React Development Services

Review a code sample, component architecture and a working workflow. Ask how server data and local state are handled, what is tested automatically, and what users see when an API call fails. Payyro’s next version is being built with React and Next.js; its first release shipped on Webflow and Wized. For your project, agree the acceptance criteria and review a first slice running against the staging API before extending the build.

A technical scope with acceptance criteria; the component architecture, design tokens and a shared library; every screen in scope with its loading, empty and error states; routing, state management and a typed API layer; the third-party services in scope; unit, integration and end-to-end tests with a deployment pipeline; accessibility, speed and security checks; error monitoring; and a staged release followed by the handoff. Libraries are chosen in the scope to suit your team, not fixed in advance.

React supplies the interface components; an application also needs decisions about routing, data loading, rendering and deployment. Next.js is a React framework that brings those capabilities together and supports different rendering strategies by route. We compare the existing codebase, public and private routes, API access, hosting and your team’s maintenance needs before choosing the architecture. React Native addresses native mobile interfaces. A content-focused website can also use Astro with selected interactive components.

Yes. We start with a short review: dependencies and how out of date they are, where state lives, how components are shared, what is tested and what breaks most often. Then we agree whether to refactor in place or replace the worst parts screen by screen while the app keeps running. We avoid a full rewrite unless the review shows it is cheaper, and each step ships behind the same acceptance criteria as new work.

When it is scoped, yes. A React engagement assumes a backend exists or is being built by your team, and we agree the API contract with them. If you need the server, database, roles and hosting built too, that is Web App Development, and the front end is one part of it. If the product is not designed yet, Web App Design or Product Discovery comes first.

Approved designs for at least the first screens, access to your repository or a decision to start a new one, API documentation with a staging backend, sandbox keys for any payment, sign-in or analytics service, and one product owner who can accept each slice. If the design or the API is still moving, the foundation and component library can start while they settle.

As written acceptance criteria agreed before the build. Typical ones: keyboard and screen-reader use on key flows, contrast and focus states, a size and speed budget for key screens, no secrets in the browser bundle, dependencies scanned in the pipeline, and errors reported to a monitoring tool with a named owner. Each release is checked against them, and the results form part of your test evidence.

The source code in your repository, the build running on your hosting, documentation of the components and data layer, test reports, release notes, a runbook for deploys, and a map of who owns what after release. Your engineers can take over from there. Or fixes, new features, usability testing, a UX Audit or design work can continue with us, each on its own scope.

How many screens and workflows are in scope, how much state they share, how complete and stable the API is, how many third-party services connect, whether an existing codebase has to be reviewed first, the quality criteria you need, and how ready the design is. We set a custom scope and estimate in the proposal, fixed or phased, and agree the timeline once scope, access, dependencies and acceptance criteria are clear.

Designing the product from scratch, backend services and databases, native mobile apps, content, and the fees and account actions of your hosting and other providers, which stay in your name. We agree security, speed and recovery requirements around the key journeys, then deliver the component and data layer with the checks your team needs for later releases.