REACT · TYPESCRIPT · VITE · TANSTACK

High-performance React development

We work with React 19, strict TypeScript, well-designed hooks and a stack chosen for each product.

Request a quote See use cases

STACK

React 19

TypeScript

ViteTanStack QueryTanStack RouterZustandshadcn/uiVitest

Components

Tree with hooks

Render OK

JSXApp.tsx
useAuth()
JSXDashboard.tsx
useQuery()
JSXMetricsCard.tsx
useMemo()

Web Vitals

Lighthouse 98

LCP

1.4s

CLS

0.02

INP

92ms

TBT

120ms

Bundle

vite build

vendor.js48 kB
app.js22 kB
route.dashboard.js14 kB

WORKFLOW

Design, engineering and optimization in one React team

A single squad covering component architecture, bundle tuning and production observability.

01 / 03

Design

Component inventory and design-system tokens
Wireframes and prototypes validated with stakeholders
UX decisions tracked in actionable tickets
WCAG 2.2 accessibility baked in from the first mockup

02 / 03

Development

Feature-based architecture with hooks and composition
Strict TypeScript, ESLint and Prettier aligned with the team
Small pull requests with technical review and cross QA
CI pipeline with type checks, tests and bundle budget

03 / 03

Optimization

Route-level code splitting and usage-driven prefetch
Suspense, streaming and modeled loading states
TanStack Query with tailored cache and revalidation
Web Vitals monitored in production

USE CASES

Where React fits in your product

Four scenarios where React brings the right balance between flexibility, ecosystem and sustained performance.

SaaS dashboards

MULTI-TENANT PRODUCT

Rich web apps with auth, roles, real-time panels and complex data models. React Query handles server cache and components are reused across tenants.

Ideal when the customer lives inside the app for hours a day

Design systems

COMPONENT LIBRARY

Versioned design systems with Storybook, visual tests and living documentation. Accessible components built on Radix or headless primitives, ready to consume across every product in the group.

Fits when several products share brand and patterns

Internal tools

ADMIN & BACKOFFICE

Operations panels, BPM and internal CRMs where productivity outweighs SEO. Complex forms, tables with thousands of rows, granular permissions and built-in audit trail.

Replaces spreadsheets and manual processes with traceability

Incremental adoption

EMBED IN EXISTING APP

React modules that live alongside a legacy monolith or other frameworks. Mounted on specific entry points to modernize critical areas while the rest of the app stays intact.

Works when there is an existing base and short delivery cycles

SUCCESS STORIES

Companies that trust our team

Teams that trusted us to build React products: SaaS dashboards, internal panels and customer-facing apps on maintainable architecture.

Holabrief

Boluda

Casualarena

Tencer

STANDARDS

How we write React that survives years of iteration

Engineering rules we apply on every project so the code stays readable, predictable and fast as the team grows.

TypeScript in strict mode with types shared between client and API
Custom hooks with explicit dependencies and single responsibilities
useEffect reserved for syncing with external systems
Server state in TanStack Query and local state close to the component
Suspense boundaries and skeletons modeled per route
Route-level code splitting with prefetch driven by real navigation
React Server Components and RSC-aware patterns when the stack allows
Vitest, Testing Library and MSW for tests close to the user
Bundle budget enforced in CI with per-chunk analysis

FAQ

Common technical decisions on React projects

Concrete answers to the questions that come up when planning a React project.

Is React 19 production-ready?
React 19 has been running real production projects since its stable release. We use its new APIs (Actions, useOptimistic, use, improved form hooks) when the client stack supports them and stay on React 18 when there are compatibility constraints with specific libraries.
What state stack do you use by default?
Server state in TanStack Query and local state in hooks or Zustand depending on complexity. Redux Toolkit comes in when there are complex shared UI flows or time-travel debugging requirements. Every decision is documented in the project ADR.
React or Next.js for my product?
React with Vite fits authenticated dashboard apps, internal tools and component libraries. Next.js comes in when SEO, SSR or edge rendering are business requirements. The decision is made per page based on the metrics to optimize.
How do you handle performance in large apps?
Route-level code splitting, usage-driven prefetch, virtualization for long lists, selective memoization with React Compiler when applicable and bundle budgets enforced in CI. Core Web Vitals are monitored in production to catch regressions.
Do you build custom or headless design systems?
We build design systems from scratch or on top of headless primitives like Radix UI and shadcn/ui. Storybook documents each component, visual tests with Playwright or Chromatic catch regressions and semantic versioning keeps compatibility across products.
Can you migrate a legacy app to React incrementally?
Yes. We mount React in specific zones of the existing app using a micro-frontend or islands pattern. Interop with the monolith is solved through events, API contracts and a module-by-module migration calendar.