React development services for fast, maintainable web applications

Choosing the right rendering strategy

Not every React application should be built the same way. A logged-in dashboard behind authentication works well as a client-rendered single-page application. A marketing site or content platform that must rank in search engines benefits from static generation or server-side rendering. Many products need both.

We choose per route: static generation for content that changes rarely, server rendering or React Server Components in Next.js where data must be fresh and indexable, and client rendering for highly interactive views. Making this choice early avoids expensive rewrites when SEO or performance requirements appear later.

How we build React applications

TypeScript is the default on every project, with strict mode enabled. Types for API responses are generated from OpenAPI or GraphQL schemas where possible, so front-end and backend APIs cannot silently drift apart.

We keep state close to where it is used. Server data is handled with TanStack Query or framework data loaders, which take care of caching and revalidation; global client state is kept minimal and introduced only when it is shared across distant parts of the interface. Forms use schema validation shared with the backend where practical.

• Component architecture that separates presentation from data fetching
• Design systems built on accessible primitives, documented in Storybook
• Unit and component tests with Vitest and Testing Library, end-to-end tests with Playwright
• Linting, formatting and type checks enforced in CI

Performance and Core Web Vitals

Users notice slow interfaces, and search engines measure them through Core Web Vitals: Largest Contentful Paint, Interaction to Next Paint and Cumulative Layout Shift. We set performance budgets at the start and check bundle size and Lighthouse scores in CI.

In practice the biggest gains usually come from shipping less JavaScript: route-based code splitting, removing heavy dependencies, server rendering critical content, optimizing images and fonts, and avoiding unnecessary re-renders in large lists and forms. We profile with the React DevTools Profiler and real-user metrics instead of guessing.

Accessibility as a baseline

We build to WCAG 2.2 AA: semantic HTML first, correct focus management in dialogs and menus, keyboard support for every interaction and sufficient color contrast. Accessibility is checked with automated tools in CI and manually with a keyboard and screen reader, because automated checks catch only part of the issues.

Taking over an existing React codebase

We often inherit React applications that have grown quickly: class components mixed with hooks, outdated build tooling, untyped code and global state used for everything. We start by assessing the build, dependency health, bundle size and test coverage, then improve incrementally while features keep shipping.

Typical steps include migrating from Create React App or webpack to Vite or Next.js, introducing TypeScript file by file, upgrading to the current React version and replacing hand-written data fetching with a caching layer. When the front end is part of a broader product effort, this sits within our web application development work.