I will fix react javascript frontend bugs and UI issues

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Joao Laurenti

About this gig

Need help fixing a focused React or JavaScript frontend bug?

I can investigate and fix clearly scoped issues such as:

React state problems

Form and input validation bugs

Event and UI logic issues

Rendering problems

Responsive issues inside React components

Other reproducible frontend JavaScript bugs

My process is structured: I reproduce the issue when possible, identify the cause, apply a focused fix, and verify the result.

This Gig is designed for small, well-defined frontend bugs in existing React or JavaScript projects.

Not included: full application development, backend work, database changes, authentication systems, payment integrations, complex APIs, DevOps, migrations, or security-critical work.

If you are unsure whether your issue fits this Gig, send a short description and screenshots before ordering.

Get to know Joao Laurenti

Joao Laurenti

Frontend Developer for Bug Fixing and Responsive Design

  • FromBrazil
  • Member sinceSep 2026
  • Languages

    Portuguese, English
I help solve focused website and frontend issues with clear, testable solutions. I work on responsive and mobile layout problems, HTML/CSS fixes, JavaScript bugs, and well-scoped React issues. I also build CSV, JSON, and file-processing automations for clearly defined workflows. My approach is practical: understand the issue, reproduce it when possible, implement a focused solution, and verify the result. My portfolio includes personal demonstration projects in frontend fixes, React bug fixing, and file processing.

My Portfolio