Node.js Development UK: APIs, Real-Time Apps and Integration Services

Where Node.js fits

Node.js is good at handling lots of things happening at once: many API calls, many open connections, many small events. That makes it a natural choice for:

• Integration services that receive webhooks, call several APIs and keep systems in step.
• Real-time features such as live dashboards, notifications, tracking and chat over WebSockets.
• APIs serving a web front end, a mobile app and partners from one place.
• Platform apps, such as Shopify apps, where the platform's own tooling is JavaScript-first.
• Server-side rendering for React applications built with Next.js.

For data-heavy business applications with lots of forms and admin screens, we often prefer Laravel. Many projects use both: Laravel for the core system, Node.js for a real-time or integration layer. We choose on the merits, not habit.

TypeScript and the stack we use

We write Node.js in TypeScript. Types catch whole categories of bugs before code runs, make large codebases easier to navigate and act as living documentation for the next developer. Around that:

• Fastify or Express for lean HTTP services, NestJS where a larger application benefits from its structure.
• Prisma or Drizzle for typed database access to PostgreSQL or MySQL.
• BullMQ on Redis for background jobs with retries, backoff and rate limiting.
• Zod or similar for validating every external input, from webhook payloads to form data.
• Vitest or Jest for tests, and OpenTelemetry or structured logging for visibility in production.
• Docker images for consistent deployment to a VPS, container platform or serverless functions.

Node.js versions and support

Node.js has a published release schedule. Even-numbered versions become Long Term Support (LTS) releases. According to the Node.js release schedule:

The project has also announced that, starting with Node.js 27, it will move to one major release a year, with every release becoming LTS. We build new work on an LTS line, pin versions in Docker images and CI, and plan an upgrade path before end of life rather than after.

Integration services that do not lose data

Integration code is where Node.js earns its keep, and where shortcuts hurt most. Our integration services follow a few rules:

• Acknowledge fast, process later. Webhooks are verified (for example Stripe's signature header or Shopify's HMAC), stored and acknowledged immediately, then processed from a queue.
• Idempotency everywhere. Event IDs are recorded so the same event processed twice has no extra effect.
• Respect rate limits. Calls to Xero, HubSpot, Shopify and others are throttled to each API's published limits, with backoff on 429 responses.
• OAuth tokens handled properly. Refresh tokens stored encrypted and rotated automatically.
• Dead-letter queues and alerts for anything that keeps failing, with a screen your team can use to retry.

See webhook development and systems integration.

Running Node.js in production

A Node.js service that works on a laptop is not the same as one that runs reliably for years. Before anything goes live we make sure that:

• Configuration and secrets come from environment variables or a secrets manager, never from code in the repository.
• The process is supervised and restarts automatically, with health checks so a load balancer or orchestrator knows when it is unwell.
• Logs are structured JSON with request IDs, so a single customer problem can be traced across services.
• Dependencies are audited and updated on a schedule, because the npm ecosystem moves quickly and old packages collect known vulnerabilities.
• CPU-heavy work, such as PDF generation or image processing, runs in worker threads or a separate queue worker so it never blocks the event loop.

If you would like the service hosted and watched for you, our sister company dijitul DNS provides hosting.

Starting a Node.js project

New service, upgrade from an end-of-life Node.js version, or rescue of a JavaScript codebase that has grown out of control, we start with a free chat. For existing code we review it first and give you a plain-English view. You then get a fixed-price quote for the agreed scope, phased for larger builds. Get in touch.

What we deliver

• REST and GraphQL APIs in Node.js and TypeScript
• Webhook receivers and integration workers with queues and retries
• Real-time features with WebSockets: live dashboards, notifications, chat
• Shopify apps and other platform apps
• Back ends and server-side rendering for React and Next.js front ends
• Upgrades from old Node.js versions and JavaScript to TypeScript conversion

How it works and what it costs

Every project gets a fixed-price quote after a free initial chat and a short scoping stage. You own the code and the data.

1. Free chat

   Tell us the problem in plain English: what you do now, what goes wrong and what "better" looks like. No charge, no obligation.

2. Scoping

   We map the processes, systems and data involved, agree what is in and out, and write it down so there are no surprises.

3. Fixed-price quote

   You get a fixed price for the agreed scope, or a phased plan for bigger builds, so you can start small and prove it works.

4. Build and test

   We build in short stages you can see and try, test against real data, then go live carefully with a rollback plan.

5. Hand over and look after

   You own the code and the data. We can host it, support it and keep improving it, or hand it to your own team.

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