React Development
Single-page apps, dashboards and interactive front-ends built in React and TypeScript
React that earns its keep
Whoooop Ltd builds front-ends in React. React shines when a screen has to react to the user — filtering a long list as they type, updating a chart without a full page reload, keeping a multi-step form in step with itself. Reach for it on a plain brochure site and you've added a build step and a JavaScript bundle for nothing; reach for it on something genuinely interactive and it earns its place. We've spent more than 15 years in full-stack development, so the React we write is shaped by the back end it talks to and the load it has to take, not by whatever was trending the week it was started.
What we build with React
Single-page applications
The whole front-end as one React app — client-side routing, state that holds together as the user moves around, and views that update in place rather than reloading. The sort of thing that feels less like a website and more like software in the browser.
Dashboards and internal tools
The admin screen, the reporting view, the tool your team lives in all day. Tables that sort and filter without a round trip, forms that validate as they're filled, and data that refreshes on its own — built to be used at speed, not just demoed.
Front-ends on an existing API
You've a back end, or we've built you one, and it needs a face. We wire a React front-end onto your API so the two are cleanly separated — there's more on that side of it on our API development and integration page.
Components and design systems
A set of reusable components — buttons, inputs, cards, the lot — that behave the same everywhere and are documented well enough that the next developer isn't guessing. It keeps a growing app consistent instead of drifting screen by screen.
React in part of a page
Not every site needs to be a single-page app. Sometimes the sensible move is a mostly-static site with one interactive island — a configurator, a live search, a booking step — running React only where it's needed and leaving the rest plain and quick.
Taking on an existing codebase
Inherited a React app and lost whoever wrote it? We can read our way in, fix what's broken, update the dependencies that have gone stale, and keep it moving rather than starting again from a blank folder.
When React is the right tool — and when it isn't
React is a means, not the point. If what you actually need is a fast, well-structured marketing site, a content-led front built on plain HTML and a little CSS will load quicker and cost less to run than the same thing wrapped in a framework — that's the ground our responsive web design page covers. Where React pays off is the interactive end: an app with real state, a tool people use for hours, a product rather than a page. If that's the shape of it, our web application development page sets out how we approach the build as a whole, back end included.
When a React project also needs server-side rendering or static generation for search visibility, Next.js development is usually the natural frame around it — it adds routing, SSR and API routes without abandoning the React components you'd write anyway.
React and TypeScript, together
We write React in TypeScript by default. The two fit: typed props and state catch a whole class of mistake before the page ever loads, and they make a large app far easier to change six months on, when the person editing it has forgotten exactly what every component expected. We test the parts worth testing with Jest or Vitest, so a later change doesn't quietly break something three screens away.
Keeping a React app quick
A React app's weak spot is weight. Ship the whole thing in one bundle and a phone on a weak signal sits on a blank screen while it downloads and parses. We split the code so each screen pulls only what it needs, keep an eye on what the dependencies drag in, and test on real devices rather than a fast laptop. When an existing app has slowed to a crawl, our website speed optimisation page is where that work starts.
Got something interactive in mind?
Tell us what the app needs to do and we'll talk through whether React is the right fit and how we'd build it.
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