BitPixel

NestJS development for backends with structure built in

NestJS is a TypeScript framework for Node.js that brings clear architecture to backend code. We use it when an API is going to grow — more features, more developers, more services.

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About NestJS

Structure before you need it

A small Node.js service can be a single file. A backend that several developers work on for years cannot. NestJS gives every piece of code an obvious home — modules, controllers, services — and wires them together with dependency injection, so the codebase stays navigable as it grows.

That structure also makes code easy to test and easy to split: a module that starts inside one application can later become its own service without a rewrite. For a short-lived or very small API it is more than you need, and we will use Express instead.

Why NestJS

What NestJS gives your product

  • Opinionated architecture

    Consistent structure across the codebase, so new developers find their way quickly.

  • TypeScript throughout

    Typed requests, responses and data models, with validation at the edges.

  • Testable by design

    Dependency injection makes units easy to isolate and mock.

  • Ready for microservices

    Built-in support for message queues, gRPC and event-driven services.

What we build

What we build with NestJS

  • Modular monoliths

    One deployable application with clean internal boundaries — the right starting point for most products.

  • Microservices

    Independently deployed services communicating over queues or gRPC.

  • GraphQL and REST APIs

    Typed, documented APIs for web and mobile clients.

  • Backends for SaaS

    Multi-tenant data, role-based access, billing and background processing.

Services

Services we deliver with NestJS

All services

Insights

Reading on NestJS

FAQ

Questions about NestJS development

Something we have not covered? Ask us directly.

When is NestJS the right choice?

When the backend will be worked on by more than a couple of developers, will live for years, or may need to be split into services later. For a small API or a prototype, Express is lighter and faster to start.

Should we start with microservices?

Usually not. A well-structured monolith is simpler to build, deploy and debug, and NestJS modules make it straightforward to extract services later if scale or team size demands it.

Can you migrate our Express app to NestJS?

Yes. NestJS runs on Express under the hood, so a migration can be done route by route rather than as a rewrite.

Have a NestJS project in mind?

Tell us what you're building and we'll come back with a scope, a timeline and a fixed price.