Do you build React without Next.js?

Yes. Next.js is the usual host for sites and SEO-heavy apps. Internal tools, widget embeds, and some dApp shells run as Vite or a custom React app when routing and rendering needs are simpler.

How do you structure React state?

Component state and URL state first. A small store or server cache when several screens share the same data. We avoid a global store for everything, because it makes later changes harder to reason about.

Can you adopt an existing React codebase?

Yes. We start with the riskiest flows, add types and component boundaries, and replace ad-hoc UI with a design system in slices so the product keeps shipping.

How does React relate to React Native here?

Web React and React Native share language and some patterns, but not components. When both exist, we share types, API clients, and design tokens — and keep the UI layers separate.

Do you ship Storybook?

For design systems and shared kits, yes. Stories document variants, empty states, and accessibility notes so the next team can extend without guessing.

How do you handle forms and validation?

Schemas live once — typically Zod — and drive both UI feedback and API validation so the client and server agree on shapes.

Do you support design tokens from Figma?

Yes. We map color, type, and space tokens into the React kit so product squads and designers share one language. Variants are documented in Storybook or equivalent.

How do you keep React apps maintainable?

One component kit, deliberate state placement, typed props, and contribution rules so teams do not invent a second unofficial UI system.

React · interfaces

React

React, kept deliberate.

Zupitrix builds React interfaces for websites, web apps, and Web3 products. Components follow a design system, state stays close to the feature that owns it, and accessibility is part of the component — not a later audit.

Start Project See interface patterns

React

TypeScript

Next.js

Vite

Radix UI

Button.tsxReact 19

import { useState } from 'react'

type Props = {
  label: string
  onPress?: () => void
}

export function Button({ label, onPress }: Props) {
  const [busy, setBusy] = useState(false)

  return (
    <button
      disabled={busy}
      onClick={() => {
        setBusy(true)
        onPress?.()
      }}
    >
      {busy ? 'Working…' : label}
    </button>
  )
}

UI kitShared component language

a11yKeyboard and semantics

StateLocal until it must lift

WebNext.js or Vite hosts

Interface patterns

Product shapes we build toward

Illustrative surfaces — not real brands or clients — showing the kind of React interfaces we ship.

Harbor Stay

Search, booking, and host tools at marketplace scale

Marketplace

Pulse Room

Realtime chat UI with presence and keyboard shortcuts

Realtime

Shelf Stream

Personalized browsing shelves and playback surfaces

Media

Vault Drive

File workflows, sharing, and sync states in the browser

Productivity

Launch Pad

Product marketing plus dashboards in one React shell

Platform

Kanban North

Keyboard-first issue tracking with snappy transitions

SaaS

Code we write

Hooks and controls, not copy-paste screens

Small, typed pieces your team can extend — data hooks, URL-backed inputs, and accessible primitives.

useProjects.tshooks

export function useProjects() {
  const [data, setData] = useState<Project[]>([])

  useEffect(() => {
    let alive = true
    fetch('/api/projects')
      .then((r) => r.json())
      .then((rows) => {
        if (alive) setData(rows)
      })
    return () => { alive = false }
  }, [])

  return data
}

SearchField.tsxUI

export function SearchField() {
  const [q, setQ] = useSearchParams()
  const value = q.get('q') ?? ''

  return (
    <input
      value={value}
      aria-label="Search projects"
      onChange={(e) => setQ('q', e.target.value)}
    />
  )
}

Surfaces we shape

UI screens people already know

Familiar product patterns — queues, chat, libraries, boards — composed from a shared React kit instead of one-off screens.

Incident queue

Priorities, assignees, and status chips on one calm table.

Ops console

Team chat

Threads, presence dots, and a compose bar that stays keyboard-first.

Realtime

Media library

Shelves, filters, and a preview pane before publish.

Content

File workspace

Folders, share dialogs, and clear upload / sync states.

Drive

Metrics board

KPI tiles, a date range, and charts you can drill into.

Analytics

Project board

Columns, filters in the URL, and quick-create cards.

Workflow

Practice

Composable by design

Four rules we keep visible in every React engagement — so the kit stays coherent as screens multiply.

A component contract

Props, variants, and empty states stay explicit — screens compose the kit instead of copying markup.

propsvariantsempty

Accessibility in the primitive

Buttons, dialogs, and forms ship with keyboard behavior and labels — semantics are not bolted on later.

focusariakeyboard

State that matches the feature

Shareable filters live in the URL, server data at the query layer, UI-only state inside the component.

URLquerylocal

Design-system fit

Color, type, and spacing tokens come from design — new screens reuse the kit before inventing one-offs.

tokenstypespace

Build

What we ship in React

Product UI

Dashboards, onboarding, and ops tools with consistent tables, forms, and feedback patterns.

Design systems

Documented React components that design and engineering both reference day to day.

Web3 product shells

React frontends for wallets, indexing, and multi-chain flows when the product is a dApp.

Flow

A calm path to UI

01
Inventory
List screens and the components they actually share.
02
Kit
Build primitives and the few complex components the product repeats.
03
Flows
Implement journeys with loading, empty, and error states.
04
Stories
Storybook or in-app examples so the next team can extend the kit.
05
Harden
Budgets, failure modes, observability, and rollback before traffic.
06
Handoff
Runbooks, access, and training so the client team can operate without us.

Outcomes

What we optimize for

Product and engineering goals we keep visible from the first slice through handoff — so velocity never quietly trades away quality.

a11yKeyboard-first primitives

UI kitShared component language

TypedProps end to end

ReuseWeb + design tokens

StoriesDocumented variants

TestsBehavior coverage

At a glance

Delivery facts

Typical timelines, coverage, and operating constraints we set expectations against before the build surface expands.

Topic	Value	Note
Kit bootstrap	2–3 weeks	Tokens + core primitives. Tracked against React delivery milestones.
Duplicate UI debt	Cut early	Inventory first. Tracked against React delivery milestones.
Story coverage	Core 100%	Then patterns. Tracked against React delivery milestones.
Form validation	Schema-first	Shared with API. Tracked against React delivery milestones.
List strategy	Virtualize late	When measured. Tracked against React delivery milestones.
Host	Next or Vite	Product-dependent. Tracked against React delivery milestones.

Ecosystem

Technologies that sit beside it

Real stack partners we wire into delivery with clear roles — not decorative logos on a slide.

React

Declarative UI with hooks, concurrent features, and a clear component boundary.

TypeScript

Typed props, state machines, and shared models across the tree.

Next.js

Routing, SSR/SSG, and deployment shell for React apps.

Vite

Fast local builds for client-heavy React apps.

Redux

Cross-screen state when URL and server cache are not enough.

React Query

Remote data cache, mutations, and stale-while-revalidate UX.

Storybook

Documented component states for design and eng.

Testing Library

Behavior-focused tests that survive markup churn.

Tailwind CSS

Consistent spacing, color, and responsive utilities.

Radix UI

Focus, keyboard, and ARIA-correct building blocks.

Framer

Purposeful transitions that clarify hierarchy.

Zod

Shared validation between UI and API boundaries.

Integrations

Systems we commonly connect

CMS, identity, commerce, analytics, and edge services joined with typed contracts, webhooks, and ownership — not ad-hoc glue.

GraphQL

Typed GraphQL or REST clients for product screens.

Stripe

Payment elements and confirmation states.

Auth0

Hosted or embedded auth UX.

Sentry

Browser error capture with release tags.

Segment

Funnel and feature usage events.

Contentful

CMS-driven sections inside React layouts.

Architecture

Layers we design explicitly

Boundaries, ops knobs, and rollback policy for each layer — so one team can change without rewriting everything.

Primitives

Accessible base components with tokens.

Button
Dialog
Input

Patterns

Composed flows: tables, wizards, empty states.

Data table
Wizard
Toast

Feature modules

Screens own local state; share via URL or query cache.

Routes
Hooks
API

Design tokens

Color, type, space as the single styling contract.

CSS vars
Themes
Density

Quality gates

Lint, unit, a11y checks on PRs.

ESLint
Vitest
axe

Capabilities

What we actually deliver

Concrete workstreams with owners, acceptance checks, and a path for your engineers to extend after handoff.

Composable primitives

Buttons, dialogs, and menus built once with keyboard and screen-reader behavior.

State that matches the feature

URL, local, and shared stores chosen deliberately — not one global dump.

Performance profiling

Memo boundaries only where measured; list virtualization when lists grow.

Accessibility in the kit

Focus, labels, and roles ship with the primitive — not a late audit.

Typed contracts

Props and API clients share TypeScript models so refactors fail in CI.

Story-driven delivery

Storybook or in-app examples so the next team can extend safely.

Form systems

Schema-driven validation with consistent error and disabled states.

Data fetching UX

Loading, empty, and error patterns standardized across screens.

Motion with purpose

Transitions that clarify hierarchy — not decorative noise.

Patterns

Approaches we reach for

Reference implementations and conventions in the repo — so reviews reject one-off variants that bypass the agreed shape.

Compound components

Flexible APIs without prop explosion.

Reference implementation of “Compound components” lives in the repo, not only slides.

Controlled + uncontrolled

Forms that fit both design kits and app screens.

Reference implementation of “Controlled + uncontrolled” lives in the repo, not only slides.

Render props / slots sparingly

Prefer composition that stays readable.

Reference implementation of “Render props / slots sparingly” lives in the repo, not only slides.

Server state vs UI state

React Query (or similar) for remote; local for ephemeral.

Reference implementation of “Server state vs UI state” lives in the repo, not only slides.

Error boundaries by feature

Contain failures without blanking the shell.

Reference implementation of “Error boundaries by feature” lives in the repo, not only slides.

Lazy routes

Code-split heavy dashboards behind navigation.

Reference implementation of “Lazy routes” lives in the repo, not only slides.

Industries

Domains we apply this in

Same technical playbook, different module depth — regulation, uptime, and partner APIs baked in early.