Quick summary
Where to hire ReactJS developers: Upwork for one well-defined job, Toptal or an agency if you want candidates screened for you, a development subscription for a steady list of work on a live React app, or a full-time employee if there are years of full-time work ahead.
What it costs: Upwork's own cost pages put React.js developers at $20 to $38 an hour and React developers at $51 to $75. Clutch puts most agencies at $25 to $49 an hour. A full-time US software developer's median wage is $135,980 before benefits.
What to test: when they would not use useEffect, what they would build a new React app with now that Create React App is deprecated, and where your app's security checks live. Then run a short paid trial.
Hire ReactJS Developers at a Glance
| Where to hire | What it costs | How fast | Best for |
|---|---|---|---|
| Freelance marketplace (Upwork) | About $20 to $75 an hour, from Upwork's two React cost pages | Days | One well-defined job, if someone can review the code |
| Vetted network (Toptal) | A higher hourly rate, quoted per developer | Toptal says an average match in under 24 hours | Skipping the first round of vetting |
| Agency or dedicated-developer firm | Most agencies at $25 to $49 an hour (Clutch) | Weeks, after scoping | A large build that needs several people at once |
| Development subscription | A flat monthly fee | Days | A live React app with a steady list of features and fixes |
| Full-time employee | A median $135,980 a year in the US, before benefits | Months | Years of full-time React work ahead |
Before you hire, ask every candidate these three questions:
- Question 1, "When would you not use useEffect?" useEffect is the React tool for reaching outside the app, such as calling a server. React's own docs say that if no outside system is involved you should not need one, and that removing unnecessary ones makes code "easier to follow, faster to run, and less error-prone." A strong developer knows this without looking it up.
- Question 2, "What would you start a new React app with?" The React team deprecated Create React App in February 2025 and now recommends a framework such as Next.js or React Router, or a build tool such as Vite. A developer who still reaches for Create React App has not kept up.
- Question 3, "Where do the security checks for our app live?" React code runs in the visitor's browser, where anyone can read it. A good answer puts permission checks and secret keys on the server, never in the React code.
Then run a short paid trial on a real task, in a code repository your company owns.
Need React work shipped without hiring?
A senior developer on subscription: $2,995 a month, as many requests as you like, each shipped within 2 business days, and your money back if the first 14 days don’t prove it.
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This guide is for founders who need someone to build or improve the screens of a web app, such as a SaaS product, a dashboard or a customer portal, built with React. It is written for non-technical readers. If you are not sure React is what you need, start with our guide to hiring a web developer. If your app runs on Next.js, our guide to hiring a Next.js developer goes deeper on the server side.
React or React Native? Decide What You Are Hiring For
React, ReactJS and React.js are three names for the same thing: a JavaScript library, first built at Meta, for the part of a web app people see and click. Job posts and hiring sites use all three, so do not let the spelling confuse you.
React Native is different. It uses React's ideas to build mobile apps that people install from the App Store or Google Play. The skills overlap, but releasing to app stores, testing on phones and handling device features are their own jobs.
- You need a React developer if your product runs in a web browser: a SaaS app, a dashboard, an admin panel, a booking system.
- You need a React Native developer if your product is a mobile app people install on their phone.
React is also the most common choice for web app screens. In Stack Overflow's 2025 Developer Survey, 44.7% of all respondents and 46.9% of professional developers said they had used React, so there is a large pool to hire from. The catch is that quality varies just as widely, which is why the questions above matter.
What a ReactJS Developer Should Know
JavaScript and TypeScript
React is written in JavaScript, and most professional React apps now use TypeScript, a version of JavaScript that catches many mistakes before the code runs. Expect both.
Components, hooks and state
React apps are built from components, small reusable pieces of the screen. Hooks such as useState and useEffect manage the data each piece shows. Misused hooks are behind many slow, glitchy React apps, such as screens that load the same data twice.
A framework or build tool
Since the React team deprecated Create React App on February 14, 2025, new apps start on a framework such as Next.js or React Router, or a build tool such as Vite. If you have an older app on Create React App, ask how they would move it.
Talking to the back end
React shows data, but your server stores it and decides who can see it. A React developer should be comfortable calling APIs, handling errors and loading states, and working with whoever owns the back end, or owning it themselves if they are full stack.
Keeping React up to date
React 19 shipped in December 2024. In December 2025 the React team disclosed a critical flaw (CVE-2025-55182, rated 10 out of 10) in React Server Components, a feature used by frameworks such as Next.js, and told affected apps to upgrade immediately. A good developer checks for security releases before anything else.
If you need someone who builds both the screens and the server behind them, see our guide to hiring a full stack developer.
Where to Hire ReactJS Developers
A freelance marketplace, such as Upwork
The cheapest way in and the widest choice. You write the job post, read proposals, interview and test, and you manage the work. It suits one well-defined job, such as a new screen or a bug fix, especially if someone on your side can review the code. Our comparison of Toptal vs Upwork covers how the two differ.
A vetted network, such as Toptal
The network screens developers before you meet them. Toptal says fewer than 3% of applicants are accepted, its average time to match is under 24 hours, and each engagement starts with a trial of up to two weeks that you pay for only if you are satisfied. It does not publish its rates. See Toptal alternatives for other networks.
An agency or dedicated-developer firm
Most of the search results for "hire ReactJS developers" are firms that supply one developer or a whole team on a monthly contract. You get more people at once and someone managing them, at a higher price. Ask who will actually write your code and whether that person can change without your say. Our guide on agency vs freelancer helps you choose.
A development subscription
A flat monthly fee for requests worked one at a time. It suits a live React app with a steady list of features and fixes, where you want to change priorities each week without a new quote. It is not a team working in parallel. See developer as a service.
A full-time employee
Someone who works only on your product and knows it deeply. It makes sense once there are years of full-time work ahead and you can afford the salary, benefits and the weeks it takes to hire. Our guide on how to hire a software developer covers the process.
How Much It Costs to Hire a ReactJS Developer
| Route | Published figure | Source |
|---|---|---|
| Freelancer on Upwork | $20 to $38 an hour (React.js page); $51 to $75 an hour (React page) | Upwork |
| Agency | Most at $25 to $49 an hour; average reviewed project about $132,000 | Clutch |
| Vetted network | Not published; quoted per developer | Toptal |
| Full-time US software developer | $135,980 median salary; about $194,000 with benefits by our estimate | BLS |
Upwork's two pages cover overlapping groups of freelancers, which is likely why their figures differ. Take the gap as a reminder that seniority moves the rate far more than the word "React" does. A developer who has shipped and maintained a React app with paying users is worth more per hour than one who has finished a course, and usually costs less per finished feature.
The full-time estimate works like this. Benefits made up 30% of private employers' compensation costs in June 2026, and salary the other 70%, so a $135,980 salary comes to roughly $194,000 a year in total by our estimate, before recruiting.
What moves the total more than the rate is how clearly you describe the work. A short, written request with the checks that prove it is done saves more than a lower hourly rate. Our guide to writing software requirements shows how.
How to Interview a React Developer
You do not need to read code to tell a strong React developer from a weak one. Ask about the parts of a React app that go wrong most often, and listen for specific answers.
Questions that show real React experience
- "Show me a React app you built that people log into. Which parts did you build, and which did someone else?"
- "When would you not use useEffect?" Listen for calculating values directly instead of storing extra copies, which React's docs recommend.
- "What would you start a new React app with today, and how would you move an old Create React App project?"
- "Where do permission checks and secret keys go?" The answer should be the server, never the React code.
- "Which version of React are we on, and what would you upgrade first?" A good answer starts with security releases.
- "How will you show me what you changed?" Look for small, regular deliveries with a short written summary, not one big reveal.
If you are taking over an existing React app, ask the candidate to look at the code before they quote. A developer who suggests a full rebuild before seeing the code is guessing. Our guide to code audit services covers what that first look should include.
Red Flags When You Hire a React Developer
- They are really a React Native developer. Great for a phone app, a risk for a web app, and the other way round.
- Only tutorial projects. A to-do list or a weather app does not show they can handle logins, payments and real users.
- Secret keys in the front end. Anything in React code is public.
- The code lives in their account. If the repository or hosting is in their name, you do not control your own product.
- Long silences. Weeks with nothing you can click through is how budgets disappear. Ask for working software every week or two.
- A rewrite before they have read the code. Rebuilding a working React app is rarely the cheapest fix.
Which Option Should You Choose?
The lowest rate and the fastest start. You do the vetting, managing and testing.
Screened people and a process, at a higher price. Agree how changes are priced before you sign.
A flat monthly fee, requests worked one at a time, and priorities you can change each week, with no hire to make yet.
Deep knowledge of your product. Budget for the salary, benefits and the time it takes to hire.
A different hire. Look for apps they have shipped to the App Store and Google Play.
How StackTie Fits
StackTie is a development subscription for founders who have a web app and more to build than people to build it. You add requests in plain English to your own Trello board, they are worked one at a time in the order you set, and every request comes back within 2 business days as a pull request with a plain-English summary of what changed and why. Big projects are split into smaller requests that each ship on their own. One senior developer, Michael, leads every build, so you always know who is writing your code. Everything we build belongs to your company and lives in your own accounts, there is no contract, and there is a money-back guarantee if it is not a fit. The subscription covers React web apps, including Next.js and Vite, plus the back end, payments, integrations and fixes behind them; it is not for React Native or other native iOS and Android apps, or a whole team working in parallel. The price and what is included are on the homepage.
