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Typical React MVP
Core workflow, componentized, TypeScript
100%
Senior engineers, US-based
No offshore handoff mid-build
Every sprint
Working software on a preview URL
Not a status deck between milestones
100%
Code and repository yours
From the first commit
Architecture decisions
The decisions that decide whether a React app ages well
React itself is a small library — components and a rendering model. Everything that determines whether an app is still maintainable at month eighteen is a decision made around it, not by it.
State management, sized to the app
React's built-in Context is enough for a lot of apps and the wrong tool for others — it re-renders more broadly than a dedicated store and wasn't built for high-frequency updates. Redux Toolkit, Zustand, and TanStack Query each solve a different shape of state (global app state, lightweight stores, server-cache state), and picking one by default rather than by fit is a common source of unnecessary complexity.
Component architecture that survives feature three
The first version of a component is almost always too specific to its first use case. Reusable components come from noticing the second and third use case and refactoring toward the shared shape — not from over-abstracting on day one, which produces its own kind of technical debt.
TypeScript is the default, not an upsell
A React codebase without types is workable at ten components and painful at a hundred, once prop shapes drift between the component that provides data and the one that consumes it. TypeScript catches that class of bug at compile time instead of in a user's browser.
Build tooling: Vite over Create React App
Create React App is no longer actively maintained, and Vite has become the standard for a plain React SPA — faster dev-server startup, faster hot module replacement, and a simpler configuration surface. A new React project started today has no good reason to reach for CRA.
Testing: component behavior, not implementation detail
React Testing Library tests what a user would actually experience — text on the screen, a button that responds to a click — rather than internal component state, which makes tests survive a refactor instead of breaking alongside it. Playwright covers the end-to-end paths a unit test can't reach.
Server state vs. client state
Data fetched from an API and data that only exists in the browser (a form draft, a modal's open/closed state) behave differently and are usually mismanaged by treating them the same way. TanStack Query (or SWR) for server state, plain React state or a lightweight store for client state, is the pattern that avoids the stale-cache bugs that come from conflating the two.
When React is the right call
React for interactive products, something simpler for content
The wrong tool for the job is the most expensive mistake on this page, and it runs in both directions — a content site built as a React SPA, and a genuinely interactive product built without a framework at all.
A content-driven marketing site doesn't need a React SPA
A handful of mostly-static pages that occasionally change are usually better served by a CMS-backed static site, or by Next.js's static generation, than by a client-rendered React app that ships a JavaScript bundle before the reader sees a headline. React's strength is stateful interaction, and a marketing site mostly doesn't have any.
A genuinely interactive product is where React earns its cost
Dashboards, editors, multi-step workflows, and anything where the interface has to respond continuously to what a user does are the cases React was built for. The component model and one-way data flow scale with that kind of complexity in a way that hand-rolled DOM manipulation doesn't.
An existing server-rendered app doesn't need a full React rewrite
React can be adopted incrementally inside a Rails, Django, or PHP app for the specific screens that need it, without a rewrite of the whole product. This is usually the right call when most of the app is fine as it is and only a handful of screens need real interactivity.
Team hiring pool is a real input to this decision
React has one of the largest hiring pools of any frontend framework, which lowers the long-term risk of the choice regardless of which framework is technically superior for a given feature. That's a legitimate factor in the decision, not a compromise.
What's involved
React engagement types
The variable that moves a React build's scope isn't page count — it's how much real interactivity and shared state the interface has to manage, and how much of an existing codebase has to be migrated rather than built fresh.
| Engagement | Commitment | Timeline | What's included |
|---|---|---|---|
| React MVP or SPA build | Fixed scope | 4 – 8 weeks | Core workflow, component architecture, TypeScript, and a state-management approach sized to the app. |
| Migration off Angular, Vue, or jQuery | Fixed scope | 6 – 14 weeks | Incremental or full rewrite into React, scoped screen by screen where a full rewrite isn't the right call. |
| Class components to hooks modernization | Fixed scope | 3 – 8 weeks | An older React codebase brought onto current patterns — hooks, function components, modern state management. |
| Design system or component library | Fixed scope | 4 – 10 weeks | A shared, tested component library that stops the same button from being rebuilt five different ways across a product. |
| Performance and accessibility audit | Fixed scope | 1 – 3 weeks | Render-profiling, bundle-size review, and a WCAG pass with a prioritized fix list. |
| Ongoing React support | Ongoing retainer | Ongoing | Standing ownership of the frontend through dependency upgrades, new features, and browser compatibility issues. |
Ranges assume US-based senior engineers and include TypeScript and tests rather than treating them as a separate line item. A migration quote well under these bands is usually assuming a cleaner cutover than the legacy codebase will actually allow — most migrations uncover screens nobody remembered still existed.
Migration realities
What actually happens when you move to React
Almost nobody starts a React project on a blank slate. Most React work is arriving at an existing product from somewhere else, and each starting point has its own honest timeline.
From jQuery or vanilla JavaScript
The biggest shift isn't syntax, it's the mental model — imperative DOM manipulation gives way to declarative state that drives what renders. Teams underestimate this the most of any migration path, because the code looks similar before it's rewritten and very different after.
From Angular or Vue
Component-based thinking carries over directly; what changes is React's more opinionated approach to unidirectional data flow and its smaller, less batteries-included core (routing and state management are separate choices, not built in). A screen-by-screen migration behind a feature flag is usually safer than a big-bang cutover.
From Create React App to Vite
CRA is no longer actively maintained, and its build performance falls further behind Vite every year. This migration is usually mechanical — swap the bundler, adjust environment variable prefixes and a handful of config differences — and low-risk compared to a framework migration.
Integrating React into a server-rendered app (micro-frontends)
Mounting a React component inside an existing Rails or Django template is a real, incremental path that doesn't require rewriting the rest of the app. The risk is state and styling leaking across the boundary between the old and new code if that boundary isn't deliberately isolated.
State management sprawl
A codebase that's accumulated Redux, Context, and three different fetch-and-cache patterns over several years of contributors is one of the more common things we're asked to untangle. Consolidating onto one server-state tool and one client-state pattern is usually worth doing before adding the next big feature, not after.
Hiring
What to look for when hiring a React developer
React's low barrier to a first working component is also why the skill range among people who list it is wide. These are the things that actually separate a React developer who ships maintainable code from one who ships a working demo.
Reusable component thinking, not just JSX fluency
Writing a component is easy; recognizing the right level of abstraction — not too specific, not prematurely generic — is the skill that determines whether a codebase stays maintainable as it grows.
Real TypeScript proficiency
There's a wide gap between a codebase that's technically written in TypeScript and one where the types actually catch bugs — `any` scattered through prop types defeats the purpose. Ask to see a PR, not just a resume line.
Testing discipline that survives refactors
A candidate who tests component behavior with React Testing Library, rather than implementation details that break on every refactor, will produce a test suite worth keeping rather than one that gets deleted in frustration a year in.
Performance instincts, not premature optimization
Knowing when a re-render actually matters — and when reaching for `useMemo` everywhere is just adding complexity without a measured problem — is a sign of someone who's shipped React at scale rather than read about it.
Accessibility as a default, not an afterthought
Semantic HTML inside JSX, keyboard navigation, and ARIA attributes used correctly rather than sprinkled on to pass an automated scanner are the difference between an app that's accessible and one that merely looks like it in a Lighthouse report.
Related
Related services
What React projects usually connect to.
Questions
Common questions about React development
What teams ask before a first call.
It depends on whether the work is a new MVP, a migration off an existing framework, or an ongoing support engagement — a component library or design-system build is a different scope again. What moves a quote most is how much shared state the interface manages and how much of an existing codebase has to be migrated rather than built fresh.
A scoping call produces a real figure faster than any range on a page would, and it's the fastest way to find out which category your project actually falls into.
React is a JavaScript library for building interactive user interfaces out of reusable components — dashboards, editors, multi-step workflows, and any product where the interface has to respond continuously to what a user does. It's not a full framework on its own; routing, data fetching, and server rendering are separate choices built around it.
That's also why the React-vs-Next.js question comes up constantly: Next.js is one common way of adding those pieces back in.
Plain React (with Vite) when the app is client-rendered by nature — behind a login, not something search engines need to index, and routing and SEO aren't primary concerns. Next.js when you need server rendering, file-based routing, or a mix of static and dynamic pages in one app, which covers most public-facing products.
We'll tell you plainly which one your project actually needs rather than defaulting to whichever is more familiar to a given team — see /next-js for the fuller version of this decision.
Yes. Component-based frameworks like Angular or Vue migrate to React in a fairly direct, screen-by-screen path; jQuery or vanilla JavaScript codebases require the bigger shift from imperative DOM manipulation to declarative, state-driven rendering, and take longer as a result.
We'll scope it honestly — a big-bang rewrite is rarely the safest path, and a phased migration behind a feature flag usually costs less in risk even when it costs a bit more in calendar time.
Yes, by default rather than as an add-on. A React codebase without types is manageable at ten components and genuinely painful past a hundred, once prop shapes drift between the component that provides data and the one that consumes it — TypeScript catches that class of bug before it reaches a user's browser.
React Testing Library for component-level tests that check what a user actually experiences — text on the screen, a button that responds to a click — rather than internal implementation details that break on every refactor. Playwright covers end-to-end flows across multiple components and real navigation.
This combination produces a test suite that survives a refactor instead of needing to be rewritten alongside it, which is the difference between tests a team keeps and tests a team eventually deletes.
React builds interfaces for the browser; React Native uses the same component model and a lot of the same skills to build native iOS and Android apps instead of web pages. A React-fluent team has a real head start on React Native, but it's a different rendering target with its own platform considerations.
See /mobile for React Native specifically, and /ios or /android for the platform-specific decisions that come up once you're building for a store rather than a browser.
Yes. Source code lives in a repository under your own organization from the first commit, not ours. That's the only arrangement that doesn't lock a growing product to a single vendor for its next feature, its next hire, or its next migration.