When React is the right choice
React suits products where the interface is the product: lots of interaction, changing state, real-time updates, data tables, charts, forms, editors, drag and drop and long-lived sessions after login. It has a vast ecosystem, a large hiring pool and strong tooling, which lowers long-term risk.
React is less ideal as the only tool when the main goal is search visibility for content-heavy public pages. A pure client-side React app sends mostly empty HTML to the browser and builds the page with JavaScript, which can slow first load and complicate indexing. For those cases we usually pair React with a framework that renders on the server, which is exactly what Next.js does. In short: React for applications behind a login or inside a controlled environment, Next.js when public pages must rank and load fast. Many products use both.
What we build with React
SaaS front ends
Multi-tenant interfaces with onboarding, billing screens, settings, roles and analytics.
Admin panels and dashboards
Data tables with filtering, sorting and export, charts, approval flows and real-time widgets.
Customer and partner portals
Self-service areas where users view orders, invoices, documents and support history.
Internal tools
Operations, finance and logistics tools that replace spreadsheets.
Complex forms and workflows
Multi-step wizards, conditional fields, validation and autosave.
Data-heavy interfaces
Virtualised tables with thousands of rows, maps, timelines and scheduling views.
Real-time features
Chat, notifications, live status and collaborative views using WebSockets or server-sent events.
Progressive web apps
Installable, offline-capable web apps for field use.
Front ends for AI features
Chat interfaces with streaming responses, document upload and review screens.
Migration and modernisation
Moving jQuery, Angular.js or older React class-component code to current React with TypeScript.
How we structure React applications
This is where experience shows. The choices below are not fashionable; they are what keeps a codebase healthy after two years and ten developers.
TypeScript by default
Types catch a large class of bugs before they run, document data shapes and make refactoring safe. We use strict settings from day one.
Feature-based folders
Code is grouped by what it does for the user (orders, billing, reports) rather than by technical type. A new developer can find everything about a feature in one place.
Small, composable components
A design system of reusable pieces such as buttons, inputs, tables and modals keeps the interface consistent and speeds up new screens. We often build it on accessible primitives such as Radix UI or similar headless libraries, styled with Tailwind CSS.
Server state and client state kept separate
Data that lives on the server (lists, records) is fetched, cached and refreshed by a tool such as TanStack Query. Client state (open panels, filters, form drafts) stays local or in a small store such as Zustand. Putting everything into one global store is a common source of complexity.
Forms done properly
React Hook Form with schema validation (Zod), so rules are defined once and shared between the form and the type definitions.
API contracts
Typed API clients generated from OpenAPI or schema definitions where possible, so front end and back end do not drift apart.
Routing and code splitting
Route-level lazy loading, so users download only what they need.
Error handling
Error boundaries, clear empty and loading states and retry behaviour, because real networks fail.
Testing
Unit tests for logic, component tests with React Testing Library, end-to-end tests with Playwright for the journeys that must never break.
Performance
We measure before optimising: React DevTools profiler, bundle analysis, Lighthouse and Web Vitals. Typical fixes include memoisation where measured, virtualised lists, image optimisation and removal of heavy dependencies.
Accessibility
Semantic HTML, keyboard support, focus management and ARIA only where needed, tested with screen readers. This is a legal and ethical requirement for many clients, and it improves usability for everyone.
React compared with the alternatives
We use the right tool for the job, so here is a plain comparison.
| React | Next.js | Vue | Angular | |
|---|---|---|---|---|
| What it is | UI library | React framework with routing and server rendering | UI framework | Full framework |
| Best for | Apps behind login, dashboards, SaaS | Public sites and apps needing SEO and speed | Smaller to mid-sized apps, teams that prefer its conventions | Large enterprise apps with strict structure |
| Ecosystem and hiring | Very large | Large, builds on React | Good | Good, narrower |
| Learning curve | Moderate | Moderate to steep | Gentle | Steeper |
| SEO out of the box | Needs extra work | Strong | Needs extra work | Needs extra work |
If you are choosing between React and Next.js, the Next.js page explains how to decide. If you need a mobile app too, Flutter or React Native may be the better option for the mobile side, and we will compare them with you.
Rescuing a React codebase that has become hard to change
We are often asked to look at an app that works but that nobody wants to touch. The symptoms are familiar: components with a thousand lines, props passed through six layers, state spread across several stores, copy-pasted logic, slow builds, flaky tests and a fear of upgrading React.
Our approach is a short audit followed by incremental repair. We review the folder structure, dependency health, bundle size, test coverage, type safety and the places where bugs cluster. Then we agree a plan that fits around your roadmap. Typical steps are to introduce TypeScript file by file, extract shared components into a design system, separate server state from client state, delete dead code, add tests around the riskiest flows and upgrade dependencies in small, reversible steps. Teams keep shipping features throughout. A full rewrite is rarely necessary, and when it is, we recommend replacing one area at a time.
Front-end security that is easy to forget
The browser is an untrusted environment, so security needs deliberate attention. We avoid storing sensitive tokens where scripts can read them, prefer secure, HTTP-only cookies for sessions, escape and sanitise user-generated content, guard against cross-site scripting by avoiding unsafe HTML injection, set a content security policy, keep dependencies patched with automated scanning and make sure permission checks happen on the server, not only by hiding buttons in the interface. The front end improves the experience; the back end enforces the rules.
Real-time and data-heavy interfaces
Some of the most demanding React work involves large or fast-changing data. A logistics dashboard may track hundreds of vehicles on a map. A finance screen may list tens of thousands of transactions. A support tool may stream new tickets as they arrive.
For these cases we use virtualised lists and tables so that only visible rows are rendered, debounce and batch updates so the interface does not repaint on every message, move heavy calculations off the main thread with web workers, and choose WebSockets or server-sent events depending on whether communication is two-way. We design clear loading, stale-data and reconnection states, so users know when what they see might be out of date. Filters and sorting happen on the server when the data set is large, with the interface staying responsive while results load. These choices are invisible when done well, and obvious when not.
Design systems and living documentation
Consistency is cheaper to build early than to restore later. For longer projects we set up a component library documented in Storybook, with design tokens for colour, spacing and typography shared between designers and developers. New screens are assembled from tested parts, visual regression tests catch accidental changes and new developers can see every component and state in one place. The result is a front end that stays coherent as the team and the product grow.
Our development process
- 01
1. Discovery and UX
We clarify users, journeys and priorities, then design wireframes and a prototype. We agree what the first release contains.
- 02
2. Architecture and design system
Folder structure, state strategy, API contract, component library and coding standards, documented before the team scales.
- 03
3. Sprint-based build
Two-week sprints with demos, code review on every change and a staging environment you can open at any time.
- 04
4. Quality assurance
Automated tests in continuous integration, manual testing across browsers and devices, accessibility checks and performance budgets.
- 05
5. Deployment
Automated pipelines to your hosting (Vercel, AWS, Azure, Google Cloud or your own servers), with environments for staging and production.
- 06
6. Monitoring and support
Error tracking (Sentry or similar), performance monitoring and a maintenance plan for dependencies and browser changes.
Working with your team
Many clients come to us with a back end and a designer, and need a reliable front-end team. We can work from your designs in Figma, agree an API contract with your back-end developers and plug into your tools: Jira, GitHub, Slack, Linear. We can also take on the whole project, back end with Laravel or Node.js included. If you need to scale up or down, we can supply developers on a monthly basis.
Technology stack
| Area | What we typically use |
|---|---|
| Language and framework | React, TypeScript, Next.js, Vite |
| Styling and UI | Tailwind CSS, Radix UI, shadcn/ui, Material UI, CSS Modules |
| State and data | TanStack Query, Zustand, Redux Toolkit where appropriate, React Hook Form, Zod |
| Visualisation | Recharts, D3, Chart.js, maps libraries |
| Testing | Vitest, Jest, React Testing Library, Playwright, Storybook |
| Back-end partners | Laravel, Node.js, Python APIs |
| Delivery | GitHub Actions, Docker, Vercel, AWS, Azure, Google Cloud |
What a good handover looks like
Whether we build the project or you take it in-house afterwards, the code should be easy to inherit. We leave you with a README that lets a new developer run the app in minutes, architecture notes that explain the major decisions, a documented component library, a test suite that runs in CI, environment and deployment instructions, and a recorded walkthrough of the codebase. If you ever want to change vendors, you can.
Industries we serve
We build React applications for SaaS and software products, e-commerce and retail, logistics and supply chain, healthcare and wellness, education, finance and fintech, real estate and travel. Domain knowledge matters: a scheduling interface for a clinic and a dashboard for a freight forwarder share components but need quite different thinking.
Quality you can verify
Every React project we deliver comes with measurable standards: a bundle-size budget, a Lighthouse threshold for performance and accessibility, a minimum test coverage on critical flows and zero type errors in continuous integration. If a change breaks one of these, the build fails before it reaches your users.
Benefits
Responsive interfaces
Fast interaction after the first load, with smooth updates.
Reusable components
A design system that makes each new screen quicker and more consistent.
A large talent pool
Easier hiring and handover than niche frameworks.
Rich ecosystem
Mature libraries for tables, charts, forms and editors.
Flexibility
Works with any back end and can grow into Next.js or React Native.
Maintainability
TypeScript, tests and clear structure reduce the cost of change.
Pricing and what influences it
React work is priced by what you build, not by the library. As a guide, the market ranges for web applications built with React on the front end follow the general web application pricing: a focused MVP often falls in the tens of thousands of dollars, a business platform or portal in the range of roughly $40,000 to $100,000, and SaaS products higher. See our web application development page for those ranges.
The factors that move cost most are the number of distinct screens and user roles, the complexity of data tables and forms, real-time features, custom charts and visualisations, accessibility and browser requirements, the maturity of the design (existing design system or not), and how much back-end and API work is included. If you already have designs and an API, front-end-only work costs considerably less. We can also work on a monthly basis for dedicated developers.
Frequently asked questions
What does React.js development cost?
It depends on the number of screens, user roles, data complexity, integrations and whether back-end work is included. A focused front end for an existing API costs far less than a full product. For a project estimate, share your designs or requirements and we will provide a range and the assumptions behind it.
Should I use React or Next.js?
Use React alone for applications behind a login, where search visibility does not matter. Use Next.js, which is built on React, when public pages need to rank in search, load quickly and be shared with rich previews. Many products combine them: a Next.js public site and a React-based application area.
Do you use TypeScript?
Yes, on almost every project. It reduces bugs, speeds up refactoring and makes the codebase easier for new developers to understand.
Can you work from our Figma designs?
Yes. We build from your designs, or our designers can create them. We set up a component library so the implementation stays consistent with the design.
Can you take over or fix an existing React codebase?
Yes. We start with a review of structure, dependencies, performance and test coverage, then recommend whether to improve incrementally or rebuild parts. Gradual improvement is usually safer than a full rewrite.
Can you build the back end as well?
Yes. We build APIs with Laravel, Node.js or Python, and can deliver the whole product, or work with your back-end team.
How do you make a React app fast?
We split code by route, keep bundles small, virtualise long lists, optimise images, cache server data and measure with real profiling instead of guessing. We set performance budgets and check them in continuous integration.
Can you build a mobile app from the same code?
Web React code does not run directly as a native mobile app. We can share logic, API clients and design tokens, and build mobile with Flutter or React Native depending on your needs.
Do you offer dedicated React developers?
Yes. You can engage developers on a monthly basis, either as a small team that we manage or as extra capacity inside your own team.