Mohammad Jahangir
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Backend Development

Backend systems built in Node.js — NestJS for structured, modular platforms, Express for lighter services — with the database and background job design to match.

Node.jsNestJSExpressPostgreSQLMongoDBRedis

What you get

  • A REST or GraphQL API built in NestJS or Express
  • Database schema design in PostgreSQL or MongoDB, matched to the actual data shape
  • Background job processing (Redis, BullMQ, cron) for anything that shouldn't block a request
  • Authentication and authorization (JWT, OAuth, role-based access)

Who it's for

  • Products that need a backend rebuilt for scale
  • Teams that need an API designed to serve multiple clients (mobile, web, third-party)
  • Businesses that need secure auth and role-based access done correctly

How I work

  • Pick NestJS or Express based on how much structure the project actually needs, not by default
  • Design the data model before the endpoints — endpoints follow from the schema
  • Move anything slow (OCR, verification, notifications) into a background queue

Proof of work