Zencloud TechnologiesZencloud Technologies
Need a .NET developer who can work inside your codebase from the first week? We place experienced engineers for ASP.NET Core, APIs, Azure, and legacy upgrades, on a month-to-month basis.
You interview them and direct the work. We handle contracts, equipment, and ongoing support.
Select a Date & Time
Microsoft ends support for both on November 10, 2026, and recommends moving to .NET 10, a long-term support release supported through November 2028. Your apps keep running after that date, but they stop receiving security fixes and technical support. If the upgrade isn't planned yet, now is the time. Source: Microsoft .NET support policy.
Most teams look for .NET help in one of these situations.
The deadline is fixed, and your own team may be busy with the roadmap. An extra engineer can own the upgrade while everyone else keeps shipping.
Older applications built on .NET Framework often rely on libraries and hosting models that don't carry over directly. Moving them takes planning, testing, and someone who has done it before.
A new service needs sound structure from the start: clear API design, authentication, data access, and a deployment pipeline that works.
Slow endpoints, tangled dependencies, and fear of releases are signs that the codebase needs attention, not just more features.
Moving to Azure is more than lifting a server. Configuration, secrets, scaling, and monitoring all need deliberate choices.
A departure leaves a gap in knowledge and capacity. A skilled engineer can cover the work while you hire for the long term.
Controllers, Minimal APIs, Razor Pages and Blazor, with REST and gRPC endpoints, versioning, validation, and consistent error handling.
App Service, Azure Functions, Service Bus and Key Vault, containerized deployments, and infrastructure defined as code so environments stay consistent.
Migrations, query tuning, indexing, and avoiding common problems such as N+1 queries, so the database stays fast as data grows.
ASP.NET Core Identity, OAuth 2.0 and OpenID Connect, policy-based access rules, and safe handling of secrets and tokens.
Moving .NET Framework applications to modern .NET, replacing older components, and migrating in stages so the business keeps running.
Unit and integration tests with xUnit, and build and release pipelines in Azure DevOps or GitHub Actions, so releases are repeatable.
Profiling, caching, correct use of async code, logging and monitoring, so problems are found before users find them.
The effort depends on where you're starting. Here's how we usually think about it.
List every project, its target framework, the NuGet packages it uses, and any Windows-only dependencies. This inventory decides how big the job really is.
Moving from .NET 8 or .NET 9 is often a retarget: change the target framework to net10.0, update packages, then run your tests. Moving from .NET Framework is a larger piece of work. You can port in place, or migrate piece by piece while the old and new systems run side by side.
Automated tests, a staging environment, a gradual rollout, and a rollback plan keep the upgrade from becoming a risky big-bang release.
Not sure whether to upgrade, refactor, or rebuild? Our guide to the real cost of rebuilding a legacy system can help you decide.
Use these questions with us or with any provider. Strong answers show real experience, not memorized definitions.
| Question | What a strong answer covers |
|---|---|
| What goes wrong if a singleton service depends on a scoped service? | The lifetime mismatch (a captive dependency), why the scoped service lives too long, and how scope validation catches it. |
| How do you avoid N+1 queries in EF Core? | Eager loading with Include, projection to only the needed columns, split queries where suitable, and checking the generated SQL. |
| Why is blocking on async code with .Result a problem? | Thread pool starvation under load, and deadlocks in older ASP.NET and UI code. Use async all the way through. |
| How would you secure an API with JWT bearer tokens? | Validating signature, issuer, audience, and expiry, using the identity provider's signing keys, short token lifetimes, and authorization policies. |
| How do you change a database schema without downtime? | Expand and contract migrations: add the new structure, deploy code that supports both, move data, then remove the old structure. |
| How would you plan an upgrade from .NET Framework 4.8 to .NET 10? | Dependency inventory, a staged approach, test coverage first, handling Web Forms or WCF, and a rollback plan. |
| An endpoint is slow in production. What do you do first? | Measure before changing: logs, traces and metrics, then the database queries, then caching or code changes. |
What goes wrong if a singleton service depends on a scoped service?
How do you avoid N+1 queries in EF Core?
Why is blocking on async code with .Result a problem?
How would you secure an API with JWT bearer tokens?
How do you change a database schema without downtime?
How would you plan an upgrade from .NET Framework 4.8 to .NET 10?
An endpoint is slow in production. What do you do first?
Five steps, from your brief to your first commit.
Tell us your .NET version, the main technologies, what you're trying to achieve, and when you need someone.
A 30-minute call to understand your architecture and constraints. If we're not the right fit, we'll say so.
We send profiles matched to your stack and your team's way of working, usually within about a day of the call.
Use your usual process: a conversation, a pairing session, or a take-home task. Nobody joins without your approval.
We handle contracts and equipment while you set up repository and tool access. Most teams have the engineer working within a week or two.
All options run month to month.
A dedicated full-time .NET developer inside your existing team, working in your tools and reporting to your lead.
Two to five engineers with a senior lead, suited to an upgrade, a migration, or a new service.
A full delivery team, including QA and delivery management, for a product area you want owned end to end.
Learn more about our staff augmentation service.
Hiring .NET Developers: what to know
Pricing is usually a monthly rate per engineer. It depends on seniority, the technologies involved, time-zone needs, how long you need the engineer, and the team size. We give you a clear quote after the scoping call.
A .NET developer designs, builds, and maintains applications on Microsoft's .NET platform: web apps and APIs with ASP.NET Core, cloud services on Azure, background jobs, data access, and integrations. On enterprise teams, they also handle security, testing, and upgrades.
.NET Framework is the original, Windows-only platform. It is still supported, but new features no longer land there. .NET Core was the cross-platform rewrite, and since version 5 it is simply called .NET. New work should target modern .NET.
Microsoft recommends .NET 10, a long-term support release supported through November 2028. Both .NET 8 and .NET 9 reach end of support on November 10, 2026.
We can supply an engineer or a small team for the upgrade period and scale back afterwards. If you want a fixed-scope upgrade instead, tell us on the scoping call, and we'll say which model fits.
We send profiles within about a day of the scoping call if we have a match, and most teams have someone working within a week or two.
It depends on seniority, scope, and engagement length. We quote after a short call.
Yes. We work with teams in the UK, the US, and the Middle East and match engineers to your working hours.
Yes. Engagements run month to month, so you can keep the same engineer for as long as the work needs.
Tell us, and we'll replace them. You don't have to manage a performance process.
You do. IP assignment is written into the contract before work begins.