A guide to hiring React developers
React is an open source JavaScript library from Meta for building user interfaces. Teams use it to break a screen into small parts, called components, and to update only the parts that change. Many web products, from small dashboards to large shops, are built this way. This guide explains what ReactJS developers do, how the role differs from nearby roles and how to set up the work so it goes smoothly. It suits a founder building a first product as well as a company that wants to strengthen an existing front end.
What React developers work on
Most React work falls into four groups. Screens are the pages and flows that users see, built from components. Data work connects those screens to your APIs and keeps what is shown in step with the server. Quality work covers tests, accessibility and speed. Structure work sets up the folders, shared components, build steps and rules that keep a growing codebase tidy. A small project may need one person for all four, while a larger one splits them.
How this role differs from nearby roles
A React developer works on the front end in depth. Our web developers cover wider work, such as WordPress, Laravel and other stacks. Our full-stack developers and MERN developers also build the server and database. If your team prefers a framework with more built-in structure, see our Angular developers. For the server side of a React app, our Node.js developers are a natural match. Choose this page when the front end is the job.
React, Next.js and the tools around them
- React itself handles components and updates on the screen.
- Next.js adds routing and server rendering, which helps pages load quickly and be found in search.
- TypeScript adds types, which catch many mistakes before the code runs.
- Tools for state and data, such as Redux Toolkit or React Query, keep shared information in one place.
- Jest, React Testing Library, Cypress and Playwright check that screens keep working after each change.
Say early which of these your product uses today. It changes the plan, the tools and the skills you should ask for.
What to decide before you hire
- Whether you are building a new product, extending one or cleaning up old code.
- Whether pages must be found in search, which points toward server rendering.
- Which design files, component library or style guide the developer will follow.
- Which APIs the screens will call, and who owns them.
- How code is reviewed, tested and released today.
Reading a React developer’s profile
Start with products you can open in a browser. Ask which screens the person built and what they would change today. If code is public, read it and see whether the components are small and the history tells a clear story. Treat a long list of libraries with no shipped work as a warning sign. Ask about a slow page they fixed: someone who can retrace how they found the cause has real experience.
Interview questions to try
- When would you reach for shared state, and when would you keep state inside one component?
- How do you find out why a screen feels slow, and what do you try first?
- How do you test a form with several steps and error messages?
- When would you pick server rendering over a plain browser app?
- How do you make a custom dropdown usable with a keyboard?
Listen for plain answers with examples from real projects. Be wary of anyone who gives one tool as the answer to every question.
Run a small paid task
Set each finalist a small job close to your real product. Options include building one screen from a design, fixing a known bug in a copy of your code, or reviewing a pull request and writing down what they would change. Pay for the hours. Then compare readability, how the person explains their choices and how they respond to follow-up questions.
Match experience to the stage
For a first version you need someone who moves quickly, keeps the structure simple and is happy to talk to a designer. For a growing product you need a developer who sets up shared components, tests and clear rules. For an older codebase you need patience: someone who can read what is there, make small safe changes and explain the plan. Titles vary a lot, so ask what each person was responsible for.
Give them tools and a rhythm
Open the repository, the staging site and the design files to your developer, and give hosting access only as far as the work needs. Keep production logins and payment keys inside your company. Meet weekly during the first month and look at every change together. Later, a brief weekly update and a review before each release is enough.
Working with designers and your server team
A React developer works well with a designer who shares files and states early, and a back-end developer who documents the API. Agree on data shapes and error messages before building a screen. Review designs on real devices, not only in a browser window. Keep a short list of known issues, such as old components and missing tests, so that planning for them is easy.
Mistakes to avoid
- Choosing a developer from a list of tool names instead of shipped work.
- Adding a heavy state tool to a small app that does not need one.
- Leaving speed and accessibility until the end of the project.
- Skipping tests because the first version is small.
- Creating the repository or hosting accounts under a contractor’s name.
Need a wider team as well? Read about how to hire web developers, full-stack developers or Angular developers, and see how hiring works on our pages.