React Native Developer Interview questions

Pratigya Luitel

Pratigya Luitel

— 2 min read
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React Native Developer Interview questions

Asking the correct questions is crucial. This is important for hiring managers looking at candidates or for anyone getting ready for a mobile engineering interview. React Native's interview process is unique. It combines native mobile architecture with JavaScript and TypeScript principles.

This guide organizes important React Native interview questions by skill level: Junior, Intermediate, and Senior/Architectural. 

Part 1: Core Concepts (Junior Level)

  1. What is the difference between a <View> and a <Text> component?

<View> is the fundamental layout block in React Native, equivalent to a <div> in web development. It supports Flexbox layouts, styling, touches, and accessibility controls to containerize other components.

<Text> is designed specifically for displaying text content. In React Native, text nodes must be wrapped inside a <Text> component to render properly; placing raw text inside a <View> will result in a runtime error.

  1. How do you apply styles to a component in React Native? 

Styles are applied using JavaScript style objects passed via the style prop.

  1. What basic component would you use to let a user tap something? 

Basic pressable elements include TouchableOpacity, TouchableHighlight, TouchableWithoutFeedback, or Button

  1. How do you navigate from one screen to another? 

Navigation is typically managed using React Navigation (using Stack or Tab navigators) or Expo Router (file-based routing). 

  1. How do you display a dynamic list of items? 

For dynamic, potentially long lists, use FlatList (or SectionList for categorized lists).

Part 2: Intermediate Concepts (Mid-Level) 

  1. What causes a React Native app to feel sluggish or drop frames, and how do you fix it? 
  2. How do you handle screen navigation and pass data between screens safely using React Navigation? 
  3. When would you choose Context API over a state management library like Zustand or Redux? 
  4. How do you handle offline capability and local data persistence in React Native? 
  5. How do you safely handle device permissions (like Camera or Location) on both iOS and Android? 

Part 3: Advanced Architecture & Native Modules (Senior Level)  

  1. An app is suffering from high memory usage and crashing with Out-Of-Memory (OOM) errors on low-end devices. How do you systematically profile and fix it? 
  2. What specific problems did JSI, Fabric, and TurboModules solve compared to the legacy bridge? 
  3. How do you design a scalable strategy for writing custom native modules, and when should you avoid writing them?
  4. How would you design an app architecture that supports a white-label or multi-tenant app with shared code, dynamic themes, and feature flags?  
  5. How do you design a robust CI/CD pipeline and deployment strategy for a React Native app with over 1 million active users?

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