React.js Development Agency — Production Apps at Scale

Most engagements fall between $25K and $180K. A scoped MVP with auth, a few CRUD flows, and deployment typically runs $25K–$50K over 4–6 weeks. A full product build with real-time features, admin dashboards, and third-party integrations lands in the $80K–$180K range across 8–14 weeks. We price on fixed-scope SOWs — you'll know the number before we write a line of code. No hourly billing surprises.

Four to eight weeks for most projects. Week one is architecture and scoping. Weeks two through six are feature sprints with weekly staging deploys. Weeks six through eight cover QA, performance tuning, and production handoff. Larger builds with complex integrations can extend to 12–14 weeks, but we'll flag that in the SOW upfront.

React owns roughly 40% of production web apps — your next hire already knows it. React 19 adds Server Components and Actions, which means less client-side JavaScript and faster page loads without ditching the ecosystem. Next.js 15's App Router gives us streaming SSR, edge rendering on Vercel, and file-based routing that keeps codebases navigable at scale. We've evaluated Svelte, Solid, and Astro — they're great for specific use cases — but for teams that need to hire, maintain, and iterate over 3–5 years, React and Next.js are the pragmatic choice.

Two to four engineers plus a dedicated tech lead. The tech lead runs architecture decisions, code reviews, and your weekly sync. Engineers are senior — minimum five years of React production work. We don't backfill with juniors or rotate people mid-sprint. You'll know every name on the team before kickoff.

Yes. We commit to 90+ on Lighthouse performance, accessibility, best practices, and SEO — measured on the production build, on mobile, over a throttled 4G connection. We bake performance budgets into CI so scores can't regress after handoff. If we don't hit 90+ at launch, we fix it at no additional cost.

Every engagement includes a 30-day support window post-launch for bug fixes and configuration issues. Beyond that, we offer monthly retainers starting at $5K for ongoing feature work, performance monitoring, and dependency updates. We also hand over full documentation — architecture diagrams, component docs in Storybook, CI/CD runbooks, and environment setup guides — so your internal team can take over cleanly if you prefer.

Absolutely. About 40% of our engagements start with an existing codebase. We'll run a technical audit in week one — bundle size, test coverage, TypeScript adoption, dependency health, and performance profiling. You'll get a written report with prioritized recommendations and a migration path if you're on an older React or Next.js version. We've migrated apps from CRA to Vite, Pages Router to App Router, and JavaScript to TypeScript more times than we can count.

An offshore team at $30–$50/hr looks cheaper on paper. In practice, we see clients come to us after spending $40K–$80K on offshore builds that lack tests, ship with 300KB+ JavaScript bundles, and break on the first real QA pass. Our fixed-scope pricing means you know the total cost upfront. Our engineers have shipped thousands of React apps on Vercel and Supabase — they won't spend your budget learning the stack. You'll get weekly staging deploys, sub-200ms TTFB, and a codebase your next hire can actually read.