS) release. LTS releases receive security and quality patches for three years, making them the right choice for production systems. We do not build on preview releases or short-term support versions unless you have a specific reason that justifies the risk.
Can you modernise an existing .NET Framework application?
Yes. We begin with a technical assessment of the existing codebase — framework version, dependencies, database coupling, test coverage — and we propose an incremental migration path. A big-bang rewrite is rarely the right answer; we look for the smallest change that moves the system forward meaningfully.
Can you migrate a .NET application to Azure?
Yes. We assess the application's deployment assumptions, design the target Azure architecture, and migrate incrementally — typically lift-and-shift first to reduce risk, then optimise for cloud-native patterns once it is running. Infrastructure is defined in Bicep so environments are reproducible and the migration is reversible.
Do you work with Blazor, or only Web API?
Both. We build Blazor Server applications where server-side rendering and real-time updates are the priority, and Blazor WebAssembly where the application needs to run offline or reduce server load. We will recommend the right model based on your users' connectivity and the application's data access patterns.
Related services
Start here
Tell us what theoperation is costing you.
A first conversation is a conversation, not a pitch. Describe how the work runs today and we will tell you plainly whether software is the right answer — and what it would take.
Or reach us directly at info@theerrv.com