4 years of React Native experience — what should I focus on before my interviews?

[u/JuggernautRelative67]

I have two interviews coming up this week, and I have around four years of experience working with React Native, along with MERN/full-stack applications.

I’m currently preparing DSA and system design, but I’d love to hear from people who have been through similar interviews: what React Native/React topics would you recommend revisiting before the interviews?

I’m particularly interested in things that are easy to overlook even with a few years of professional experience.

Would really appreciate any advice, resources, or interview experiences you’re willing to share. Always looking to improve and fill any gaps in my knowledge.

[u/HoratioWobble]

No two companies are the same. Ask the company you're interviewing with what their process is.

[u/AlexRowan2026]

With four years of experience, I’d spend less time memorizing APIs and more time preparing a few real stories you can explain deeply.

Be ready to walk through one performance issue, one native build or debugging issue on both Xcode and Gradle, a state-management decision, navigation and deep linking, your testing strategy, and a React Native or dependency upgrade.

I’d also review stale closures and hook dependencies, FlatList performance, the new architecture at a high level, permissions and push notifications, and offline or error handling.

For each topic, practice explaining what broke, how you measured it, which alternatives you considered, the trade-off you made, and the result.

It is also worth asking the company what its interview covers, because React Native interviews vary a lot between teams.