.NET Development Services
.NET is Microsoft's cross-platform framework for APIs, web applications, and background services. We build new ASP.NET Core systems, move applications stuck on .NET Framework onto a supported LTS release without stopping the business, and run them on Azure or AWS depending on what your data and your bill actually require.
Our .NET Development Services
Building new .NET systems, and getting older ones off runtimes that no longer receive fixes
ASP.NET Core APIs & Web Apps
Cross-platform services and web applications on current LTS .NET, built to run on Linux containers rather than a Windows server nobody wants to patch.
- Minimal APIs & MVC
- Clean architecture
- OpenAPI contracts
.NET Framework Modernization
Move applications stuck on .NET Framework onto a supported LTS release, in stages, with the business running throughout.
- Framework to .NET LTS
- Incremental strangler migration
- Dependency and API remediation
Legacy Integration & Replacement
Replace or wrap the WCF services, SOAP endpoints, and Web Forms screens that block everything else from moving.
- WCF and SOAP replacement
- Web Forms to modern UI
- Anti-corruption layers
Data & Entity Framework Core
Data access that survives load: query performance, migrations you can roll back, and a schema that reflects how the business actually works.
- EF Core & Dapper
- SQL Server & PostgreSQL
- Migration and rollback safety
Azure & AWS Delivery
Run .NET where it makes sense for your data and your bill, whether that is Azure App Service, AKS, or containers on AWS.
- Azure App Service & AKS
- AWS ECS and Lambda
- CI/CD pipelines
Blazor & Front-End Options
Blazor when your team is .NET end to end, React or Next.js when the hiring pool and ecosystem matter more. We will say which applies.
- Blazor Server & WebAssembly
- React front ends on .NET APIs
- Honest framework selection
Why Modernizing .NET Pays Off
Getting onto a supported .NET release is rarely about the version number, it is about security patches, hosting cost, and being able to hire
Off Unsupported Runtimes
Running on a .NET version that no longer receives security fixes is an audit finding waiting to happen, and it gets harder to escape every year
Cheaper To Run
Modern .NET on Linux containers removes Windows licensing from the hosting bill and starts fast enough to scale down when idle
Easier To Staff
Engineers who will happily work on current .NET are considerably easier to hire than engineers willing to maintain Web Forms
Able To Change Again
The point of modernization is not the version number, it is that the next feature stops taking three months
Our Proven Development Process
A migration process designed so the business keeps running while the platform changes underneath it
Audit & Plan
We map dependencies, find what actually blocks the upgrade, and produce a sequenced plan with the risky parts named.
Incremental Migration
Slice by slice behind a facade, so the application keeps shipping instead of disappearing into a rewrite.
Testing & Hardening
Characterisation tests around legacy behaviour first, then automated coverage and load testing before cutover.
Cutover & Support
Staged rollout with a rollback path, monitoring in place, and ongoing maintenance afterwards.
Our .NET Technology Stack
Using the Svelte ecosystem to build fast, modern web applications
Core Framework
Styling
Tools & Testing
Flexible Engagement Models
Choose the engagement model that best fits your project requirements and budget
Modernization Project
A scoped migration off an unsupported runtime, with a fixed plan
- Audit and sequenced plan
- Fixed estimate after discovery
- Business runs throughout
Dedicated Team
Senior .NET engineers working exclusively on your product
- Full-time dedicated engineers
- Direct communication & control
- Scalable team size
Time & Material
Pay for actual time spent, with complete transparency
- Flexible scope & requirements
- Transparent billing
- Great for ongoing maintenance
.NET Development FAQs
Straight answers to what CTOs and engineering leads ask before starting .NET work
Should we modernize our .NET Framework application or rewrite it?
Rewrites fail far more often than teams expect, because the old system encodes years of undocumented business rules that nobody can fully restate. Our default is an incremental migration: put a facade in front, move one slice at a time onto a supported .NET release, and keep the application shipping. We recommend a rewrite only when the existing code is genuinely beyond salvage, and we will say so plainly if that is what we find in the audit.
Should a new backend be .NET, Python, or Node?
.NET is the strongest fit when you already have C# people, when you are integrated with the Microsoft estate, or when you want a fast statically typed runtime with a mature standard library. Python wins when the work is data-heavy or AI-heavy, because that ecosystem lives there. Node wins when one JavaScript codebase across frontend and backend matters most. We build in all three, so the recommendation follows your team and your integrations rather than our preference.
Can you get us off an unsupported .NET version?
Yes, and this is one of the more common reasons clients call us. Running on a release that no longer receives security patches tends to surface first in a customer security questionnaire or an audit. The work is usually dependency remediation, replacing APIs that were dropped, and dealing with anything tied to Windows-only behaviour. We sequence it so the riskiest dependency is proven early rather than discovered at the end.
Do we have to move to Azure?
No. Modern .NET is cross-platform and runs perfectly well in Linux containers on AWS, which is where a lot of our infrastructure work already sits. Azure is often the smoother path if you are already invested in Microsoft identity and tooling. We will lay out the cost and data-residency implications of each rather than assuming .NET means Azure.
Blazor or React for the front end?
Blazor is a real option when your team is .NET end to end and you would rather not maintain a separate JavaScript stack. React or Next.js is the safer choice when you need the component ecosystem, or when you want to hire frontend engineers from the largest available pool. The honest tiebreaker is usually who will maintain it in two years, not which is technically nicer.
Can you work alongside our existing .NET team?
Yes. A frequent arrangement is that we take the modernization track while your team keeps delivering features, so the roadmap does not stall for the length of the migration. We work in your repository, follow your review process, and document the patterns as we go so your engineers can carry the work forward.
What drives the cost of a .NET modernization?
Mostly the number of external integrations, how much logic sits in stored procedures or Web Forms code-behind, whether there is any existing test coverage, and how much of the codebase depends on Windows-only APIs. Authentication and reporting are the two areas that routinely take longer than teams estimate. We run a short audit first and give a fixed estimate from it, rather than quoting off a feature list.
Ready to Build or Modernize Your .NET Application?
Book a free consultation. We will audit what you have and tell you whether it is a migration or a rebuild before quoting anything.