01 · Craft
Proven at production scale
We built and maintain NoticeNinja's React frontend - millions of records, enterprise users, no junior 'todo app' architecture dressed up as a dashboard.
9M+ recordsTypeScriptEnterprise UI
React 18 · TypeScript by default
React InterfacesBuilt to Stay Fast.
We design and ship React applications that hold up under real data - SaaS dashboards, enterprise portals, and design systems. NoticeNinja's React frontend manages 9 million+ tax notices. TypeScript is not optional. NDA on day 1.
Component architecture, not a pile of screens
TypeScript props, hooks, and API types
AI-assisted UI, senior-reviewed merges
React 16 → 18, CRA → Vite, JS → TS
NDA on Day 1Full IP Ownership1-Week Free TrialZero `any` Policy
4.9 / 5.0
Rated on Clutch
Top Rated
Verified on Upwork
9M+
Records on a React app
15+ Countries
Clients served globally
8+ Years
React in production
Same quality bar.
Senior React engineers who have shipped data-heavy production UIs - amplified by Cursor, Claude, and Codex. Architecture stays human. Boilerplate does not.
02 · Engineering
AI in the daily React workflow
Cursor and Claude speed up components, tests, and types. The engineer still owns the component tree, server-state model, and every merge.
CursorClaudeCodex
03 · Delivery
Visible UI every two weeks
Prototype in a week. Working React software every sprint. Performance, a11y, and types are not 'later' - they are in the first architecture.
1-week prototype2-week sprintsSenior QA
01 · Craft
Proven at production scale
We built and maintain NoticeNinja's React frontend - millions of records, enterprise users, no junior 'todo app' architecture dressed up as a dashboard.
9M+ recordsTypeScriptEnterprise UI
02 · Engineering
AI in the daily React workflow
Cursor and Claude speed up components, tests, and types. The engineer still owns the component tree, server-state model, and every merge.
CursorClaudeCodex
03 · Delivery
Visible UI every two weeks
Prototype in a week. Working React software every sprint. Performance, a11y, and types are not 'later' - they are in the first architecture.
1-week prototype2-week sprintsSenior QA
ReactJS Development Services
From a first React SPA to a design system, a Next.js app, and a migration off class components.
React Web Applications
Dashboards and portals that stay usable at scale.
Full-cycle React apps - component architecture, server state, auth, and production deploys. Built for SaaS dashboards, enterprise portals, and data-heavy interfaces.
Multi-tenant dashboards
Role-based views
Real-time UI
TypeScript throughout
Best for: Product teams shipping a complex web app, not a marketing site
Custom React Apps
Purpose-built UI - not a template with your logo.
Design systems from Figma, drag-and-drop workflows, rich text, virtualized tables, and EdTech exam UIs. Typed props. Documented components.
Design systems
Kanban / DnD
Virtual scrolling
Storybook
Best for: Teams whose UI is the product, not a wrapper around forms
React + Headless CMS
Editors own content. Engineers own the frontend.
Next.js or React apps on Strapi or Sanity - schemas, Studio customization, GROQ, ISR, and live preview without letting the CMS own your architecture.
Strapi / Sanity
ISR + webhooks
Live preview
Typed content
Best for: Content-heavy products that still need a real React application
SPA, PWA & Next.js
Match the render model to SEO, speed, and offline needs.
Client-rendered SPAs, PWAs with service workers, and Next.js App Router with Server Components. We pick the model - we do not default to one because it is fashionable.
SPA + JWT
PWA / offline
App Router
Edge middleware
Best for: Founders who need SEO, app-like UX, or both
React Native Companions
Shared logic across web and mobile where it earns its keep.
React Native apps that share types, API clients, and domain rules with the web React app - without forcing a fake 'one codebase' story where native UX would suffer.
Shared types
iOS + Android
Offline-first
Push / deep links
Best for: Products that need a mobile client without a second unrelated stack
AI Design-to-Code
Fast scaffolds. Production React after a senior pass.
Figma-to-React with v0, Lovable, and Bolt for speed - then typed, tested, accessible components a senior engineer will actually maintain.
Figma → React
v0 / Lovable
Typed refactor
A11y pass
Best for: Teams that want prototype speed without shipping AI slop
Upgrades & Migrations
Stay live while the stack catches up.
React 15/16 → 18, class components → hooks, CRA → Vite, JavaScript → TypeScript, Angular or Vue → React. Phased. Feature parity at each cut.
React 18
Hooks conversion
Vite
Strangler-fig
Best for: Codebases stuck on CRA, class components, or another framework
AI Features in React
Streaming UI, not a chatbot dumped in a modal.
LLM-backed search, copilots, and document tools with streaming responses, loading states, and cost controls - wired to your APIs, not a demo key in the browser.
Streaming chat
RAG UI
Optimistic flows
Server actions
Best for: React products adding intelligence without leaking secrets to the client
Tools we trust to run in production
We pick the React path that fits the product - Vite SPA, Next.js, or a design system - and write down why.
Core
Battle-tested core tools we ship in production every week.
Technologies
- React 18
- TypeScript
- Vite
- Next.js App Router
- React Native
Stack choices come with a written rationale. We recommend what the product needs, not what is fastest to demo.
Why teams pick Infynno for React Not just component fluency.
Production UIs, TypeScript discipline, and a delivery model that puts you next to the engineer - not behind an account manager.
Proven at production scale
We built and maintain NoticeNinja's React frontend - millions of compliance records for US enterprise clients. Not junior screen-by-screen work.
TypeScript by default
Typed props, hooks, API responses, and store slices. No `any` shortcuts. Runtime surprises get caught in CI, not in a customer demo.
Full-stack context
React engineers sit next to Laravel and Node teammates. API contracts are designed with the UI, not thrown over the wall.
AI-enabled, senior-owned
Cursor, Claude, and Codex speed up components and tests. The React engineer still owns the tree, the server-state model, and every merge.
CMS without CMS architecture
Strapi and Sanity when editors need control. The React app stays the product - schemas, preview, and ISR included.
Direct access to the builder
Slack or Teams with the person writing the components. Decisions that should take five minutes take five minutes.
How we build your React product
A repeatable path from NDA to a typed, tested UI in production. Every step is meant to de-risk the next one.
- Discovery & NDA
- Architecture
- Discovery & NDA
- Architecture
- Visual prototype
- Sprint planning
- AI-augmented React
- QA & performance
- Launch
- Growth sprints
Step 01
Discovery & NDA
Sign NDA on day 1. Map users, data density, SEO vs app UX, and the screens that cannot jank.
1 / 8
React products we have shipped
Real platforms. Real users. React in the interface.
Fintech · USA
Notice Ninja
Tax notice operations at enterprise volume - filters, bulk actions, and role-based React views over millions of records.
9M+
Notices processed
EdTech · Australia
MedEntry
UCAT prep with timed exam UI, analytics, and an AI study assistant - React on a Laravel core for medical-school aspirants.
30K+
Students trained
Media
Free Malaysia Today
High-traffic news frontend rebuilt for concurrent readership - Next.js, caching, and SEO that has to work on every article.
50M+
Monthly pageviews
Our Hiring Benefit
Every decision we make is designed to remove friction, move faster, and earn trust before asking for commitment.
AI-Augmented Development
Cursor, Claude, and Codex run in every sprint - not as a marketing claim, but as the actual toolchain your engineers use daily. More output. Same quality bar.
CursorClaudeCodexn8nUX Pilot
Direct Communication
Talk to the engineer building your product - not a project manager relay. Every standup, every demo, every urgent call goes straight to the builder.
Flexible Hiring Models
Full-time, part-time, or hourly - scale the engagement as your needs change. No locked contracts, no minimum seat counts.
Zero Timezone Friction
Real overlap with AU, UK, and US business hours. Not async-only - actual scheduled calls during your workday.
Built for Your Industry
EdTech · Fintech · SaaS · Hospitality · Media · Mystery Shopping. Domain experience that sharpens every architectural decision because we do deep research about your industry before starting a single line of code.
Post-Launch Support
We stay after go-live - bug fixes, OS compatibility updates, App Store compliance monitoring, and maintenance packages on demand.
Bug fixesVersion updatesSecurity patchesApp Store complianceMonitoringFeature updates
ReactJS development FAQs
Straight answers before you start a React build, migration, or design system.
A focused React MVP typically starts around $10,000-$25,000. A production SaaS dashboard with RBAC, complex tables, and a design system is usually $40,000+ depending on integrations. We quote a fixed price after discovery.
A usable UI MVP is often 6-10 weeks. A full product with auth, design system, and Next.js rendering is typically 3-6 months. You see working software every two weeks from sprint one.
Yes. TypeScript is the default - typed props, hooks, API responses, and store slices. `any` is not a shortcut we ship. That is how the team works, not an upsell.
Next.js when SEO, Server Components, or mixed marketing + app routes matter. Vite SPA when the product is authenticated UI with little public content. We choose from the requirements, not from a default stack.
Yes. We use a phased, strangler-fig approach - the current app stays live. Class components to hooks, CRA to Vite, and JavaScript to TypeScript can land in the same program of work.
Yes. Source, design tokens, Storybook, and documentation transfer to you. No retained UI kit, no vendor lock-in.
This page is for Infynno to own a React product - architecture, delivery, QA, and launch. Hire React JS developers when you want an engineer on your team, on your Slack, with a one-week trial. Many clients start with a build and later keep a dedicated React engineer.
Yes. Streaming chat, RAG interfaces, and copilot panels with proper loading and error states - secrets stay on the server. We will not drop an API key into the browser bundle.
Free React discovery call
Ready to build in React?
Tell us about the dashboard, the migration, or the design system. We will map the architecture, the risks, and a realistic first sprint - in one call.
Start building
- 1
1. Book a call
- 2
2. Share the React context
- 3
3. Get an architecture sketch
- 4
4. Start the first sprint
✅ 1-Week Free Trial🔒 NDA on Day 1💡 Full IP Ownership🟦 TypeScript by default⭐ 4.9 Clutch Rating