I will fix website bugs, API issues and mern stack errors

Z
zainejaz003
Z
zainejaz003
Zain Ejaz
fix website bugs, API issues and mern stack errors
Full Screen
fix website bugs, API issues and mern stack errors
Full Screen
fix website bugs, API issues and mern stack errorsfix website bugs, API issues and mern stack errors

About this gig

I am a Professional Full Stack Developer specializing in debugging, troubleshooting, and fixing issues in web applications built with React, Node.js, Express, and MongoDB.

If your website or web application is not working properly, has errors, broken features, performance issues, or backend problems, I can quickly identify the root cause and fix it efficiently.

I work with frontend, backend, and full stack applications to ensure smooth functionality, clean code, and optimal performance. My goal is to resolve issues without affecting existing features and improve overall stability of your application.

Types of bugs I can fix:

  • React.js frontend errors and UI issues
  • Node.js / Express backend issues
  • API errors and integration problems
  • Database (MongoDB) connection and query issues
  • Authentication and login problems (JWT, sessions)
  • Website performance and loading issues
  • JavaScript errors and console issues
  • Deployment and hosting issues
  • Full stack application debugging

Why choose my service:

  • Fast and accurate bug detection
  • Clean and safe fixes without breaking existing code
  • Strong experience in MERN stack development
  • Clear communication and timely delivery
  • Focus on long-term solutions

  • Platform

    • Custom

  • Website type

    • E-Commerce store
    • Business
    • Landing page
    • Education
    • Entertainment

  • Programming language

    • Java
    • JavaScript
    • PHP
    • Python
    • TypeScript
    • HTML & CSS
    • Bootstrap
    • jQuery
    • React
    • Laravel
Respect third-party rights

Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.

Get to know Zain Ejaz

Zain Ejaz

Software Engineer

  • FromPakistan
  • Member sinceAug 2021
  • Avg. response time3 hours

  • Languages

    Urdu, English, Punjabi, German
I’m a Full Stack MERN & React Native Developer with 4+ years of experience building scalable web & mobile apps. I specialize in React, Next.js, Node.js, Express & MongoDB, creating fast, secure, and real-time applications. I’ve built chat systems, SaaS dashboards, APIs, and mobile apps. I focus on clean code, scalable architecture, and real-world performance. I can build your product from scratch or improve existing systems with reliable, production-ready solutions.

My Portfolio

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