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React 18 Β· Next.js 14

βš› React & Next.js
The Modern Web Standard.

We are a React-first agency. Every senior engineer knows the React ecosystem inside out β€” from RSC and App Router to advanced state management and Core Web Vitals optimisation.

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// React & Next.js at Nexcode
// React & Next.js expertise
version: "React 18 Β· Next.js 14"
projects: 80+
rating: 4.9β˜…
delivery: "on-time & on-budget"
80+
React/Next.js Projects
4.9β˜…
Avg Client Rating
Lighthouse 95+
Avg Score
3 yrs
Next.js App Router Experts
80+
React/Next.js Projects
4.9β˜…
Avg Client Rating
Lighthouse 95+
Avg Score
3 yrs
Next.js App Router Experts
Use Cases

What we build with React & Next.js

Production applications we ship using React & Next.js every day.

🏒
Enterprise SaaS Dashboards

Complex admin interfaces, data tables, real-time updates β€” built with React Query and optimistic UI.

πŸ›’
eCommerce Storefronts

Headless storefronts with Next.js App Router, ISR, and sub-1s Core Web Vitals.

πŸ€–
AI-Powered Apps

LLM chat interfaces, streaming responses, RAG frontends β€” built on Next.js.

πŸ“Š
Analytics Dashboards

Data-heavy dashboards with Recharts, D3, and WebSocket real-time updates.

🌐
Marketing Sites

Content-heavy sites with CMS integration, ISR, and perfect Lighthouse scores.

πŸ“±
PWA & Offline Apps

Progressive web apps with service workers, offline capability, and app-like UX.

Expertise Breakdown

Our React & Next.js capabilities

βš›
React Architecture

Deep Component Design

βœ“ Scalable component hierarchies, render optimisation, and compound pattern design.
⚑
Next.js App Router

SSR/SSG/ISR/PPR

βœ“ Every Next.js rendering strategy β€” choosing the right one per page for maximum performance..
🎯
State Management

Modern State Patterns

βœ“ Context, Zustand, Jotai, Redux β€” matched to project complexity, not habit.
⚑
Performance

Core Web Vitals

βœ“ LCP under 2.5s, INP under 200ms, CLS under 0.1 β€” in production, not just in CI.
πŸ§ͺ
Testing

Full Coverage

βœ“ Unit, integration, E2E β€” TDD where it counts, pragmatic where it doesn't.
🎨
UI Frameworks

Design System Expertise

βœ“ Tailwind, shadcn/ui, Radix β€” accessible, themeable component systems.
Development Process

How we deliver React & Next.js projects

01
πŸ“‹

Requirements & Architecture

02
🎨

Design System Setup

03
πŸ—

App Router Setup

04
βš™

Feature Development

05
⚑

Performance Optimisation

06
πŸ§ͺ

Testing & QA

07
πŸš€

Deploy & Monitor

Ecosystem

The full React & Next.js ecosystem we use

Core Libraries
β†’ React 18
β†’ Next.js 14
β†’ TypeScript
β†’ React Query
Styling
β†’ Tailwind CSS
β†’ shadcn/ui
β†’ Radix UI
β†’ Framer Motion
State
β†’ Zustand
β†’ Jotai
β†’ Redux Toolkit
β†’ Context API
Testing
β†’ Jest/Vitest
β†’ Playwright
β†’ Testing Library
β†’ Storybook
Data
β†’ tRPC
β†’ Apollo GraphQL
β†’ SWR
β†’ Prisma Client
DevOps
β†’ Vercel
β†’ GitHub Actions
β†’ Sentry
β†’ Datadog RUM
When to choose

React & Next.js vs alternatives

An honest comparison to help you choose the right technology.

FeatureReact & Next.jsRVAR
Learning CurveLow–MediumLowHighMedium
Bundle SizeSmallSmallLargeSmall
SSR/SSGExcellent (Next.js)Good (Nuxt)GoodExcellent
EcosystemLargestLargeLarge (enterprise)Growing
TypeScriptFirst-classFirst-classFirst-classFirst-class
Best ForUniversalEuropean marketEnterprise AngularFull-stack DX
FAQ

React & Next.js
questions

Common React & Next.js questions before you decide.

Start a Project β†’
What React version do you use?+
We default to React 18 with concurrent features enabled. New projects use the Next.js App Router with React Server Components. We still support React 17 for legacy codebases but recommend upgrading.
Next.js App Router vs Pages Router β€” which do you recommend?+
App Router for new projects β€” Server Components, streaming, and the layouts system are production-ready and significantly better for performance. Pages Router for existing projects where migration cost isn't justified yet.
How do you handle large datasets in React?+
Virtualised lists (TanStack Virtual), pagination or cursor-based infinite scroll, React Query for server-state caching, and optimistic updates. We've built tables with 100K+ rows that render smoothly.
What's your approach to React performance?+
Profile first, optimise second. We use React DevTools Profiler, Chrome Performance tab, and Lighthouse CI. Common wins: memo/useMemo where actually needed, code splitting, image optimisation, and font subsetting.
Related Tech

Often used with React & Next.js

🟒
Node.js

Backend API paired with React frontends.

Explore β†’
🎨
UI/UX design

Design systems for React projects.

Explore β†’
πŸ“±
React Native

mobile app from the same codebase.

Explore β†’
☁
AWS

Cloud infrastructure for Next.js.

Explore β†’

Ready to build with React & Next.js?

Senior React & Next.js engineers Β· Fixed-price quotes Β· Free discovery call Β· 24hr proposal.

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