.NET Development
.NET is not one of several stacks we dabble in. It's the one every system we've shipped is built on, from a festival ticketing platform handling 50,000+ transactions to a workshop portal that replaced QuickBooks. If you need a .NET application built, rescued or upgraded, you'll be working with engineers who have spent 15 to 20 years on the Microsoft stack, including a lead developer role at Betfred.
New .NET Applications
Web applications, internal systems and multi-tenant SaaS platforms on .NET 10, the current long-term support release. ASP.NET Core APIs, Entity Framework Core, SQL Server or PostgreSQL, with React or server-rendered HTMX on the front end depending on what the product needs. Local development runs on .NET Aspire, and everything deploys to Azure through infrastructure-as-code.
Upgrades From .NET Framework
A lot of UK businesses still run on .NET Framework 4.x applications that nobody wants to touch. We assess what you have, then move it to modern .NET in stages, keeping the system running throughout. You get supported software, cheaper Linux or container hosting, and a codebase new developers can actually work on.
Taking Over an Existing System
If your developer has left or your agency has gone quiet, we can take over a .NET codebase. We start with a written health check covering security, dependencies, hosting and test coverage, fix what's urgent first, and then carry on developing it. You own the code and the Azure subscription throughout.
Real Projects
See this delivered for real clients
Production work we've shipped using our .net development practice. Click through for the full story: architecture, tech stack, and outcomes.
REBLL Tickets
A multi-tenant event ticketing platform with integrated payment processing, digital wallet passes, and a Flutter scanner app published on the App Store and Google Play.
RSRVD
A multi-tenant SaaS appointment booking platform for service-based businesses, with real-time availability, Stripe payments, and a complete business management dashboard.
Newtown Gates & Welding
A family workshop that has been making gates in Wigan since 1992, now with a website where customers design their own gate and see the price, and a portal that runs everything from the first enquiry to the final invoice.
Related insights
Read more on this
The thinking behind how we approach this service, written up from real client work.
Why We Use .NET Aspire for Local Development (And Why You Should Too)
A practical walkthrough of how we use .NET Aspire to orchestrate local development environments for multi-tenant SaaS applications on Azure, and why it's replaced Docker Compose in our toolbox.
Building a Self-Improving Document Classification Agent on Azure AI Foundry
A practical walkthrough of building an agentic AI system on Azure AI Foundry with persistent agents, human-in-the-loop approval, Cosmos DB vector memory, and a feedback loop that makes the agent smarter over time.
Frequently Asked Questions
Which versions of .NET do you work with?
New builds use .NET 10, the current long-term support release, which keeps you on a supported version until November 2028. We also work with older .NET Core versions and .NET Framework 4.x, usually as part of a staged upgrade to modern .NET.
Can you work on a .NET system another developer built?
Yes. We start with a short health check, usually one or two days at our consultancy rate, so you know what you're dealing with before committing to anything bigger. It covers the architecture, security, outdated packages, hosting costs and the riskiest areas of the code, written up in plain English with a prioritised list of what to fix.
Do you only build on Azure?
Azure is where we're strongest and what we recommend for most .NET workloads, with UK South hosting for data residency. Modern .NET runs happily in containers anywhere, so if you're already committed to AWS or another host we can discuss it.
How much does a .NET project cost?
A focused MVP starts from around £8,000, a full multi-tenant SaaS platform is typically £30,000 to £80,000, and larger enterprise builds go beyond that. Consultancy and health checks are £500 to £800 per day. The pricing page has the full breakdown.
Can a senior .NET developer join our team on a day rate?
Yes, through our technical consultancy service at £500 to £800 a day, for architecture, code reviews, upgrades or hands-on work on the hardest parts of your system. For a new system built from scratch, we'd normally suggest running it as a project with us instead, with one team accountable for the result.
Bespoke software development
How we scope, build and support custom software for businesses that have outgrown off-the-shelf tools.
Your software development team
The named, senior people who design, build, test and support your software.
Azure cloud infrastructure
Where our .NET applications run: Azure Container Apps, Bicep and GitHub Actions.
Start a conversation
Interested in .net development?
Tell us what you need and we'll come back within one business day. No commitment, no jargon, just a conversation about whether we're the right fit.
- A free, no-obligation first call
- A reply within one business day
- Straight from the people who'd build it
Prefer to talk? Call 01942 387009 or email [email protected]
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