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Core Services
React 19Next.js 15ViteTypeScriptProduction-Grade

React.js Development Agency — Production Apps at Scale

Your React App Ships Fast — Or It Bleeds Users Every Second It Stalls

90+
Lighthouse score
Mobile, production build
4–8 weeks
Typical timeline
MVP to full product
$25K–$180K
Project range
Scope and complexity dependent
5,000+
Sites shipped
Since 2012
What Actually Ships When You Hire a React Agency — And What Breaks Six Months Later

Your React app goes live, traffic hits, and one of two things happens: it holds steady at 90+ Lighthouse under load, or it stalls at 2.4s Time to Interactive and your bounce rate climbs into the 60% range. A React.js development agency builds the first kind — component architectures on React 19 Server Components, Next.js 15 App Router with edge SSR, TypeScript across every file, and Playwright coverage that blocks merges below 90%. Your team gets a fixed-scope SOW, weekly staging deploys, and a production handoff with monitoring, error tracking, and runbook docs. The difference between us and an offshore quote is what survives past the demo: your app handles real traffic, passes accessibility audits, and doesn't collapse when your product team ships an update nine months later. We staff senior engineers — minimum five years shipping React in production — and assign a dedicated tech lead to your engagement. That's what your business actually needs from a React shop.

项目失败的原因

Your current app scores below 50 on Lighthouse and users bounce before the page finishes loading. Every 100ms of load time costs roughly 1% in conversion — a slow React app is bleeding revenue daily.
The offshore team delivered a working demo, but the codebase has no tests, no types, and no documentation. Your next hire will spend 3–6 months untangling spaghetti before they ship a single feature.
You're stuck on Create React App or an old Next.js version and can't adopt Server Components or the App Router. Technical debt compounds — migration costs double roughly every 12 months you wait.
Designers hand off Figma files and what comes back looks nothing like the spec on mobile. Rework cycles eat 20–40% of your sprint velocity when there's no design-to-code review loop.
You don't have a CI/CD pipeline, so every deploy is a manual, nerve-wracking push to production. One bad merge on a Friday afternoon takes down your app and you don't find out until Monday.
Your React app works but your engineering team can't explain why it's slow or how to fix it. Without profiling and bundle analysis, you're guessing — and guessing doesn't survive a traffic spike.

我们构建的内容

Lighthouse score under 50 and your page takes 3+ seconds to render — users are bouncing before they see your product

React 19 Server Components cut your JavaScript bundle in half and render faster on every device your buyers use

Offshore team delivered a working demo but left behind untested, untyped spaghetti that no engineer wants to touch

Next.js 15 App Router with parallel routes and streaming SSR deployed to Vercel edge for sub-200ms TTFB globally

Stuck on Create React App or Next.js 12 and can't adopt Server Components without a full rewrite

Vite builds for standalone SPAs that don't need SSR — instant HMR in dev, production bundles under 150KB gzipped

Figma handoffs look perfect in the design file but ship broken on mobile because there's no review loop

TypeScript end-to-end, Vitest unit coverage, Playwright E2E suite, CI that blocks any merge dropping below your threshold

No CI/CD pipeline so every deploy is a manual push and one bad Friday merge takes down production until Monday

Supabase auth and Postgres with row-level security, OAuth flows, magic links, real-time subscriptions wired into your components

Your React app works but nobody on your team can profile why it's slow or fix it when traffic spikes

Lighthouse budgets enforced in CI, Core Web Vitals tracked in Vercel Analytics, Sentry error monitoring from day one

我们的流程

01

Scope and Architecture Review

We audit your existing codebase or requirements, define the component architecture, and deliver a fixed-scope SOW with line-item estimates.
Week 1
02

Design System + Data Layer

We build your component library in Storybook, wire up Supabase schemas, and establish the TypeScript interfaces that every feature builds on.
Week 2–3
03

Feature Sprints

Two-week sprints with staging deploys every Friday — you review working software in a real browser, not a slide deck.
Week 3–6
04

Performance + QA Pass

Lighthouse audits, bundle analysis, Playwright E2E runs, accessibility checks against WCAG 2.2 AA, and load testing up to your target concurrency.
Week 6–7
05

Production Deploy + Handoff

We deploy to Vercel with preview environments, configure monitoring and alerting, and hand over documentation, runbooks, and a 30-day support window.
Week 7–8

常见问题

你们的 React.js 项目需要多少费用?

大多数项目合同在 $25K 到 $180K 之间。包含身份验证、几个 CRUD 流程和部署的有限范围 MVP 通常在 4-6 周内需要 $25K–$50K。具有实时功能、管理员仪表板和第三方集成的完整产品构建在 8-14 周内需要 $80K–$180K。我们采用固定范围 SOW 定价 — 在我们写一行代码之前,你就会知道这个数字。没有小时计费的意外。

React 应用程序的典型开发周期是多久?

大多数项目需要 4 到 8 周。第一周进行架构和范围确定。第二周到第六周是功能冲刺,每周部署到暂存环境。第六周到第八周进行 QA、性能调优和生产交接。具有复杂集成的较大构建可能会延长到 12-14 周,但我们会在 SOW 中提前标记这一点。

为什么选择 React 19 和 Next.js 15 而不是其他框架?

React 占据了大约 40% 的生产网络应用 — 你的下一位员工已经了解它。React 19 增加了服务器组件和操作,这意味着更少的客户端 JavaScript 和更快的页面加载,而不会放弃生态系统。Next.js 15 的应用路由器为我们提供了流式 SSR、Vercel 上的边缘渲染和文件路由,使代码库在规模上保持可导航。我们已经评估过 Svelte、Solid 和 Astro — 它们对特定用例都很好 — 但对于需要在 3-5 年内聘请、维护和迭代的团队来说,React 和 Next.js 是务实的选择。

典型项目的工程团队规模有多大?

2 到 4 名工程师加上一名专职技术主管。技术主管负责架构决策、代码审查和你的每周同步。工程师是资深的 — 至少有 5 年的 React 生产工作经验。我们不会用初级开发人员补充空缺或在冲刺中途调换人员。在启动前,你将了解团队中的每一个人。

你们能保证 Lighthouse 性能分数吗?

能保证。我们承诺在性能、可访问性、最佳实践和 SEO 方面达到 90+ 分 — 在生产构建上、移动设备上、通过限制的 4G 连接进行测试。我们将性能预算纳入 CI,以便分数在交接后不会下降。如果我们在启动时没有达到 90+ 分,我们将免费修复。

项目交接后会发生什么?

每项合同都包括 30 天的启动后支持窗口,用于错误修复和配置问题。之后,我们提供从 $5K 开始的月度保留服务,用于持续的功能工作、性能监控和依赖项更新。我们也会提交完整的文档 — 架构图、Storybook 中的组件文档、CI/CD runbook 和环境设置指南 — 以便你的内部团队可以在需要时清晰地接管。

你们能与我们现有的 React 代码库合作吗?

绝对可以。我们大约 40% 的合同从现有代码库开始。我们将在第一周进行技术审计 — 包大小、测试覆盖率、TypeScript 采用、依赖项健康状况和性能分析。你将获得一份书面报告,其中包含优先建议和迁移路径,如果你正在使用旧版本的 React 或 Next.js。我们已经进行了无数次从 CRA 迁移到 Vite、Pages Router 迁移到 App Router 以及 JavaScript 迁移到 TypeScript 的工作。

与离岸 React 团队相比,你们如何?

一个时薪 $30–$50 的离岸团队看起来在纸面上更便宜。实际上,我们看到客户在花费 $40K–$80K 进行离岸构建后来找我们,这些构建缺乏测试、交付超过 300KB+ 的 JavaScript 包,并在第一次真正的 QA 检查时失败。我们的固定范围定价意味着你提前了解总成本。我们的工程师在 Vercel 和 Supabase 上已交付数千个 React 应用 — 他们不会花你的预算学习堆栈。你将获得每周的暂存部署、低于 200 毫秒的 TTFB 和一个你的下一位员工可以实际阅读的代码库。

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