Hire React developers to build and scale your software.

There is no single rate for React developers. Cost depends on the seniority you need, the engagement model you choose (adding developers to your team, a dedicated team, or a fixed-price project), how long the engagement runs and the scope of the work. For React work, the biggest drivers are whether a design system already exists or has to be built, how much complex data handling and state the interface carries, and whether the job includes modernizing legacy class components or moving to a server-rendered framework. Share your requirements and we will come back with a quote for your situation.

You tell us the technology, seniority, role and team structure you need. We recommend React developer profiles that match those requirements, and you review the profiles and speak with the engineers yourself before anyone joins your team. When you interview, the areas worth testing are choosing between local state, context, a client store and a server-data cache; why components re-render and how to profile unnecessary renders; server components versus client components and where the boundary sits; diagnosing LCP and INP problems in a production React app; building an accessible custom component such as a modal or combobox; and testing with React Testing Library without relying on implementation details.

It depends on which engineers with the right skills are available when you get in touch, so we do not publish a fixed start date. Availability is part of the conversation when we recommend profiles, and the start date is agreed with you before the engagement begins.

Because you interview the engineers before anyone joins, fit is tested before work starts. If concerns come up once the engagement is running, raise them with us directly. How changes to the team are handled is set out in the terms you agree with us at the start.

A freelancer suits small, well-defined tasks you can manage yourself. A dedicated developer joins your team under your direction. A dedicated team adds several roles around your product, and a project-based team delivers a defined outcome end to end.

Split state by where it comes from. Server data belongs in a fetching cache such as React Query, which handles caching, refetching and loading states. Shared client state, like filters or a basket, suits a small store such as Zustand or Redux Toolkit. Form and UI state should stay local to the components that use it.

It depends on who reads the page first. Public pages that need search visibility and a fast first paint benefit from server rendering or static generation, usually through Next.js. Logged-in dashboards behind authentication often work well as client-rendered single-page apps, where SEO is irrelevant and responsiveness after load matters more.

Start with field data to find which metric is failing. A slow Largest Contentful Paint usually means oversized images or render-blocking JavaScript, while poor Interaction to Next Paint points to heavy re-renders or long tasks on the main thread. Code splitting, memoization where profiling justifies it and deferring third-party scripts are the usual fixes.

Semantic HTML first, ARIA only where native elements fall short. Custom widgets such as dialogs, menus and comboboxes need correct focus management and keyboard support, which is why many teams build on headless libraries like Radix UI or React Aria. Automated axe checks catch common issues, and manual keyboard and screen reader testing catches the rest.

Yes. Class components still run in current React, so modernization can be gradual. Components are converted to functions and hooks as they are touched, legacy lifecycle methods and deprecated APIs are replaced, and tests are added around behavior before refactoring so the interface stays the same for users.

Group code by feature rather than by file type, keep presentational components free of data fetching, and move shared UI into a design system package documented in a tool such as Storybook. Clear boundaries let several developers work in parallel without constant merge conflicts or duplicated components.

React Testing Library with Jest or Vitest for component behavior, tested the way a user interacts rather than through implementation details. Playwright covers end-to-end journeys such as sign-up and checkout across real browsers. Visual regression checks can be added to design systems where small styling changes matter.