I will fix react nextjs and fastapi bugs

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Sahan Randika
fix react nextjs and fastapi bugs
Full Screen
fix react nextjs and fastapi bugs
Full Screen
Full Screen
fix react nextjs and fastapi bugsfix react nextjs and fastapi bugsfix react nextjs and fastapi bugs

About this gig

Are you facing bugs, errors, or unexpected behavior in your React, Next.js, Python, or FastAPI application?


I will investigate the issue, identify the root cause, and provide a clean and reliable fix without making unnecessary changes to your existing project.


I can help with:

  • React and Next.js bugs
  • JavaScript and TypeScript errors
  • FastAPI and Python backend issues
  • REST API errors
  • API integration problems
  • HTTP 400, 401, 403, 404, 422 and 500 errors
  • PostgreSQL and SQLAlchemy issues
  • Authentication and JWT problems
  • CORS errors
  • Environment variable issues
  • Build and deployment errors
  • Responsive UI and component issues
  • Next.js routing and rendering problems
  • Performance and loading issues


You will receive:

  • Clean and maintainable code
  • Root-cause debugging
  • Tested bug fixes
  • Clear communication
  • Explanation of the issue and solution


Please message me before ordering if the issue is complex or you are unsure which package to select.

  • Programming language

    • JavaScript

  • Expertise

    • Algorithms & Data structures
    • Localization
    • Performance
    • Security
    • Design

  • Frontend framework

    • Angular
    • AngularJS
    • Next.js
    • React.js
    • Vue.js

  • Backend framework

    • FastAPI
    • Next.js
    • Node.js
    • Supabase
    • Firebase

Get to know Sahan Randika

Sahan Randika

Full Stack Developer React NodeJs Python

5.0(2)
  • FromSri Lanka
  • Member sinceSep 2020
  • Last delivery3 years

  • Languages

    English, Sinhala
Hi, I'm Sahan — a Full-Stack Developer with 3+ years of experience building scalable web and mobile apps. I work across the full stack using React, Next.js, React Native, Node.js, Python, Flask & FastAPI, with real-time features (Socket.io), secure JWT auth, and cloud deployment (Google Cloud, Azure, CI/CD). I've built student management systems, tenant platforms, SaaS tools, and real-time messaging servers. ✔ Clean, maintainable code ✔ Fast communication ✔ On-time delivery Need to build, fix, or scale something? Message me and let's get started.

My Portfolio

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