What We Do
Curatos builds production-grade React applications for companies that need complex, interactive, and scalable frontend solutions. We're not a generalist agency that dabbles in React—we specialize in it. Our engineers have deep expertise in React's ecosystem, from core hooks and state management to advanced patterns like server components, concurrent features, and custom renderers.
We build enterprise dashboards, data visualization platforms, collaborative tools, customer-facing web apps, and complex single-page applications that demand high performance and reliability. If your product lives in the browser and your users expect a native-app experience, we're the team to build it.
Our React applications serve millions of users across fintech, healthcare, logistics, and SaaS—handling real-time data, complex workflows, and demanding performance requirements.
Our Approach
Architecture & Planning
Before writing code, we architect. We analyze your requirements, define component boundaries, plan data flows, and establish patterns that keep the codebase maintainable as it scales. This includes decisions about state management, data fetching, routing, and testing strategy.
We document these decisions in an Architecture Decision Record (ADR) so your team understands the rationale and can maintain consistency as the codebase grows.
Component-Driven Development
We build React applications component by component, starting with a shared component library. Every component is self-contained, thoroughly tested, and documented in Storybook. This approach ensures consistency across the application and dramatically speeds up development of new features.
State Management & Data Layer
We implement state management that matches your app's complexity. Simple apps use React's built-in tools; complex apps get Zustand, Jotai, or Redux Toolkit. For data fetching, we use React Query (TanStack Query) or SWR to handle caching, optimistic updates, and background refetching. Every data pattern is designed for reliability and user experience.
Performance Engineering
React performance is a specialty. We implement code splitting with dynamic imports, memoization where it matters, virtual scrolling for large lists, web workers for heavy computations, and bundle analysis to keep payload sizes minimal. We profile with React DevTools and Chrome Performance tab to identify and eliminate bottlenecks.
Testing & Quality Assurance
Our testing strategy follows the testing pyramid: fast unit tests for business logic with Vitest, component tests with React Testing Library, and end-to-end tests with Playwright for critical user flows. We target 80%+ code coverage on business logic and maintain it through CI enforcement.
DevOps & Deployment
We set up CI/CD pipelines with GitHub Actions, configure environment-based deployments (staging, production), implement feature flags for safe rollouts, and set up error monitoring with Sentry. Your application ships with the infrastructure to support continuous delivery.
What You Get
- Production-grade React application built with TypeScript and modern best practices
- Reusable component library with Storybook documentation
- Responsive, accessible UI following WCAG 2.1 AA standards
- State management architecture tailored to your app's complexity
- Comprehensive test suite with unit, integration, and E2E tests
- Performance optimization with sub-2-second load times
- CI/CD pipeline with automated testing and deployment
- Error monitoring and logging setup with Sentry or equivalent
- Technical documentation covering architecture, patterns, and onboarding
- Code reviews and knowledge transfer to bring your team up to speed
- Post-launch support with SLA-backed maintenance packages
Why Choose Curatos
We're React specialists, not generalists. Our engineers build React applications full-time. We know the ecosystem intimately—the latest hooks, the emerging patterns, the performance pitfalls, and the architectural decisions that separate good React apps from great ones.
We write code your team can maintain. Clean architecture, consistent patterns, comprehensive documentation, and thorough code reviews. We build applications that your team can extend confidently, even after our engagement ends.
We ship, not just prototype. Many React projects stall at the proof-of-concept stage. We engineer for production—handling edge cases, error states, loading states, accessibility, and the thousand details that separate a demo from a product.
We measure performance obsessively. Every React app we build is profiled, optimized, and benchmarked. We track bundle sizes, render performance, memory usage, and Core Web Vitals. If something is slow, we find the root cause and fix it.
We integrate seamlessly with your team. Whether we're building the entire application or augmenting your existing team, we adapt to your processes—your standup cadence, your code review standards, your deployment schedule. We're a partner, not a black box.
Who It's For
Our React development services are built for:
- SaaS companies building complex, data-rich web applications
- Fintech platforms requiring real-time dashboards, charts, and transaction interfaces
- Healthcare companies developing patient portals, clinical tools, or telehealth applications
- Enterprise teams modernizing legacy applications with modern React architecture
- Startups building their core product on React and needing expert engineering from day one
- Internal tool builders creating admin panels, operational dashboards, or workflow applications
If your product demands a complex, interactive frontend—and you need a team that can build it to production standards—Curatos is ready.