React.js
Developer

A freelance React.js developer is an independent professional specialized in the React JavaScript library, who designs and builds web interfaces without going through an agency. You talk directly to the person writing the component code — no technical project manager standing between your requirements and the implementation. For a React application, where architecture decisions (state management, component breakdown, rendering strategy) have a direct impact on long-term maintainability, speaking directly to the developer avoids the information loss that comes with intermediaries.

A dashboard or SaaS interface of average complexity (authentication, a few data views, forms) typically takes 3 to 6 weeks to build. A more ambitious application with complex global state, multiple roles and third-party integrations takes several weeks to a few months depending on how many iterations are needed. A landing page or showcase site in React/Next.js can be delivered in a few days to two weeks. The exact timeline always depends on the initial scoping — I don't give a firm estimate before seeing the brief.

It depends on your rendering and SEO needs. Next.js is the right call if the content needs to be indexed by Google (showcase site, blog, e-commerce) thanks to SSR/SSG, or if you want built-in API routes without a separate backend. Plain React (with Vite) works well for an internal application, a dashboard behind authentication, or a business tool where SEO isn't a factor and client-side rendering is enough. This choice is made upfront, during scoping — reversing it mid-project gets expensive.

Yes. Taking over a project starts with an audit of the existing code and architecture: component structure, state management, outdated or poorly maintained dependencies. For a migration from jQuery, Angular or a classic WordPress front end, the preferred approach is progressive — replacing screens one at a time without interrupting production, rather than a risky full rewrite. The main point of attention is not breaking what already works during the transition.

Not by default — a purely client-side rendered (CSR) React application is historically poorly indexed, because the content only exists after the JavaScript has run. This is something I address from the architecture stage: SSR or SSG via Next.js when content needs to be visible to Google, metadata and structured data configured component by component, Core Web Vitals monitored from day one of development. For a purely internal application (authenticated dashboard), SEO simply isn't a concern — the distinction is made during scoping.

Yes, I also develop in Node.js — see the dedicated Node.js developer page. For a project that needs both a React front end and a backend, that means a single point of contact across the whole stack, an API contract defined and honored on both sides, and no gap between two providers who don't always coordinate well on data formats or error cases.