I will fix bugs in your react nextjs or javascript web application

M
mrfitchers
M
mrfitchers
Serhii

About this gig

Having bugs or unexpected behavior in your React, Nextjs, or JavaScript web application?


I can help you investigate the issue, find the root cause, and implement a clean and reliable fix in your existing codebase.


I can help with:


React and Nextjs bugs

JavaScript and TypeScript issues

Broken UI or unexpected frontend behavior

API integration problems

Forms and validation issues

Responsive and mobile layout bugs

State management and rendering problems

Errors, crashes, and console warnings

Existing features that are not working correctly

Small improvements and fixes in existing applications


I have commercial experience working with production web applications and existing codebases. I am comfortable reading code written by other developers, debugging unfamiliar projects, and making focused changes without unnecessarily rebuilding the application.


I prefer clear, efficient, text-based communication and can work independently once the task is understood.


Please message me before ordering if you are unsure which package fits your issue. Send a short description of the problem, screenshots or error messages if available, and information about your tech stack.

Get to know Serhii

Serhii

Full Stack Web Developer

  • FromUkraine
  • Member sinceSep 2026
  • Languages

    English
Professional web developer with commercial experience building, maintaining, and improving real production applications. I can help with bug fixes, new features, API integrations, responsive layouts, forms, dashboards, and existing codebases. I work independently, communicate clearly, and prefer efficient text-based collaboration. My focus is clean, maintainable code and practical solutions that solve the task without unnecessary complexity.

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