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USD
I will fix bugs in your react, dotnet c sharp or nodejs application
Romain M
About this gig
Is your app crashing, throwing errors or behaving strangely? I will find the root cause and fix it properly, not just patch the symptom.
I am a full-stack developer specialized in C# / .NET and React, with solid experience in Node.js, TypeScript, SQL and mobile apps.
What I can fix:
- React / Next.js bugs (state, rendering, API calls, build errors)
- C# / .NET / ASP.NET Core exceptions and API errors
- Node.js / Express servers and integrations
- Database issues (SQL Server, PostgreSQL, MySQL, MongoDB)
- Performance problems, memory leaks, deployment errors
How it works:
- Send me the issue, error logs or screenshots
- I analyze the code and confirm the scope
- I fix, test and deliver with a clear explanation
Why work with me:
- Clean code that follows your existing style
- Clear communication in English and French
- Git-friendly delivery (branch or pull request)
Not sure which package fits? Message me before ordering and I will check your issue for free.
Note: I do not work on PHP or WordPress projects.
Get to know Romain M
Romain M
FullStack Developer CSharp DotNET Blazor React SQL
- FromFrance
- Member sinceJun 2025
Languages
French, English
Full-stack developer with 4+ years of experience building and maintaining internal business applications for a major French bank (Crédit Agricole), using C#/.NET (MVC, Blazor), React and SQL Server. I build custom web apps, internal tools, dashboards and showcase websites with admin areas, automated emails and newsletters. I also handle hosting, Docker deployment, ongoing maintenance, logging and monitoring. Clean code, clear communication, deadlines respected. Message me before ordering so we can agree on scope.
Other Software Development Services I Offer
FAQ
What do you need to start?
Access to the code (Git repository invite or zip file), a description of the bug, steps to reproduce it, and any error logs or screenshots.
Do you work on PHP or WordPress sites?
No. I focus on C# / .NET, React, Node.js / TypeScript and mobile apps, so you get a specialist for these technologies.
What if the bug is bigger than expected?
I always review the issue first. If the fix needs more work than your package covers, I explain why and send you a custom offer before doing anything extra.
How will I receive the fix?
As a pull request or branch on your Git repository, or as updated files, with a short note explaining the cause and the changes.
