iOS Interview Preparation

Comprehensive reference materials for iOS senior engineering interviews, organized by topic for quick lookup during pair programming sessions.

Quick Links by Category

Language Fundamentals

• Swift Language Features - Optionals, protocols, generics, closures, error handling, memory management, modern concurrency, Sendable protocol

UI Frameworks

• UIKit Mastery Guide - UIViewController lifecycle, Auto Layout, UITableView/UICollectionView optimization, animations
• SwiftUI State Management - @State, @Binding, @StateObject, @ObservedObject, @EnvironmentObject, @Observable (iOS 17+)

Architecture & Design

• iOS Architecture Patterns - MVC, MVVM, MVVM-C, VIPER, Clean Architecture, dependency injection
• Modern iOS Development - SwiftUI, Combine, async/await, modern app architecture, best practices

Backend & Data

• iOS Networking & Data Guide - URLSession, Combine networking, Codable, Core Data, persistence strategies, Privacy Manifest (iOS 17+)

Quality & Performance

• iOS Testing Guide - Unit testing, UI testing, XCTest, mocking, TDD strategies
• iOS Performance Optimization - Memory management, rendering, profiling tools, optimization techniques

Search Tips for Interviews

When you need quick answers during pair programming:

1. Use CMD+P in your IDE - Type filename keywords (e.g., “swift”, “testing”, “architecture”)
2. Use CMD+F within files - Search for specific terms once file is open
3. Check Table of Contents - Each guide has a comprehensive TOC at the top
4. Company prep first - Review company-specific guide before the interview

Common Interview Topics Quick Reference

Files in This Directory

interview-prep/
├── README.md (this file)
├── ios_architecture_patterns.md
├── ios_networking_data_guide.md
├── ios_performance_optimization.md
├── ios_testing_guide.md
├── modern_ios_development.md
├── swift_language_features.md
├── swiftui_state_management_guide.md
└── uikit_mastery_guide.md

Good luck with your interviews!