I will fix bugs and errors in your react nextjs or nodejs application

S
sadi_tanvir
S
sadi_tanvir
Tanvir S
fix bugs and errors in your react nextjs or nodejs application
Full Screen
fix bugs and errors in your react nextjs or nodejs application

About this gig

React, Next.js or Node.js app broken? I fix it fast.


I don't just patch errors I find the root cause and fix it properly. 5+ years as a Full Stack Dev with JavaScript, Typescript, React, Next.js, Node.js, Laravel and PHP.


BUGS I FIX:

  • White screen, 500 errors, build failures
  • State management issues (Redux, Context, useState)
  • API failures, database errors, CORS
  • SSR/CSR hydration mismatch (Next.js)
  • Routing, auth, middleware problems
  • Performance & memory leaks


CUSTOMIZATION:

  • UI/UX tweaks (Tailwind, CSS)
  • New features & components
  • Third-party integrations (Stripe, Firebase, Auth0)
  • Code refactoring & optimization


PACKAGES:

  • Quick Fix 1 bug or small tweak ($35)
  • Fix & Enhance 3 bugs + 1-2 features ($90)
  • Full Build & Repair Complex fixes + custom dev ($200)


Why me? Fast diagnosis, clean code, full stack background, urgent fixes available.


Message me BEFORE ordering with your error screenshot and repo access.

  • Programming language

    • JavaScript

  • Expertise

    • Debugging
    • Security
    • Databases
    • Source control
    • Testing procedures

  • Frontend framework

    • jQuery
    • Next.js
    • React.js
    • Tailwind CSS
    • Vue.js

  • Backend framework

    • Express.js
    • NestJS
    • Next.js
    • Node.js
    • Firebase

Get to know Tanvir S

Tanvir S

Senior Software Developer

5.0(3)
  • FromBangladesh
  • Member sinceDec 2022
  • Avg. response time1 hour
  • Last delivery2 weeks

  • Languages

    Bengali, English, Hindi, Urdu
Hi, I'm Tanvir Hossain Sadi — Senior Full Stack Developer & Team Leader @ Bangladesh Software Development Ltd. I specialize in MERN, PHP, Laravel, MySQL, and AI-driven development (Agentic AI, RAG, automation). I also handle complete DevOps & CI/CD: Docker, GitHub Actions, Nginx, AWS/VPS, Linux, PM2. I build smart, scalable, production-ready solutions from code to cloud. Let's bring your next project to life — message me before ordering!

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