I just went through a bunch of interviews for React positions. Most companies will have you do a take home project or a live coding type of thing where you build a basic UI based on requirements. So definitely be prepared to fetch data from an API, build out a couple components, keep state, and output data to the screen. As far as questions, I got these a lot: How does the useEffect Hook work? How woulda YOU manage state in a larger application (I.e. Redux, Context API, customs store, etc) How do you make sure an app isn’t unnecessarily rerendering? Explain how routing might work in React Explain difference between props vs state What is useRef and how would you implement it? How do YOU add styling to a React project? Explain async/await These are a few questions I saw multiple times. A lot of these questions don’t necessarily have right answers, they more want to see what you’ve worked on and how you’ve implemented things in your experience. I wouldn’t worry about anything pre-hook era. I didn’t get a single question about doing things without hooks. I also didn’t get a ton of core JS questions, although I’d be prepared with basic JS principles. It does seem most positions looking for “React developers” care more about if you can hit the ground running in React, and less so focused on CS fundamentals. I don’t think that’s good necessarily, but that was my experience. Good luck! Answer from Responsible_You_45 on reddit.com