How to hire a React developer

Most bad React hires trace back to one of two mistakes: screening for trivia instead of judgment, or never defining what the role actually needs. This guide fixes both. Follow the steps in order.

1. Scope the role before you write a word

Decide what this person owns. Are they executing well-defined features, or owning the architecture of a new app? That single answer sets the seniority, the rate, and the interview. Write down the stack around React (TypeScript, Next.js, the API style, the testing tools) because “React developer” alone tells a candidate nothing.

2. Write a job description that filters

A good description repels the wrong people as much as it attracts the right ones. State the seniority, the actual problems they will work on, and the stack. Skip the laundry list of twenty technologies. See how to write a developer job description for a template.

3. Screen for fundamentals, not framework trivia

On a first call, probe judgment: how they structure state in a large app, when they reach for a library versus writing it, how they think about re-renders and performance. Avoid “name every hook” quizzes. You are hiring reasoning, not recall.

4. Run a short, paid, realistic exercise

Give a two to three hour task that looks like your real work: build a small feature against a fake API, with a component or two and a test. Pay for their time. You learn more from how someone structures a real problem than from any whiteboard puzzle.

5. Check TypeScript and testing depth specifically

Ask to see typed code and a test they are proud of. Weak TypeScript and absent tests are the two habits that hurt most on a growing codebase, and both are easy to check.

6. Interview for collaboration

A React developer works with design, product, and back-end engineers daily. Ask about a disagreement they navigated and a decision they later regretted. You are looking for someone who can be wrong gracefully and communicate clearly.

7. Decide with a trial, not a hunch

Where possible, start with a small paid engagement before a full commitment. Two weeks of real work tells you more than five interviews.

Red flags to watch for

• Cannot explain a past architecture decision beyond “that is how the tutorial did it.”
• Treats TypeScript as a nuisance rather than a tool.
• No tests, ever, with no good reason.
• Talks only about the happy path and never about failure, loading, and edge states.

The shortcut

Every step above is work you can do yourself, and this guide gives you what you need to do it well. If you would rather skip the screening, a vetted network does steps 3 through 5 for you and hands you a shortlist that has already passed. Either way, scope the role first: that step is yours to own.