I will fix bugs or add features to your react application

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Serhii L.

About this gig

Is your React or Next.js app full of bugs, unfinished features, or AI-generated code that works... but not quite the way it should?

I'm a Software Engineer with 8+ years of experience building and maintaining web applications. I can help fix, improve, and extend your existing app without rebuilding everything from scratch.


What I can help with:

  • Fix React / Next.js bugs and unexpected behavior
  • Add new features to your existing app
  • Refactor and clean up problematic code
  • Turn AI-generated code into production-ready software
  • Improve performance and fix inefficient code
  • Integrate APIs, third-party services, and AI features
  • Handle full-stack tasks when a frontend-only solution isn't enough


Why work with me?

I focus on understanding your existing codebase and delivering reliable, maintainable solutions without unnecessary changes.

I don't limit the work to the frontend. If your issue requires changes to the backend, API, database, authentication, or architecture, I can handle the complete solution.


Have a specific problem? Message me before ordering and I'll review what needs to be done.

Get to know Serhii L.

Serhii L.

Software Engineer specializing in Web and Mobile

  • FromUkraine
  • Member sinceApr 2026
  • Avg. response time1 hour
  • Languages

    Ukrainian, English
Software Engineer specializing in web and mobile development, with 8+ years of experience building reliable software and solving real product problems. I value clean code, thoughtful architecture, scalability, and long-term maintainability. Experienced with different technologies and approaches to find the right solution for each business problem, making the most of AI where it adds value while keeping things simple and reliable. I can help build web and mobile products, improve existing applications, develop APIs and backend services, solve technical issues, and provide technical guidance.

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