Node.js Development
APIs, real-time features and back-end services built in Node.js and TypeScript
Node.js where it pulls its weight
Whoooop Ltd builds back ends in Node.js. It's at its best when a server spends most of its time waiting — on a database, on another company's API, on a few hundred requests arriving at once — rather than grinding through heavy calculation. That covers a lot of what a business website or web app actually does: take a form, check a record, call a payment provider, send the reply. We've worked across the full stack for more than 15 years, so the Node we write is built around the database it reads from and the traffic it has to survive, not bolted together from whatever tutorial came up first.
What we build with Node.js
APIs and back-end services
The server behind a site or app — handling requests, talking to the database, enforcing the rules about who can do what. Usually REST, GraphQL where it genuinely helps. Where the job is mostly wiring your systems to each other, our API development and integration page goes into that side.
Real-time features
Live updates that arrive without the user reloading — a notification, a status that changes as an order moves, a dashboard that ticks over on its own. Node handles a lot of open connections at once without falling over, which is exactly what this needs.
Background and scheduled jobs
The work that shouldn't hold up a page: sending the confirmation email, generating the report, syncing overnight to another system. We move it onto a queue or a schedule so the visitor gets an instant response and the slow part happens out of sight.
One language across the stack
Node lets the back end share a language — and often types — with a JavaScript front end. Pair it with our React front-ends and one developer can work both ends without switching mental gears halfway through a feature.
The layer between your tools
A small service that sits in the middle — taking a webhook from one system, reshaping it, passing it to another, and keeping a record of what happened. Often the quiet bit of plumbing that makes a set of separate tools behave like one.
Inheriting an existing Node codebase
Picked up a Node app and lost whoever wrote it? We read our way in, patch what's broken, update the packages that have gone stale or insecure, and keep it running rather than throwing it out and starting over.
When Node is the right call — and when it isn't
Node is fast for input and output and slow for heavy number-crunching, because it works through one main thread. For the everyday web work above that's a non-issue. But hand it something genuinely compute-bound — large-scale data processing, certain machine-learning workloads — and a different runtime is the honest answer; Python is often where we'd take that, and we'll say so rather than force the wrong tool. If the back end mainly has to cope with traffic that spikes and falls away, our serverless development page covers running Node on demand so you pay for what you use instead of a server that idles.
Node.js and TypeScript
We write Node in TypeScript as a matter of course. A typed back end catches the mismatched field or the forgotten case before it reaches production, and it makes a service far easier to change a year on, when whoever's editing it no longer remembers what every function expected. It also keeps the two ends honest with each other: when the front end and the API agree on the same types, a change on one side shows up as an error on the other instead of a bug a customer finds first.
Keeping a Node service healthy
Node's strength — its enormous package ecosystem — is also where it rots if left alone. Dependencies go out of date, pick up security advisories, and quietly drift behind. We keep them current, drop the ones a project no longer earns, and watch what they drag in. The database usually decides whether a Node back end feels quick or sluggish, so that work goes hand in hand with our database design and development. And where Node is one part of a larger build, our web application development page sets out how we approach the whole thing, front end included.
Got a back end in mind?
Tell us what the server needs to do and we'll talk through whether Node.js is the right fit and how we'd build it.
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