stories/build_01.stories.tsx
Custom React Web Apps
Greenfield React 19 builds with Suspense, Server Components, and Next.js 15 app router. SaaS products, healthcare portals, FinTech consoles.
Ship: 4 to 6 mo
React 19 · Next.js 15 · React Native · TanStack
React Development Services for component-driven products
Senior React engineers shipping hooks, Suspense, Server Components, and Next.js 15 for SaaS dashboards, headless commerce, and design systems. 10+ years in production, React 16 to 19, React Native mobile, full component library work.
- 250+
- React builds shipped
- 10+ yrs
- Shipping React since 2014
- 95%
- Client retention past 12 mo
- 4.9/5
- From 2,495 reviews
Components /Button
Get started
<Button variant="primary" />Props
variantstring
"primary"
sizestring
"md"
loadingboolean
false
iconReactNode
<ChevronRight />
import { Button } from '@dz/ui';
export function Hero() {
return <Button variant="primary" />
}
// Sample component from a recent React 19 design-system project
React code shipped to production for these clients
Quick answer · Cost of React development in 2026
React development costs in 2026 typically range from $25,000 for a small React SPA with one backend integration, up to $180,000 for a design system plus two product apps. SaaS dashboards with auth, payments, and real-time features run $60,000 to $120,000. Dedicated React engineer rates start at $25 per hour or $2,800 per month for a senior. Decipher Zone replies to your brief within 1 business day and sends a fixed-price proposal in 5 business days.
- Small React SPA
- from $25,000
- 1 backend, 1-2 surfaces
- SaaS dashboard
- $60K to $120K
- Auth, payments, real-time
- Design system + apps
- $80K to $180K
- Storybook + 2 product apps
- Dedicated engineer
- from $2,800/mo
- Senior, monthly rolling
/ Stories · What we build
Six categories of React work, shipped to production
From greenfield React 19 builds to React Native mobile and headless commerce. Same senior team, same engineering discipline, same code review bar.
- stories/build_02.stories.tsx
SaaS Dashboards
Multi-tenant dashboards with role-based access, real-time updates via WebSockets, data viz with Recharts or D3, and TanStack Query for server state.
Tenants: 10 to 10K+ - stories/build_03.stories.tsx
Design Systems and Component Libraries
Storybook-driven component libraries with strict TypeScript, accessibility primitives (Radix or React Aria), token-based theming, and visual regression tests.
Storybook + Chromatic - stories/build_04.stories.tsx
React Native Mobile
Cross-platform iOS and Android from one React Native codebase. Expo or bare workflow, native modules when needed, App Store and Play Store release pipelines.
iOS + Android - stories/build_05.stories.tsx
Next.js SSR and SSG
Server-side rendering, static generation, ISR, and edge runtime. Built for SEO, link previews, and sub-second LCP on commerce and content sites.
Edge runtime ready - stories/build_06.stories.tsx
Headless eCommerce
React frontends on Shopify Storefront API, BigCommerce, Medusa, or commercetools. Custom checkout, A/B-tested product pages, sub-1s navigation.
PLA ready
/ Addon registry · Hooks + features
Modern React features we ship in production
Eight React capabilities our senior engineers wire up, ship, and maintain. Versions are what we use on greenfield projects today.
Hook · Primitive
Capability
Version
Description
Status
- Hook
useState + useReducer
Local + complex state
v19.0
Component-level reactive state. We pick useReducer when state transitions get gnarly or when the same state is consumed in multiple components.
Stable - Hook
useEffect + useLayoutEffect
Side effects
v19.0
Data fetching, subscriptions, integrations. Modern alternative: TanStack Query for server state, signals patterns for sync.
Stable - Hook
Suspense + use()
Async rendering
v19.0
Suspense for data fetching and code splitting. The new use() hook for promises and context. Streaming SSR works out of the box.
Stable - Hook
Server Components
RSC with Next.js 15
v19.0
React Server Components for zero-JS pages where possible. Smaller bundles, faster TTFB, better SEO. Async components by default.
RSC - Hook
useContext + Context
Cross-component state
v19.0
Theme, auth, locale, feature flags. We avoid Context for high-frequency state (use Zustand or Jotai instead to avoid re-renders).
Stable - Hook
TanStack Query + Zustand
Server + client state
v5.0
TanStack Query for server cache and mutations. Zustand for client UI state. Redux Toolkit when the team already speaks Redux.
Stable - Hook
React Hook Form + Zod
Forms + validation
v7.0
Performant uncontrolled forms with schema-based validation. Zod schemas double as TypeScript types and runtime guards.
Stable - Hook
React Aria + Radix UI
Accessible primitives
v3.x
Headless accessible primitives so our components pass WCAG 2.1 AA on first audit. Keyboard, screen reader, focus management included.
Ready
8 of 8 primitives · All current as of React 19
Discuss your stack/ Git log · Delivery pipeline
Six commits from brief to production React build
Predictable, documented, audit-friendly. Procurement can scope it. Engineering can verify it.
- commit_01a3f8c91Day 0 to 1
Brief review by senior React engineer
Send a short brief. A senior React engineer reads it within one business day. No sales filter, no junior gatekeeping.
- commit_02b8d4e02Day 2 to 5
Free component audit and proposal
Free component audit covering React version, state strategy, SSR vs CSR, design system. Written proposal in 5 business days with milestones and rate band.
- commit_03c1e6f73Day 6 to 10
Contract, NDA, repo provisioning
Mutual NDA before code. SOW signed. Your GitHub repo provisioned with you as owner. Kickoff scheduled in your working hours.
- commit_04d2a7b14Sprint 0
Vite or Next.js scaffold + CI/CD
React project scaffolded with strict TypeScript, ESLint, Prettier, Storybook, Vitest, Playwright. Visual regression with Chromatic. CI/CD running on day one.
- commit_05e9b3c25Every sprint
Two-week sprints, weekly demos
Two-week sprints with public board. Weekly demos in your time zone. Code review on every PR. Lighthouse, bundle-size, and a11y checks on every build.
- commit_06f5d8e36Post-launch
Production support and maintenance
Optional support retainer. Same team. Same SLA. 95 percent of clients extend past 12 months. Storybook handover documentation included.
7-day no-risk trial on dedicated engagements
On dedicated React engineer engagements, the first week is on us. If the fit is wrong, walk away with no fees, no notice period, no awkward exit clause.
/ Engagement models · USD published
Four ways to hire React development from Decipher Zone
Transparent USD pricing. Rolling monthly cancel on dedicated. No setup fees, no markup, no surprises.
Hourly
Pay only for hours used
$25/hour
Tracked weekly, billed monthly
- Code reviews and audits
- React performance tuning
- Short surge work
- No minimum commitment
- Mutual NDA before brief
Most popular Dedicated
Senior React engineer, full-time on your product
$2,800/month
Monthly rolling, cancel anytime
- One engineer, only you
- Embedded in your sprint
- Reports to your stakeholders
- 7-day no-risk trial
- 48-hour replacement guarantee
Staff Aug
Plug into your existing React team
$2,500/month
Per-engineer monthly
- Joins your standups
- Your sprint, your tools
- Your codebase, your repo
- Scale up or down monthly
- 48-hour replacement
Fixed Scope
Locked deliverables and timeline
$25,000+ project
Per-milestone payments
- Best for MVPs and SPAs
- Locked scope upfront
- Locked timeline
- Demo-based acceptance
- No surprise change orders
USD rate bands are indicative starting points. Final pricing depends on React version, seniority, and engagement length.
/ Production work
React code shipped for named clients
Four recent React engagements across SaaS aerospace, secure communications, B2B commerce, and FinTech trading. Real production, real metrics.
- LIVE
Lean Space
SaaS · Aerospace mission control
React 18 + TypeScript front-end for cloud-native satellite operations and mission control. Real-time telemetry, mission planning, and ground-station integration.
- Components
- 180+
- in Storybook
- LCP
- 1.1 s
- p75 mobile
- Test coverage
- 78%
- lines + branches
- LIVE
Symphony
Secure communications SaaS
React front-end for messaging, voice, video, and analytics modules used by global financial institutions with strict compliance requirements.
- Bundle
- 142 KB
- initial chunk
- Test coverage
- 82%
- lines + branches
- Release cycle
- weekly
- to production
- LIVE
Marra Forni
B2B eCommerce · Wood-fired ovens
React storefront with custom dealer pricing, configurator for oven specs, and integrated CMS. Headless commerce on Laravel back-end.
- LCP
- 1.3 s
- from 4.2 s
- Conv. uplift
- +22%
- post launch
- Dealer portals
- 12
- active
- LIVE
Focused Trading
FinTech · Trading platform
React + Node platform for prop trading firms. Real-time charts with TradingView, risk dashboards, payout automation, multi-tenant.
- WebSocket
- <50ms
- tick latency
- Uptime
- 99.95%
- 12 mo rolling
- Tenants
- 8+
- live programmes
/ Docs · Frequently asked
React questions engineering leaders actually ask
Rate bands, version recommendations, state strategy, performance, and the awkward procurement questions, answered up front.
DZ / React FAQ
7 questions · Answered by senior React team
Small React SPAs with one backend integration start around $25,000. SaaS dashboards with auth, payments, and real-time features run $60,000 to $120,000. Design system plus two product apps lands $80,000 to $180,000. Dedicated React engineer rates start at $25 per hour or $2,800 per month for a senior. We send fixed-price proposals within 5 business days of your written brief.
Free component audit · Reply in 1 business day
Ship React code that scales
past launch.
Send a short brief. A senior React engineer reads it personally and replies within one business day. Free component audit, written proposal in 5 business days, no sales call, no pitch deck.
- Proposal in 5 business days, no pitch decks
- 7-day no-risk trial on dedicated engineers
- Mutual NDA + IP transfer before any code
- Source code in your repo from day one
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