phoenix
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Develop or fix features in your .NET and C# application

$250
Quantity
1
Delivery in
7 days
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What you get with this Offer

Need something built, fixed or improved in your .NET application? I'll write clean, reliable C# code that fits your existing project, whether that's a new feature, a stubborn bug or an API your business depends on.

What I can work on:
- New features in ASP.NET Core / ASP.NET MVC web apps
- REST APIs: building new endpoints or fixing existing ones
- Bug fixes, crashes, errors and performance problems
- Database work with Entity Framework, SQL Server, PostgreSQL or MySQL
- Integrations with third-party APIs (payments, CRM, email, Microsoft 365, etc.)
- Windows Forms / WPF desktop app features and fixes
- Background jobs, scheduled tasks and Windows services
- Upgrading older .NET Framework projects to modern .NET

You'll receive:
- Up to 8 hours of focused development on your agreed task
- Clean, well-structured C# following your project's existing style
- Testing of every change, with unit tests where your project uses them
- Code delivered through your Git repository (pull request or commit), or as a zip
- A short note explaining what was changed and why
- 2 rounds of revisions on the delivered work

Not sure how big your task is? Message me before ordering and I'll review it and confirm the scope.

Get more with Offer Add-ons

  • I can add 4 extra hours of development

    Additional 2 working days

    +$107
  • I can write unit and integration tests for the new code

    Additional 1 working day

    +$67
  • I can create Swagger/OpenAPI documentation for your API

    Additional 1 working day

    +$54
  • I can deploy your app to Azure, IIS or a Linux server

    Additional 1 working day

    +$81
  • I can upgrade your project from .NET Framework to .NET 8 or later (small projects)

    Additional 4 working days

    +$201
  • I can deliver all work in 4 working days
    +$81

What the Freelancer needs to start the work

1. A clear description of the feature, bug or task (screenshots, error messages and steps to reproduce help a lot)
2. Access to your source code (GitHub, GitLab, Azure DevOps or a zip)
3. Your .NET version and project type (ASP.NET Core, MVC, Web API, WPF, etc.)
4. A test or development database, or its structure and sample data
5. Any API keys or test accounts needed (sandbox/test versions only, please)
6. How you'd like the code delivered (pull request, commit or zip)