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I will build or fix your c sharp windows desktop app in winforms or wpf
Jake Y
About this gig
Got a WinForms or WPF app that's crashing, slow or missing a feature? Or need a new Windows tool built? I'll fix, update or build it in C#.
I'm a senior software developer with 8+ years of commercial C#/.NET experience, including Windows desktop tools used in real businesses.
What I can do:
- Fix bugs and crashes in existing WinForms or WPF apps
- Add new features, screens or reports
- Improve slow or freezing interfaces
- Connect your app to SQL Server, SQLite or an API
- Build a new desktop app, with a Windows installer
What I need from you:
- Your full source code (Visual Studio solution)
- A description of the bug or feature, with screenshots or steps to reproduce
- Access to any database or test data the app needs
Please note:
- I need your source code, as I can't work from a compiled .exe
- Bigger bugs may need a custom quote, so message me first if you're unsure
- I'll keep your existing code style and won't rewrite anything unless you ask
Message me before ordering and I'll tell you which package fits.
Get to know Jake Y
Jake Y
I build and fix APIs, desktop apps and Python tool
- FromUnited Kingdom
- Member sinceJan 2018
- Last delivery5 years
Languages
English
Hi. I'm a Senior Software Developer with 8+ years of commercial experience in C#/.NET & Python.
I build clean, reliable, production-ready software across healthcare, finance, energy & manufacturing, including high-compliance systems for the NHS.
💻 C#/.NET & Python expertise
🔗 APIs, backend systems & integrations
🛡️ Security, reliability & compliance focused
🧪 Clean, tested, maintainable code
💬 Fast communication & regular updates
I care about the details and deliver code you can rely on and fully own.
Not sure what you need? Message before ordering and let's find the right solution.
Other Software Development Services I Offer
FAQ
Which .NET versions do you work with?
.NET Framework 4.x and modern .NET (6, 8 and later).
Can you upgrade my app from .NET Framework to modern .NET?
Yes. Message me with your project details and I'll send a custom quote, since the work depends on the app's size.
What if I only have the .exe and no source code?
Unfortunately I can't help without the source code.
Can you make my old app look more modern?
Yes. I can refresh the layout, styling and icons without changing how the app works.
What if the bug turns out to be bigger than expected
I'll tell you before doing any extra work, and you can choose whether to continue with a custom offer.
Will you keep my code private?
Yes. Your code is only used for your order, and I'm happy to sign an NDA.
