React Development Services

What we build with React

Why React — and when not

React is the most widely used library for building user interfaces, with a huge ecosystem, mature tooling and the largest pool of developers. That makes it a safe long-term bet for most products.

It is not always the best tool. A simple content website may be better served by WordPress or a static site generator, and some teams prefer Vue’s gentler learning curve. We will tell you if React is overkill for your project.

Our React stack

React services

• New builds — React and Next.js apps from design to deployment.
• Upgrades & migrations — class components to hooks, Create React App to Vite or Next.js, older React versions to current.
• Performance tuning — rendering, bundle size and Core Web Vitals.
• Code reviews — architecture and quality review of existing React codebases.

React performance in practice

React itself is fast, but applications can become slow as they grow. The usual culprits are components that re-render far more often than necessary, large lists rendered all at once, heavy libraries loaded on every page and data fetched repeatedly instead of cached. We diagnose problems with the React Profiler and browser performance tools rather than guessing.

Typical fixes include restructuring state so updates affect only the components that need them, virtualising long lists and tables, splitting code so each route loads only its own dependencies, caching server data with TanStack Query, and moving rendering to the server with Next.js where it improves load time. The result is measured in Core Web Vitals and in how responsive the app feels on mid-range devices.

Server components and modern React

Recent versions of React and Next.js introduced React Server Components, which render parts of the interface on the server and send less JavaScript to the browser. Used well, they improve load times and simplify data fetching; used carelessly, they create confusing boundaries between server and client code. We apply them where they bring real benefits — content-heavy pages, data-rich dashboards, SEO-critical routes — and keep interactive parts as client components, with clear conventions so your team understands where each piece of code runs.

React frameworks compared

React itself is a UI library; most projects pair it with a framework or build tool. The choice shapes routing, rendering and hosting.

Create React App is no longer recommended for new projects; we migrate existing CRA apps to Vite or Next.js depending on their needs.

State management without over-engineering

Many React codebases become hard to maintain because every piece of data goes into one global store. We separate state by kind:

• Server state — data from APIs, handled by TanStack Query or framework loaders with caching and refetching
• URL state — filters, tabs and pagination kept in the URL so views can be shared
• Form state — React Hook Form with schema validation
• Local UI state — useState and useReducer close to the component
• Shared client state — Zustand or Redux Toolkit only for genuinely global concerns

This usually removes most of the code that lived in a global store and makes components easier to test.

A typical React engagement

1. Assessment1–2 weeks

   Review architecture, React version, bundle size, accessibility and tests; or define the stack for a new build.

2. Component foundation2–3 weeks

   Design tokens, accessible base components and Storybook documentation.

3. Feature sprintsOngoing

   Two-week sprints delivering working features with demos and reviews.

4. Quality gatesContinuous

   Type checks, linting, unit tests and Playwright journeys in CI before every merge.

Testing React applications

Upgrading an older React codebase

• Move class components to function components where they are being changed anyway
• Upgrade React and React DOM, then fix deprecated APIs flagged in strict mode
• Replace unmaintained libraries (old routers, form and animation libraries)
• Introduce TypeScript gradually, starting with shared components and API types
• Switch the build from Create React App or old webpack configs to Vite or a framework
• Add tests around fragile areas before refactoring them

Need extra hands? See hire React developers or Next.js development.

Accessibility built into components

Accessibility is cheapest when it lives in shared components rather than being patched page by page. Our base components handle focus management in dialogs and menus, keyboard navigation, visible focus states, labelled form fields with error messages announced to screen readers, and colour contrast that meets WCAG 2.2 AA. Where a well-tested headless library such as Radix UI or React Aria already solves the hard parts, we build on it rather than reinventing complex widgets.

Measuring React application quality

• JavaScript bundle size per route, with budgets enforced in CI
• Interaction to Next Paint from real users on slower devices
• Error rates from client-side monitoring after each release
• Test coverage on critical journeys rather than an overall percentage
• Time for a new developer to ship their first change

These numbers guide where to invest — whether that is splitting bundles, simplifying state or adding tests around fragile areas.

When React is not the best fit

React is a strong default, but not always the right choice. Content-heavy sites with little interactivity can ship far less JavaScript with Astro or a traditional CMS theme. Teams that want a batteries-included framework with strong conventions may prefer Angular. Small teams building on Laravel may move faster with Livewire or Inertia with Vue. We recommend the option that fits the product and team rather than the one most familiar to us, and we are happy to explain the trade-offs in plain language.

Work with us

Need a full product? See web application development. Need React engineers in your own team? See hire React developers.

This page is part of Frontend Development Services — see the full overview for related services, approach and pricing.