React Development Company

React Developers Who Have Shipped for 9 Years on a Single Product

Most agencies staff React developers from a bench. You get whoever is available. Their React experience is “I did a few projects.” They leave after six months.

Our React developers built HeyTutor’s marketplace frontend and maintained it for 9 years. They built Nautical Commerce’s operator dashboard for a platform processing 200K+ monthly transactions. They shipped React Native mobile apps for a sports operations platform used by 100% of NFL teams.

EltexSoft is a React development company. 35-50 senior engineers. Headquartered in Lisbon, Portugal. Engineering team in Ukraine. Founded in 2015. When you hire React developers from us, you get engineers who have worked together for years, ship to production daily, and stay on your project because that is how we work.

What We Build With React

Marketplace Frontends

The frontend that makes a marketplace work is harder than the backend. Search with real-time filtering across hundreds of data points. Matching interfaces where users compare options side by side. Booking flows with calendar integration and timezone handling. Real-time messaging between two sides of a marketplace. Payment UIs that handle Stripe Connect multi-party splits.

HeyTutor’s marketplace frontend serves 10,000+ tutors and 10,000+ students with a matching algorithm that considers 100+ metrics. The frontend makes that algorithm usable: search by subject, location, availability, price, ratings. Filter. Compare. Book. Pay. Message. All in React.

Nautical Commerce’s marketplace operator dashboard gives marketplace operators visibility into vendor catalogs, order routing, commission structures, and multi-party payment flows. React frontend, Django backend, 200K+ monthly transactions.

SaaS Dashboards and Admin Panels

Data-heavy interfaces are where React earns its complexity budget. Charts, tables with sorting and pagination, real-time updates via WebSocket, role-based views where admins see different data than operators, export to CSV and PDF, and filter combinations that produce thousands of possible data views.

We build these with React Query for server state, Recharts or D3 for visualization, AG Grid or TanStack Table for complex data tables, and Tailwind CSS for styling. TypeScript everywhere.

Next.js Applications

Next.js is our default when a React application needs server rendering, static generation, or both. SEO-critical marketing sites with dynamic content. Full-stack applications where the API and the frontend ship from the same codebase. Content-driven platforms where pages must be indexable by search engines and AI crawlers.

We use Next.js App Router with React Server Components for new projects. Pages Router for existing codebases that haven’t migrated. Static generation with ISR (Incremental Static Regeneration) for content that changes periodically but must load instantly.

React Native Mobile

Cross-platform iOS and Android from a shared React codebase. Our React Native work includes a sports operations platform used by 100% of NFL teams, where we shipped mobile features, accessibility improvements, and performance optimizations across a 2+ year engagement.

React Native makes sense when you already have a React web frontend and want to share components, design tokens, and business logic across web and mobile. When the project requires platform-specific performance (camera, GPS, heavy animations), we build native with Swift and Kotlin instead.

Component Libraries and Design Systems

Reusable component libraries in TypeScript with Storybook documentation. Built once, used across every screen in the application. Buttons, form inputs, data tables, modals, toast notifications, navigation patterns. Each component typed, tested, and documented.

The value of a component library is not the library itself. It is the speed it gives you six months later when a new feature requires three new screens and every screen can be assembled from existing components in hours instead of days.

The React Stack We Use

Framework: React 18/19, Next.js 14/15, Vite for SPAs. Language: TypeScript (default on all new projects). State: React Query (TanStack Query) for server state, Zustand/Jotai for client state, Redux Toolkit when inherited. Styling: Tailwind CSS, CSS Modules, styled-components when the codebase uses it. Testing: Vitest/Jest for unit, React Testing Library for components, Cypress/Playwright for E2E. Mobile: React Native for cross-platform, Expo for rapid prototyping. Build: Turborepo for monorepos, GitHub Actions for CI/CD. Backend pairing: Laravel, Django, Node.js (Express/Fastify).

What It Costs

Senior React developer (dedicated): $50-99/hr. A full-time dedicated developer costs $8,000-$16,000/month.

By project type:

React SPA or dashboard MVP: $30K-$70K, 2-4 months.

Marketplace frontend (React + API integration): $60K-$150K, 4-8 months.

Next.js full-stack application: $40K-$100K, 3-6 months.

React Native mobile app: $40K-$100K, 3-6 months.

Component library and design system: $20K-$50K, 2-4 months.

Compare to US React agencies at $100-$250/hr. Our $50-99/hr rate with senior-only engineers and European timezone overlap delivers 40-60% lower total cost.

Who We Are

EltexSoft is a boutique React development company. 35-50 senior engineers. Headquartered in Lisbon, Portugal. Engineering team in Ukraine. Founded in 2015.

React clients include HeyTutor (9-year EdTech marketplace), Nautical Commerce ($30M Series A, acquired by Traide), and a US sports operations platform (100% of NFL teams). We also build with Laravel, Django, Vue, iOS, and Android.

5.0 Clutch rating across 30+ verified reviews. 200+ five-star Upwork reviews. Top Rated Plus and Expert-Vetted agency status (top 1%). Average client engagement: 3+ years.

30-minute technical call. Bring your React architecture challenge, your Next.js migration, or your marketplace frontend requirements. We’ll tell you what we’d build and what we wouldn’t.

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