Custom .NET applications
Software shaped around your workflows, business rules, and integrations, not a generic template with your logo on it. Built in C# with an architecture your team can extend.
.NET Development
.NET Development for Software Built to Last
Some software carries real business workflows and cannot afford to wobble. We build .NET and C# systems with the architecture, security, and discipline that kind of software demands.
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.NET Development
What we build with .NET
From greenfield platforms to careful modernizations, our .NET work centers on backend strength and long-term maintainability.
ASP.NET Core web apps
Portals, dashboards, and customer-facing platforms on ASP.NET Core: fast, secure, and straightforward to operate once they are in production.
Full-stack .NET builds
Frontend, APIs, database, and integrations delivered as one coherent product, so the experience flows cleanly from screen to server without seams between teams.
Legacy .NET modernization
Older .NET Framework applications moved to modern .NET in phases, so the business keeps running while the codebase gets younger underneath it.
Serious workloads need serious engineering
Tell us what your .NET system needs to handle and get a written scope with a clear USD price before anything starts.
Start a ProjectHow it works
How a .NET project runs with us
- 01
Understand the system
We map what you are building, who uses it, and which workflows it must carry before any architecture is drawn.
- 02
Plan the architecture
APIs, data model, integrations, security boundaries, and cloud setup are designed up front so everything connects properly.
- 03
Build in C#
Clean, modular code on ASP.NET Core and Entity Framework, written by senior engineers and peer reviewed before it merges.
- 04
Test like production
APIs, roles, integrations, performance, and edge cases are exercised with automated tests, not just clicked through in a demo.
- 05
Deploy and support
CI/CD, monitoring, and a controlled release, then ongoing fixes and improvements as the system grows in production.
Why AIoptimix
Why teams pick AIoptimix for .NET
Senior C# engineers only
The people on your project have shipped production .NET systems before: APIs, databases, background jobs, and the operational reality behind them.
Enterprise discipline from day one
Security, roles, auditability, and long-term stability are designed in at the start, because retrofitting them later is where budgets go to die.
Integrations done properly
CRMs, ERPs, payment systems, and third-party APIs connected with clean, documented interfaces instead of fragile glue code.
You own everything
Code, accounts, and infrastructure are yours in writing from the first commit, and the scope and USD price are fixed before we start.
Tools and stack
Our .NET stack
Proven tools from the .NET ecosystem, chosen per project rather than by habit.
Frameworks
- ASP.NET Core
- Entity Framework Core
- Blazor
- SignalR
- .NET MAUI
Databases
- SQL Server
- PostgreSQL
- Azure SQL
- Redis
Tooling and cloud
- Azure
- AWS
- Docker
- xUnit
- NUnit
- GitHub Actions
Engagement models
Pick the model that fits.
Staff Augmentation
Vetted engineers who join your team, work your hours, and follow your workflow.
Learn more →Dedicated Teams
A complete unit with delivery management that owns your product end to end.
Learn more →Fixed Price
A written scope, a fixed USD quote, and a committed timeline before we start.
Learn more →FAQ
Frequently asked questions.
What do your .NET development services cover?
Web applications, APIs, enterprise platforms, backend systems, and full-stack builds on the Microsoft .NET platform, from architecture and development through testing, deployment, and long-term support.
Is .NET a good choice for web development?
Yes. ASP.NET Core is fast, cross-platform, and well suited to portals, dashboards, and API-driven products that need strong backend logic, user roles, and integrations. It is a particularly good fit when the software has to stay supportable for many years.
Can you migrate a legacy .NET Framework app to modern .NET?
Yes. We audit the existing application, then migrate in phases: upgrading code, moving to ASP.NET Core, cleaning up data access, and preparing for cloud deployment, all while the live system keeps serving users.
Can .NET work with a React or Angular frontend?
Very well. A common setup we deliver is a .NET backend exposing clean APIs with React, Angular, or Vue on the frontend. That separation suits dashboards, SaaS products, and enterprise platforms.
How is a .NET project priced?
Every engagement gets a fixed written scope with USD pricing before work begins. A focused API costs far less than a full enterprise platform, so we scope first, quote clearly, and hold to it.
Build your .NET system right
Describe the platform you need and we will come back with an architecture recommendation and a clear quote.
Start a Project