I will build a scalable nestjs nodejs backend API with mongodb

I
iam_moshin
I
iam_moshin
Mohsin J
build a scalable nestjs nodejs backend API with mongodb
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build a scalable nestjs nodejs backend API with mongodb

About this gig

I design and build backend systems the way I build my own production app - for real usage, not just a demo. My background is running the backend for a live multi-service marketplace (ride-hailing, delivery, rentals) built on NestJS + MongoDB, with Redis-backed queues (Bull/BullMQ) and integrations across Stripe, Twilio, AWS, and Firebase.


What I can help with:

REST API design and implementation in NestJS/Node.js

MongoDB schema design (Mongoose) for real-world, scaling data models

Authentication and role-based access control

Background job processing with Bull/BullMQ and Redis

Third-party integrations: Stripe, Twilio, AWS SDK, Firebase

Dependency upgrades, migrations, and debugging production issues


I favor precise, surgical fixes over risky rewrites, and I always leave you with documentation of what was built and why.


Let's talk about your project before you order if it doesn't fit neatly into a package - happy to scope a custom quote.

  • Expertise

    • Debugging
    • Performance
    • Security
    • Databases

  • Programming language

    • JavaScript

  • Backend framework

    • Express.js
    • NestJS
    • Node.js

Get to know Mohsin J

Mohsin J

Backend Flutter and AI Voice Developer

  • FromPakistan
  • Member sinceSep 2026
  • Avg. response time1 hour

  • Languages

    Urdu, English
I'm a hands-on full-stack developer who has spent the last few years building and scaling a live multi-service marketplace app (ride-hailing, food delivery, courier, and rentals) from the backend up. I work across NestJS/Node.js APIs, MongoDB, Flutter mobile apps, and AI-powered features like multilingual voice ordering. I care about clean, maintainable code and I'm just as comfortable debugging a tricky production bug as I am architecting a new service from scratch. If you need someone who can own a feature end-to-end, API to mobile UI, that's what I do daily.

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