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Node.js · QalbIT

Node.js is not the point. The wait is.

We build with Node.js for teams whose users are waiting too long: measured outcomes, written scope, and IP in your accounts.

Nobody asks for Node.js by name. They ask why the API times out under load, or why one slow endpoint drags down every screen that calls it.

Get a written scope →What we build with it

Typical before and afterApp type

Typical before and after
What users feelBefore · what we inheritAfter · Node.js
Time to interactiveHow long before a user can do anything4.2s1.1s74% faster
Page transitionMoving between screens once loaded1.8sInstantNo reload
Form round-tripSubmitting and seeing the result2.4s0.3sOptimistic
Mobile bounce ratePeople who leave before it loads46%19%−27 pts

Medians across Node.js rebuilds we have delivered · measured with real-user data, before and after

48h

To a written scope

Week 1

Working prototype

Async I/O

Built for throughput

100%

Code and IP yours

TypeScript by default. Typed API contracts. Input validated at the boundary. Errors handled, not swallowed. Performance measured, not claimed

What we build with Node.js

Node.js backends for modern web and SaaS products.

We help founders and teams use Node.js where it shines: the API and service layer behind a product, built for throughput and clear contracts with whatever front end sits on top.

  1. REST and GraphQL APIs

    The service layer behind a product: authentication, billing, integrations and the data access other systems depend on.

  2. Multi-tenant SaaS backends

    Tenant isolation, plan gating and usage metering built into the data layer, not bolted on after launch.

  3. Real-time and event-driven services

    WebSockets, queues and webhooks for products where the state has to update without a page reload.

  4. Third-party integrations

    Payment providers, CRMs and internal systems wired together with typed contracts and clear error handling. When an upstream API sends back something malformed, a tool for formatting and validating JSON responses shows the actual shape in seconds instead of a minified string in the console.

  5. Migration from legacy backends

    PHP or Rails services moved to Node.js incrementally, service by service, without a feature freeze.

  6. Performance rescue

    Slow endpoints and blocked event loops profiled and fixed: measured before and after.

The Node.js layer over the stack that carries it
Node.js sits at the surface: the stack behind it matters just as much

How Node.js projects run here

A practical Node.js process, from audit to production.

We keep the Node.js process structured but lightweight, so we can deliver a working build in real time without surprising you on quality, timeline or budget.

  1. Audit & architecture

    We read the existing code or the requirements, then propose service boundaries, data schema and API contract.

    Week 1

  2. Service and schema design

    A clear module boundary and a typed data schema: the decisions that stop a Node.js codebase rotting.

    Week 1–2

  3. Implementation & integration

    Build or refactor endpoints, wire them to the data layer, handle validation, retries and failure states properly.

    Sprint by sprint

  4. Testing, hardening & rollout

    Automated tests on critical paths, accessibility and performance passes, then a staged release.

    Pre-launch

  5. Ongoing support & features

    A standing team continues to ship features and keeps dependencies current, and teams that would rather hold that capacity themselves hire Node.js developers from us on a monthly contract.

    Post-launch

Where Node.js earns its keep

Node.js use cases we most often deliver.

Most of our Node.js work is on the service layer: APIs, integrations and backends, rather than the interface on top of them.

  • API layer for a web or mobile app

    The backend a React, Next.js or mobile client talks to: auth, data access and business logic in one place.

  • Internal tooling and automation

    Scripts, cron jobs and small services that move data between systems without a human doing it by hand.

  • High-throughput integrations

    Webhooks, queues and third-party APIs where a blocking call would stall everything behind it.

  • Legacy backend replacement

    Replacing an ageing PHP or monolithic backend with a modern service, endpoint by endpoint.

The stack around Node.js

The Node.js stack we typically use at QalbIT.

We usually pair Node.js with modern tooling: TypeScript, a typed data layer and tested queues, so the service stays maintainable and predictable as the team changes.

  • Core

    • Node.js LTS
    • Express or Fastify
    • npm workspaces
    • PM2 or systemd in production

  • Data & queues

    • Prisma or Drizzle ORM
    • PostgreSQL or MySQL
    • Redis caching and queues
    • REST & GraphQL

  • Validation & contracts

    • Zod validation
    • OpenAPI / Swagger docs
    • JWT and OAuth2
    • Rate limiting

  • Quality & observability

    • Vitest / Jest
    • Supertest for API testing
    • ESLint & Prettier
    • Sentry

We adapt to what you already run. If your team is on a different framework or ORM, we work inside it rather than rewriting for preference.

Node.js in production

Two products where Node.js is the surface.

Different sectors, same discipline: typed contracts, tested endpoints, and the client owning the code.

Start here

Hire Node.js developers who will still be proud of the code in year three.

Share your current backend, goals and the problems you want to solve. We will review your requirements, look at any existing code and propose a practical Node.js plan that matches your stage and budget.

  • A written scope with the exclusions listed
  • An architecture recommendation for services and data
  • The name of the engineer who would lead it
  • Free, and yours to keep either way

Get your free estimate

Three quick questions: scope, approach and a price range back within 48 hours. No sales call required first.

What do you need built?
When do you want to start?
Where should we send the estimate?

Answer all three questions above, then send.

NDA-friendly · IP yours from day one

FAQs · Node.js

Node.js development: frequently asked questions

Common questions about API design, migrations and team setup, plus what happens after launch.

Ask us directly →
Mostly the API layer behind a product: services handling authentication, billing, integrations and the data access other systems depend on. If the front end is waiting on slow or inconsistent responses from the back end, Node.js is usually the right call.
Both. We start an existing codebase with a short audit that tells you honestly what is salvageable, what should be restructured into services and what each option costs.
Next.js or React on the front end, PostgreSQL or MySQL for storage depending on what your team already runs, and NestJS when the service is big enough to need a defined module structure rather than a single file of routes.
A focused first release is usually six to ten weeks. A full product with integrations, billing and reporting runs ten to sixteen. You see a working API in the first two weeks.
Yes. Most clients keep a small standing team for features, dependency upgrades and performance work, with 30 days notice to stop or scale down.
We design around the actual bottleneck, not a guess: profile first, then decide whether the fix is caching, a queue for background work, or running more instances behind a load balancer. Most services never need all three.
Send us the goal and any existing code. You get a written scope, an architecture recommendation and a price range within 48 hours, free, and yours to keep either way.

Next step

Let’s plan your next Node.js build.

API, integration or backend rescue: send it in two lines and get a written scope, timeline and price range within 48 hours.

Book a Node.js discovery call

Keep exploring