I will fix bugs and errors in your react nodejs and nextjs app

M
mshahzaib_dev
M
mshahzaib_dev
M Shahzaib
fix bugs and errors in your react nodejs and nextjs app
Full Screen
fix bugs and errors in your react nodejs and nextjs app
Full Screen
Full Screen
fix bugs and errors in your react nodejs and nextjs appfix bugs and errors in your react nodejs and nextjs appfix bugs and errors in your react nodejs and nextjs app

About this gig

Something is broken, and you need it working today? Send it over.

I debug React, Next.js, Angular, Node, Express, and NestJS applications: frontend crashes, API errors, database queries, broken builds, failing deployments, CORS, authentication, payment webhooks.

HOW I WORK

You send the error and repo access. I reproduce it, find the actual cause, fix it, and tell you in plain language what was wrong so it doesn't come back.

I FIX

Runtime errors and white screens

API and database issues (MongoDB, PostgreSQL)

Authentication and session bugs

Build and compile failures

Broken payment or webhook flows

Performance problems and slow queries

No guessing, no "try reinstalling node_modules." I find the root cause.

Message me first with the error message or a screenshot; I'll tell you within the hour if I can fix it and how long it takes.

  • Platform

    • Custom

  • Website type

    • E-Commerce store
    • Business
    • Landing page
    • Portfolio
    • Saas

  • Programming language

    • JavaScript
    • TypeScript
    • HTML & CSS
    • React
    • Other
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 M Shahzaib

M Shahzaib

Full Stack Engineer Project Manager

5.0(1)
  • FromPakistan
  • Member sinceMay 2026
  • Avg. response time1 hour
  • Last delivery1 week

  • Languages

    Urdu, English
I am an experienced Node.js developer with a passion for crafting efficient and scalable web applications. I am proficient in creating robust back-end systems and APIs, leveraging cutting-edge technologies to deliver seamless user experiences. I am dedicated to continuous learning and collaborating with teams to drive innovative solutions.

My Portfolio

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