Short answer: Cyber Defence, a Hisar, Haryana software company led by full-stack developer Amit Kumar (CEH, CRTA), builds fast, secure React.js applications for businesses across India remotely. We deliver single-page apps, dashboards, and PWAs with modern hooks and components, flat written pricing, and 100% code ownership.
What is React.js and who needs it?
React.js is a JavaScript library, created and maintained by Meta, used to build interactive user interfaces. Instead of reloading the whole page every time a user clicks, React updates only the parts of the screen that change. This is the core idea behind a single-page application (SPA): the browser loads one HTML shell, and React swaps content in and out instantly. The result is an app that feels fast, smooth, and closer to native software than a traditional website.
React works by breaking your interface into small, reusable pieces called components — a navigation bar, a product card, a chart, a form. Each component manages its own logic and can be reused across the app. Modern React uses hooks (useState, useEffect, useContext, custom hooks) to handle state and side effects cleanly inside function components, which has replaced older class-based patterns.
You need React.js development services if you are building any of the following:
- A SaaS product or web application with lots of user interaction
- An admin dashboard or analytics panel that updates in real time
- A customer portal, booking system, or membership area
- A Progressive Web App (PWA) that works offline and installs like an app
- A high-traffic marketing site that needs speed and SEO (via Next.js, a React framework)
What is included in our React.js development service
When you hire Cyber Defence for React development, you get an end-to-end build, not just code. Every project includes:
- Discovery and scoping — a free call to understand your goals, users, and features
- UI/UX design — clean, responsive interfaces that work on mobile and desktop
- Component architecture — reusable, maintainable components with a sensible folder structure
- State management — React hooks, Context API, or Redux/Zustand where the app genuinely needs it
- API integration — connecting to your backend, payment gateways, or third-party services
- Performance optimization — code-splitting, lazy loading, and Core Web Vitals tuning
- SEO — server-side rendering with Next.js where search visibility matters
- Security — input validation, XSS/CSRF protection, and secure auth, reviewed by a certified ethical hacker
- Testing and deployment — QA across devices and a production launch you can rely on
SPA vs SSR: which React approach is right for you?
Not every React project should be a pure SPA. If SEO and first-load speed matter (an e-commerce store, a content-heavy site), we use Next.js for server-side rendering (SSR) or static generation. For internal tools and dashboards behind a login, a client-side SPA is faster to build and perfectly suitable. We recommend the right approach honestly, based on your goals — not on what is easiest for us.
Our React.js development process
- Free consultation — we discuss your idea and give honest feedback on scope and cost
- Written proposal — a fixed, transparent quote with milestones and timeline
- Design and prototype — you approve the look before we build
- Development in sprints — you see working progress regularly, not a black box
- Testing and review — cross-browser, mobile, and security checks
- Launch and handover — full source code, documentation, and 100% ownership
- Support — optional maintenance and feature additions
Honest React.js development pricing in India
We publish flat, written pricing so you never get surprised by a bill. Costs depend on features, screens, and integrations, and a final quote is scoped after a free call.
| Project type | Indicative price (INR) | Typical timeline |
|---|---|---|
| React landing page / marketing site | Rs 8,000 - Rs 45,000 | 1-3 weeks |
| Business website with React front-end | Rs 25,000 - Rs 60,000 | 2-4 weeks |
| Custom React web app / SaaS / dashboard | Rs 1,00,000+ | 6-12 weeks |
| PWA with offline support | Rs 1,00,000+ | 6-10 weeks |
Custom React applications start at Rs 1,00,000+ and are scoped after a free consultation. Simple websites start at Rs 8,000. EMI options are available, and every project comes with 100% code ownership, SEO built in, and security reviewed by a certified ethical hacker.
Our React tech stack
- Front-end: React 18/19, Next.js, TypeScript, Tailwind CSS
- State: React hooks, Context API, Redux Toolkit, Zustand
- Back-end (when needed): Node.js, Express, MongoDB, PostgreSQL, MySQL
- Tooling: Vite, ESLint, Prettier, Jest, React Testing Library
- Deployment: Vercel, VPS, Docker, CI/CD pipelines
If you are still deciding on your stack, read our guide on the best tech stack for web development, and our explainer on what React actually is.
Common React projects we build
Over the years we have shipped a wide range of React applications for Indian businesses. The library is flexible enough to power almost any interactive interface, and here are the project types clients ask for most often:
- Admin dashboards — real-time panels with charts, tables, filters, and exports for internal teams
- Customer portals — login areas where users track orders, tickets, invoices, or subscriptions
- SaaS front-ends — the polished, fast interface layer on top of your product backend
- Booking and scheduling apps — calendars, availability, and instant confirmation flows
- E-commerce storefronts — product catalogues, cart, and checkout with Next.js for SEO
- Educational and LMS platforms — course players, quizzes, and progress tracking
Because React components are reusable, a well-built app also gets cheaper to extend over time. New features reuse existing building blocks instead of starting from scratch, which keeps your long-term maintenance cost lower than a patchwork of plugins and templates.
React performance and Core Web Vitals
A slow React app hurts both conversions and rankings, so performance is part of the build, not an afterthought. We apply code-splitting so users only download the JavaScript they need, lazy-load heavy components and images, memoize expensive renders, and tune bundle size. Where first-load speed and SEO both matter, we render on the server with Next.js. The goal is a real-world green score on Largest Contentful Paint, Interaction to Next Paint, and Cumulative Layout Shift on mid-range Indian mobile devices and networks, not just on a fast laptop.
Why choose Cyber Defence for React development?
- Founder-led engineering. Amit Kumar is a full-stack developer with CEH and CRTA credentials, so security is designed in, not bolted on.
- Flat, written pricing. No hidden costs, no scope creep surprises.
- 100% code ownership. The code is yours — repo, credentials, everything.
- Remote across India from Hisar. We serve clients in Delhi, Bangalore, Mumbai, and everywhere in between.
- ISO-certified and GeM-registered. Credible for both private companies and government buyers.
- No fake reviews, no inflated claims. Honest scoping and honest timelines.
Explore our related services: software development in Bangalore, web development in Hisar, and IT company in Delhi. Want to learn React yourself or upskill your team? See our courses. For the bigger picture, read our custom software development guide. Building a full-stack app? See our MERN stack development services.
FAQ
How much does React.js development cost in India?
A React landing page costs between Rs 8,000 and Rs 45,000, while a custom React web app or SaaS starts at Rs 1,00,000+ and is scoped after a free call. Final pricing depends on the number of screens, integrations, and features.
Is React.js good for SEO?
A pure client-side React SPA can be weak for SEO, but we solve this with Next.js server-side rendering or static generation, which lets search engines and AI crawlers index your content fully. We build SEO in from day one.
Will I own the React source code?
Yes. You get 100% ownership of the source code, repository access, and all credentials on handover. There is no lock-in, and you are free to host or extend the app however you like.
Do you build Progressive Web Apps with React?
Yes. We build PWAs that install on a phone or desktop, work offline, and send push notifications, using React with service workers. These typically start at Rs 1,00,000+ depending on features.
Do you work with clients outside Haryana?
Yes. We are based in Hisar, Haryana and work remotely with clients across all of India, including Delhi, Bangalore, Mumbai, Pune, and Hyderabad, using video calls and shared project tools.
Can you take over an existing React project?
Yes. We regularly audit, fix, and extend existing React codebases, including performance optimization and security hardening by our certified ethical hacker.
Ready to build a fast, secure React application? Call Cyber Defence at +91-75175-72000 for a free consultation and a flat, written quote.