Node.js development
Backend services that handle many simultaneous connections efficiently, sharing a language with the front end.
JavaScript runtime
Chosen per project
Maintainable handover
Node.js suits work that is dominated by waiting — for a database, an external API, another service. Its event-driven model handles thousands of concurrent connections on modest hardware, which is exactly the shape of most web APIs and real-time features.
It is a poor fit for sustained heavy computation, where a single busy request can block everything else unless the work is deliberately moved off the main thread.
What we build with Node.js
REST and GraphQL APIs serving web and mobile clients
Real-time features — chat, live tracking, notifications
Integration services that orchestrate several third-party APIs
Server-rendered JavaScript applications
Where it fits — and where it does not
Good fit when
Many concurrent connections doing little work each
Real-time communication over WebSockets
One language shared between front end and back end
Rapid iteration on API surfaces
Consider something else when
Sustained CPU-heavy processing such as large report generation
Workloads better served by a strongly typed compiled runtime
Teams with deep existing expertise in another backend language
How a request travels through a Node service
The layers a request passes through. Validation sits early so bad input never reaches the database, and the service layer stays free of HTTP concerns.
Client
Browser, mobile app or partner system.
HTTP layer
Routing, parsing and schema validation.
Node service
Business logic, free of HTTP details.
External services
Payments, messaging, storage, queues.
Database
Pooled connections and transactions.
How we work with Node.js
Project structure
Routes, services and data access kept separate so business logic is testable without HTTP.
Validation
Every inbound payload validated against a schema at the boundary, never trusted downstream.
Async discipline
Consistent promise handling with proper error propagation, and heavy work moved to queues.
Observability
Structured logging with request correlation, so a single call can be traced end to end.
Our typical Node.js setup
| Concern | What we use |
|---|---|
| Framework | Express or Fastify, chosen for throughput and middleware needs |
| Validation | Schema validation at every external boundary |
| Database access | Prisma, Knex or the native driver depending on the data model |
| Background work | Queue-based workers for jobs that must not block a request |
| Testing | Unit tests on services, integration tests against a real database |
| Runtime | Active LTS releases only, containerised for deployment |
Frequently asked questions
For I/O-bound work — which is most web APIs — yes, and it handles concurrency very efficiently. For sustained computation it is the wrong tool, and we would recommend something else for that part of the system.
Node.js if the team already writes JavaScript and the workload is I/O-bound. Python if the work involves data processing, machine learning or scientific libraries. Both are excellent; the deciding factor is usually the surrounding work.
With a queue and separate worker processes, so report generation or bulk imports never block the API handling live traffic.
Topics people search for
Services built with Node.js
API Development
The interfaces that let your systems talk to each other, and let partners build on top of what you have.
Web Application Development
Applications that run in the browser, handle real workloads and hold up when several departments depend on them at once.
SaaS Development
Building a software product means building a business system around it too — tenancy, billing, onboarding and support tooling.
Cloud Solutions
Hosting designed around what your application actually needs, with the monitoring and backups that make it safe to rely on.
Tell us what you are trying to build
Describe the problem in plain language and we will tell you what it would take to solve it — the approach, the moving parts and the sensible order to build them in. No obligation either way.