HHamza Siddique
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Service

Backend & API Engineering

REST and GraphQL services with clean data models and predictable behaviour.

All services

I design and build backend services with Node.js, Express, Nest.js and FastAPI, backed by PostgreSQL or MongoDB. The focus is a clear domain model, well-documented endpoints, and the tests and guardrails that keep them reliable as they grow.

What's included

  • REST / GraphQL API design
  • Database schema and migrations
  • Auth, rate limiting and validation
  • Background jobs and webhooks
  • API documentation
Let's work together

Ready to build your next digital product?

Have an idea or a project in mind? I'm open to collaborations, product builds and long-term partnerships — let's turn your vision into something that ships.