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Cracking the iOS Interview

A Deep, Practical Guide for iOS Developers

Most iOS interview preparation focuses on memorizing APIs or rehearsing isolated questions.
This book focuses on something interviewers care far more about: how you think, reason, and explain decisions.

Cracking the iOS Interview is written for iOS developers who already build real applications but want to perform better in mid to senior-level interviews.

What This Book Is About

This book is a practical guide to the most commonly discussed iOS interview topics — explained from the perspective of real interview conversations.

Instead of listing answers, it focuses on:

reasoning through trade-offs
explaining architectural decisions
handling follow-up questions calmly
communicating like a senior iOS engineer

From memory management and Copy-on-Write to Swift Concurrency and architecture, each chapter is designed to help you articulate why you would choose a particular approach, not just what it does.

What Makes This Book Different

Emphasizes mental models, not memorization
Covers follow-up questions interviewers actually ask
Written from real production and interview experience
No beginner tutorials or framework walkthroughs
Focused on clarity, structure, and decision-making

From Chapter 7 onward, chapters include concise follow-up Q&A written in a spoken style, making it easier to respond naturally in live interviews.

Who This Book Is For

This book is intended for:

iOS developers with 2+ years of experience
Engineers preparing for mid to senior iOS roles
Candidates who struggle to explain reasoning clearly
Developers targeting product-based companies

If you are new to iOS or still learning Swift fundamentals, this book may not be the right fit yet.

How to Read This Book

You can read the book end-to-end or treat it as a reference while preparing for interviews.
Each chapter is self-contained and focused on a single interview-relevant concept.

The goal is not to help you “crack” one interview, but to help you build a repeatable way of thinking that scales across interviews.

Authors

Kiran Jote
Lead iOS Developer, Expedia

Akash Sharma
Lead iOS Developer, Google

About This Edition

This book is written in Markdown and published via Leanpub.
Minor updates and clarifications may be added over time based on reader feedback.

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