Senior UI Frontend Development AgencyAgency
We build pixel-perfect, performant UIs with React, Next.js, and TypeScript. 200+ successful products shipped on time and on budget.
IRPR is a senior UI frontend development agency that builds production-ready interfaces using React, Next.js, Vue, and TypeScript. Our engineers ship component libraries, design systems, and interactive dashboards that handle millions of users.
Every project starts at $80K and delivers in 8-12 weeks. We handle responsive design, WCAG 2.1 accessibility, performance optimization, and CI/CD integration. Clients own 100% of the source code and design assets.
We work with CTOs at Series A startups who need a scalable UI to support growth, product managers at SaaS companies launching a new feature, and design teams that need engineering partners to implement pixel-perfect designs.
Types of software we ship.
Single-Page Application (SPA)
Fast interactive apps built with React or Vue. Client-side routing and API integration for real-time data flow.
Design System & Component Library
Reusable React or Vue components documented in Storybook. Consistent UI across products with version-controlled tokens.
Interactive Data Dashboard
Rich dashboards with D3, Chart.js, and custom widgets. Real-time data via WebSockets and server-sent events.
Ecommerce Storefront UI
High-converting product pages, cart flows, and checkout built with Next.js and Stripe integration.
Mobile-First Progressive Web App
Offline-capable PWAs using Service Workers and Workbox. Lighthouse scores above 90 on mobile.
Real-Time Collaboration Interface
Co-editing, chat, and live updates using WebSocket, Socket.io, and CRDTs. Built for low latency.
Landing Page with Animations
Animated landing pages using Framer Motion and GSAP. Optimized for Core Web Vitals and conversion.
Admin Panel & Back Office UI
Complex admin interfaces with tables, forms, and charting. Material-UI or Ant Design with role-based access.
We build for every business type.
Fintech
Healthcare
Ecommerce
SaaS
Media & Entertainment
Why a Senior UI Frontend Development Agency
Our track record speaks for itself.
IRPR has shipped 200+ frontend products across 50 countries. Every project is handled by engineers with 10+ years of experience in React, Next.js, and TypeScript.
We focus on performance, accessibility, and maintainability. Our average project scores above 90 on Lighthouse and passes WCAG 2.1 AA standards.
Senior Engineers vs. Developer Shops
The difference is in the details.
Many agencies staff juniors to cut costs. You end up with slow delivery, broken builds, and code you cannot maintain.
IRPR assigns senior engineers from day one. We write testable components, enforce code standards, and deliver a production-grade UI in 8-12 weeks.
- Uses off-the-shelf components with no customization
- No unit or E2E tests written
- Hourly billing with no fixed scope
- Slow email-based communication
- No design system integration
- Unclear code ownership terms
- Custom component architecture built for your design tokens
- Jest + Cypress test suite covering all key flows
- Fixed price after a 2-week Roadmap phase
- Daily async standups via Slack with weekly video reviews
- Storybook component library with live documentation
- Full IP and source code ownership after delivery
Our Frontend Development Process
We follow a structured 4-phase approach to deliver predictable results.
Every project starts with a Roadmap phase where we define scope, architecture, and a fixed price. No ambiguity, no surprises.
From there we design a component tree, build in weekly sprints, and deploy to a staging environment for feedback. After final QA, we hand over the fully documented codebase.
What Ships with Every Project
Every delivery includes a complete, production-ready frontend.
You get everything needed to launch and maintain your user interface. No hidden handoffs, no missing pieces.
- Full source code with Git commit history
- Storybook component library with documentation
- Figma design file with component annotations
- Responsive layouts for mobile, tablet, and desktop
- Lighthouse performance report (target 90+)
- WCAG 2.1 AA accessibility audit results
- CI/CD pipeline using GitHub Actions
- Sentry error tracking integration
- Jest unit tests and Cypress E2E tests
- Deployment guide and architecture diagram
What we ship in this practice.
SaaS Analytics Dashboard
Built a real-time analytics dashboard for a fintech startup using React, D3, and WebSockets. Reduced page load time by 40% and enabled 10,000 concurrent users. Tech stack: Next.js, Redux, Recharts, AWS CloudFront.
Telemedicine Patient Portal
Designed and developed a HIPAA-compliant patient portal for a healthcare provider. The React-based interface increased appointment bookings by 35% and reduced manual data entry by 8 hours per week. Tech stack: React, Tailwind CSS, Twilio Video, FHIR API.
Ecommerce Checkout Flow
Engineered a streamlined checkout flow for a high-volume retail brand using Next.js and Stripe. Conversion rate improved by 15% and cart abandonment dropped by 22%. Tech stack: Next.js, Stripe Elements, Zustand, Segment.
Real-Time Collaboration Tool
Built a collaborative document editor for a media company using CRDTs and WebSockets. Sync latency dropped to under 200 ms, enabling 50+ simultaneous editors. Tech stack: React, Yjs, Socket.io, MongoDB.
CRM Interface for Real Estate
Created a custom CRM frontend for a real estate firm with drag-and-drop pipelines, property map views, and email integration. Sales reps saved 10 hours per week on data entry. Tech stack: Vue 3, Mapbox, Elasticsearch, SendGrid.
Learning Management System UI
Developed a feature-rich LMS interface for an edtech company using Vue and Socket.io. Course completion rates rose by 20% and student engagement time increased by 30%. Tech stack: Vue 3, Vite, Pinia, AWS S3.
Why teams hire us.
Fixed price, not hourly
Every project gets a fixed quote after the 2-week Roadmap phase. No hourly billing, no surprise invoices, no scope creep charges.
Senior-only engineers
Our team averages 12 years of experience. We never staff junior developers on client projects. Every line of code is reviewed by a principal engineer.
Design system specialists
We build reusable component libraries in Storybook with full documentation. Clients reuse these components across products, cutting future development time by 30%.
Accessibility-first approach
Every interface passes WCAG 2.1 AA standards. We use axe DevTools for automated checks and manual keyboard testing. Screen reader support is built in from the start.
Performance obsessed
We target Lighthouse scores above 90. Server-side rendering with Next.js cuts initial load times by 50%. Bundle sizes are optimized using code splitting and lazy loading.
Full code ownership
You get the repository, documentation, CI/CD pipeline, and all design assets. There is no lock-in, no recurring license fees. You can take the code to any team.
Idea → Roadmap → Product → Release.
Every engagement runs through the same four-stage pipeline. Predictable by design.
Questions clients ask first.
Related services and industries.
Ready to build? Let's talk.
30-minute discovery call. No deck. We'll tell you honestly what it takes, how long, and how much.