React Development Services

PS3G provides React development services for the screens your customers and staff actually use: customer portals, dashboards, booking and ordering flows, admin tools and the public-facing parts of a product. That covers a founder who needs a first version that looks finished, a growing company replacing a tangle of forms and spreadsheets with one web application, and a product group inside a larger organization that wants a front end built to its design system and accessibility standards. We build in React, Next.js and TypeScript, and connect the result to .NET, Node.js or whatever API you already have.

React Development Services: what we build and for whom

React is the most widely used front-end library, which matters for two practical reasons: the hiring pool is large, and most design systems, component libraries and tooling target it first. As a React development company we use it for three kinds of work.

• Front ends for web applications. The interface of a portal, a dashboard or an internal tool, built as a component library plus screens, talking to an API. The full-stack version is our web application development service.
• Next.js sites and products. Marketing sites, documentation, e-commerce storefronts and products that need server rendering for search visibility and fast first loads.
• Rescues and upgrades. React applications built elsewhere that are slow, untested, stuck on an old version or failing accessibility review, brought back to a maintainable state without a rewrite.

React is the wrong tool for some jobs. A content site with a few forms belongs in WordPress, not a custom build. A small internal CRUD screen for a team that already runs .NET may be faster in Blazor; we build both and wrote a guide on Blazor vs React to help you decide. A team with no JavaScript skills and no plan to hire them should think twice before owning a React codebase, and we will say so in the assessment.

What the service covers

Our reactjs development services cover design handoff to launch and maintenance. The table lists the typical work and our default tools; we follow your standards where you have them.

Type of work	What it looks like	Typical tools
Application front ends	Routing, authentication flows, forms, tables, dashboards, role-based screens, error and loading states	React, TypeScript, Vite, React Router or TanStack Router, React Hook Form, Zod
Next.js development	Server rendering, static generation, incremental revalidation, app router, SEO metadata, edge and server functions	Next.js, TypeScript, Vercel or Azure or AWS hosting
Design systems and component libraries	Tokens, themed components, documentation, versioned packages shared across products	Radix or shadcn/ui or MUI, Tailwind CSS or CSS Modules, Storybook
Data and state	Server-state caching, optimistic updates, offline handling, client state where needed	TanStack Query, Zustand or Redux Toolkit, generated API clients from OpenAPI
Performance	Core Web Vitals, code splitting, image and font strategy, rendering profiles	Lighthouse, React Profiler, bundle analysis
Accessibility	Keyboard operation, screen-reader semantics, contrast and focus management, WCAG conformance review	axe, Testing Library, manual assistive-technology passes
Quality and delivery	Component and integration tests, end-to-end tests, visual regression, pipelines	Vitest, Testing Library, Playwright, GitHub Actions or Azure DevOps

If you need engineers rather than a delivered project, see hire React developers for a monthly arrangement inside your team.

How we work

React projects go wrong at the seams: between design and build, between front end and API, and between launch and maintenance. The process below is built around those seams.

1. Assessment. The screens, the users, the devices, the API that exists or needs to exist, the design assets, and the accessibility and browser requirements. For an existing React codebase, a read of the structure, dependencies, tests and performance, written up as risks and quick fixes.
2. Design and architecture. If there is no design, our UI/UX design team produces flows and screens first; if there is, we map it to a component inventory. The architecture note settles rendering (client, server or mixed), routing, state, authentication and the API contract.
3. Walking skeleton. Authentication, one real screen against the real API, the component library scaffold, tests, linting and a deployed preview environment before the rest of the screens.
4. Increments. Two-week deliveries with a demo on a preview URL for every pull request, so reviewers see screens rather than diffs; accessibility and performance checks run in the pipeline, not at the end.
5. Launch and handover. Core Web Vitals and accessibility review, browser and device matrix testing by our testing center of excellence, documentation, then handover or a maintenance agreement under defined SLAs.

Team and stack choices

A lead front-end engineer in the United States owns the architecture and your weekly conversation; React engineers at our India delivery center add capacity with overlapping hours; a designer joins when screens are not yet defined. New work is TypeScript on a current React release, Vite for applications and Next.js where server rendering or search visibility matters. We generate API clients from an OpenAPI document so the front end and backend cannot quietly disagree.

Share your designs or your current app and we will come back with a fixed-scope quote.

Where this fits with the rest of your systems

A React front end is only as good as the API behind it, so the integration is where we spend our design effort. React web development at PS3G starts with the contract: what the API returns, how authentication works, how errors are shaped, and how the front end will be deployed relative to the backend.

Because PS3G’s core engineering practice is .NET and the Microsoft stack, React in front of ASP.NET Core is our most common pairing. The pattern is an ASP.NET Core API with an OpenAPI document, a generated TypeScript client, authentication through Entra ID or another OpenID Connect provider, and a React application hosted either as static files behind the API or as a Next.js app on its own. The same shape works with Node.js, Java and Python backends. For organizations that also need mobile, the React codebase shares logic and components with React Native, which is covered on our React Native development page.

Next js development also fits content and commerce stacks: a headless CMS or a commerce platform supplies the content, Next.js renders it, and the result is fast and indexable. That is often the right replacement for a WordPress site that has outgrown its theme.

Examples by organization size

These are typical engagement shapes, not named clients.

• A founder with a first product. A fixed-scope React application with authentication, a small component library, the core screens and a preview pipeline, built so the first in-house hire inherits tests and a design system rather than a pile of pages.
• A growing company replacing forms and spreadsheets. A dedicated engineer or pair for a few months, building an operations portal in React on top of a new or existing API, with role-based screens, tables that handle real data volumes, and accessibility built in because staff use it all day.
• A product group inside a larger organization. A customer-facing Next.js application built to the organization’s design system, security review, browser matrix and WCAG target, with contract tests against internal APIs and a handover to the internal front-end team.

Engagement models

• Fixed-scope project: a defined deliverable and price for a front end, a Next.js site or a component library.
• Dedicated team or staff augmentation: React engineers inside your team on a monthly basis, scaled as the roadmap changes.
• Managed services: we run, update and improve your React applications under defined SLAs, including framework upgrades.
• Advisory: a code, performance or accessibility review, or a front-end architecture decision.

How we start: a first conversation, a short assessment, a written proposal.

Why PS3G for React work

We have built software for more than a decade from Wilmington, Delaware and our India delivery center, with Microsoft-certified and open-source-certified engineers on the same teams, which is why React and .NET work well together in our projects. We build and run our own products, so we maintain front ends for years, not just through launch. Our UI/UX designers and our testing center of excellence are part of the delivery team rather than separate departments.

Related services

• All services: everything we build, test, run and advise on.
• Hire React developers: engineers inside your team on a monthly basis.
• Web application development: the full-stack version, API included.
• UI/UX design: flows, screens and design systems before the build.
• .NET development: the ASP.NET Core backend behind most of our React front ends.

Frequently asked questions

What do your React development services include?

Application front ends, Next.js sites and products, design systems and component libraries, performance and accessibility work, and the rescue of React applications built elsewhere. Every build comes with TypeScript, tests, a preview pipeline and documentation, and is available as a fixed-scope project, staff augmentation, a managed service or an assessment.

Should we use Next.js or plain React?

Next.js when search visibility, fast first loads or server rendering matter: marketing sites, commerce, content products and public-facing applications. Plain React with Vite when the application lives behind a login and the backend is already in place, where the simpler build and hosting are an advantage. Many organizations run both, and we will recommend one in the assessment.

Can you connect a React front end to our .NET backend?

Yes; it is our most common pairing. We generate a TypeScript client from the ASP.NET Core API’s OpenAPI document, use a shared identity provider for authentication, and host the React application either with the API or on its own. PS3G builds both sides, so the contract is designed rather than negotiated afterwards. The same approach works with Node.js, Java and Python APIs.

Can you fix a slow or untested React application?

Usually without a rewrite. We profile rendering and bundles, fix the expensive patterns, add tests around the screens that matter, bring dependencies and React itself to supported versions in steps, and put a pipeline in place so the application stops drifting. The work proceeds while the application stays live, and you receive a written assessment before anything changes.

Do you build accessible React applications?

Yes. Keyboard operation, screen-reader semantics, focus management and contrast are part of the component library from the start, checked automatically in the pipeline and manually with assistive technology before launch. We work to the WCAG level your organization requires and document the result, which matters for public-sector, education and healthcare applications in particular.