I will fix bugs and optimize your nodejs or express backend

H
hadeed_malik
H
hadeed_malik
Hadeed
fix bugs and optimize your nodejs or express backend
Full Screen
fix bugs and optimize your nodejs or express backend
Full Screen
Full Screen
fix bugs and optimize your nodejs or express backendfix bugs and optimize your nodejs or express backendfix bugs and optimize your nodejs or express backend

About this gig

Backend acting up? Silent failures, slow queries,broken auth, or a mess of unmaintainable code someone else left behind - I'll dig in and fix it. I work across Node.js, Express, and Nestjs, and I'm comfortable jumping into existing codebases without needing weeks to get oriented. If something's broken, I find out way before I touch anything - no random changes hoping something sticks.

What You Get:

  • Debugging of silent failures, unhandled errors, and edge-case bugs
  • performance optimization (slow endpoints, inefficient database queries)
  • Auth flow fixes(JWT, sessions, Oauth2)
  • Code review and refactoring for maintainability
  • A clear written explaination of what was wrong and what I changed

Recent Work:

I diagonsed and fixed a production bug where a client's API was returning all zeros due to a missing query flag - a one line fix that required real investigtion to trace. I've also resolved Oauth callback bugs and silent proposal-submission in a live SaaS product under active use.

Why Work With Me:

Send me your error logs, repo, or a description of what's going wrong, and I'll give you an honest read on the issue before you commit to anything. No black-box fixes.

  • Platform

    • Custom

  • Programming language

    • JavaScript
    • TypeScript
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 Hadeed

Hadeed

MERN developer delivering modern UIs full stack apps and secure APIs

  • FromPakistan
  • Member sinceJul 2024
  • Avg. response time1 hour

  • Languages

    English
Full-Stack Web Developer with hands-on experience building scalable and maintainable web applications using the MERN stack and PHP. Skilled in developing responsive React-based user interfaces, designing robust backend systems, and integrating RESTful APIs. Strong understanding of database design, authentication, and performance optimization, with a practical focus on clean code and real-world problem solving.

My Portfolio

Related tags