I will fix node js express and javascript backend bugs

A
argrabby
A
argrabby
RABBY
fix node js express and javascript backend bugs
Full Screen
fix node js express and javascript backend bugs
Full Screen
Full Screen
fix node js express and javascript backend bugsfix node js express and javascript backend bugsfix node js express and javascript backend bugs

About this gig

Are you struggling with a crashing Node.js backend, memory leaks, or slow API response times? I am a professional backend developer with 3+ years of experience specializing in the Node.js and Express.js ecosystem. I help businesses restore their applications to peak performance with clean, scalable code.

What I can do for you:

  • Core Debugging: Fix Async/Await, Promise-based bugs, and Middleware errors.

  • Auth & Security: Resolve JWT, OAuth, and custom Authorization/Session issues.
  • Database Optimization: Fix slow MongoDB/PostgreSQL queries and schema errors.

  • Migration: Full ESM to CommonJS (or vice versa) migration.

  • Integrations: Fix Stripe, Twilio, and third-party API webhook issues.
  • Performance: Identify and resolve memory leaks and event loop blocks.

Why hire me?

  • Professional documentation for every fix.
  • Clean, industry-standard code.
  • Fast response and 24/7 support.

Please message me with your error logs or code snippet before placing an order to ensure the best results!

  • Expertise

    • Debugging
    • Performance
    • Security
    • Design
    • Databases

  • Frontend framework

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

  • Backend framework

    • Laravel
    • Express.js
    • Node.js

Get to know RABBY

RABBY

Full Stack Developer, Backend Specialist

  • FromBangladesh
  • Member sinceJan 2026

  • Languages

    English
I am a Full-Stack Developer with a primary focus on Backend Development. I specialize in building the core logic, databases, and APIs that power modern web applications. While I am highly proficient in creating responsive front-end interfaces, my true passion lies in architecting secure, scalable server-side systems. From database schema design to seamless API integration, I ensure that the 'brain' of your application is fast, reliable, and secure. I bridge the gap between complex data and a smooth user experience, providing clean and maintainable code for every project.

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