Mobile Interview Guide
Work in Progress
This section is currently in beta. Content is being expanded with additional design questions, platform-specific guides, and mobile architecture patterns.
Mobile engineering interviews assess the ability to build native iOS and Android applications with correct architecture, optimal performance, and offline capability.
Interview Categories
| Category | Focus Areas |
|---|---|
| Mobile System Design | Designing mobile applications at scale |
| Platform Deep Dive | iOS or Android platform-specific knowledge |
| Coding | Feature implementation and debugging |
Topics
Offline-First Architecture
Architecture patterns for applications that function without network connectivity.
Design Instagram (Mobile)
Mobile architecture for photo-sharing applications.
Design Uber (Mobile)
Real-time location tracking and ride-sharing architecture.
Design a Messaging App
Real-time messaging with offline support and media handling.
Design a Music Streaming App
Audio streaming, offline playback, and background audio.
Mobile-Specific Topics
| Topic | Description |
|---|---|
| Battery Optimization | Reducing power consumption in background tasks and location services |
| Network Handling | Managing connectivity changes, retry logic, and offline queues |
| Background Tasks | Executing work when the application is not in the foreground |
| Push Notifications | Remote notification delivery and handling |
| Local Storage | Persistent data storage using SQLite, Core Data, Room, or Realm |
| App Lifecycle | Managing state across foreground, background, and terminated states |