I will fix full stack bugs, errors, and issues in your mern or next js application

U
umairarshaddev
U
umairarshaddev
Umair Arshad
fix full stack bugs, errors, and issues in your mern or next js application
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fix full stack bugs, errors, and issues in your mern or next js application

About this gig

Is your website or web app facing bugs, errors, or broken features?

I specialize in full-stack bug fixing across Next.js, React, Node.js, Express, and MERN applications. From UI issues to backend crashes, I'll identify the root cause and deliver clean, production-ready fixes.

Frontend Fixes (React / Next.js)

  • Component rendering issues
  • State management bugs
  • API errors & hydration issues
  • Layout, routing, and form problems

Backend Fixes (Node.js / Express)

  • API endpoint errors
  • Server crashes & middleware issues
  • MongoDB query bugs
  • Authentication/authorization problems

Full-Stack Fixes

  • CORS issues
  • Data flow and integration errors
  • Environment & deployment issues

I provide fast turnarounds, clean code, and reliable solutions that follow best practices.

Before ordering:

Share your tech stack, error message, and steps to reproduce the issue. I'll review and confirm the fix quickly.

Let's get your application working smoothly again!

  • Programming language

    • JavaScript

  • Expertise

    • Algorithms & Data structures
    • Design

  • Frontend framework

    • React.js
    • AngularJS
    • Vue.js
    • Bootstrap
    • Tailwind CSS

  • Backend framework

    • Express.js
    • Node.js

Get to know Umair Arshad

Umair Arshad

Full Stack developer

5.0(1)
  • FromPakistan
  • Member sinceNov 2025
  • Avg. response time3 days
  • Last delivery6 months

  • Languages

    Urdu, English, French
Hey there! I’m Muhammad Umair Arshad, a passionate full-stack developer who loves crafting sleek, fast, and user-friendly websites. With strong skills in React, Next js, Tailwind CSS, and modern JavaScript, I help businesses expand their online presence through visually appealing and functional web design. I’ve worked on projects such as property management dashboards, inventory systems, and responsive business websites, always with a focus on client satisfaction and clean, efficient code.

My Portfolio

Other Software Development Services I Offer

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