Serious interview practice for experienced iOS engineers facing senior and staff loops.
Answer realistic prompts, inspect weaknesses, revise your answer, handle changed constraints and compare attempts.
$59once
The interview book and companion code to keep, plus 90 days of Guided Practice. This purchase does not start a subscription.
No account needed for the sample · Book edition 1.0, released 10 September 2026
Senior iOS answers rarely break on the first question. They break when the interviewer changes one fact: the user backgrounds the app halfway through an upload, strict concurrency checking in Swift 6 rejects the cache that worked last release, a list row loses its state because its identity was never stable, two screens refresh the same expired token at once. The memorised answer has nowhere to go. Start with the answer you least want an interviewer to examine.
You do not read the book cover to cover. Start with the diagnostic, pick a 7, 14 or 30-day route in chapter 3, and each route names the chapters it uses and the work it produces. The book covers the parts of a senior iOS loop where answers break under follow-up: Swift semantics and cost, concurrency and the path to Swift 6, SwiftUI state, architecture, offline and persistence, testing, performance and security. Then interview execution, scope beyond senior, twelve simulations and a field reference for the days you need one answer fast.
The book states its own limit plainly: it is preparation, never a guaranteed outcome. What it can do is make your improvement visible and your evidence easy for an interviewer to score.
Updates mean the current edition of the book and its companion files, for as long as Interview Runtime is operated.
The book gives you the models. Guided Practice makes you use them: you answer before you see the worked reasoning, the answer is kept, and the next attempt comes back with one constraint changed.
Your first attempt is saved before any coaching, so it stays an honest baseline.
Each answer is scored against the criteria written for that question. No AI model reads your answer, and the same answer always gets the same score.
The retry changes one fact, so a repeated answer does not pass for a repaired one.
The sample is the book as printed, not a summary. Judge the format and the voice before you buy.
No account needed
The table of contents as printed in the iOS edition, with page numbers.
The interview is close. Diagnose, repair the primary gap, run the closest simulation, retry the largest remaining failure.
The first week isolates technical failures. The second combines decisions under pressure.
Room for staff and lead scope: system design, leadership stories and full loop rehearsal.
Staff engineer · Tech lead · Author
15+ years building production mobile software, and 500+ technical interviews from the hiring side, from early career screens through staff and engineering manager loops. This book is written from that side of the table: what an interviewer can observe, score and defend in the debrief.
Why I wrote this book. I kept writing “no hire” for engineers who knew the right answer and lost it at the first follow-up. Most preparation teaches the first answer. This book, and the practice built on it, is for the second one.
What staysThe PDF and EPUB books and the companion code. Download the current edition any time.
What endsGuided Practice and the online reader.
Your attemptsReadable, read-only, for 12 months: sign in to browse them, export them or delete them. Then they are deleted.
What continuesGuided Practice, only if you choose the optional membership ($14.99 a month or $149 a year, renews until you cancel). Nothing renews unless you start it.
Interview Runtime: iOS Interview Preparation. Swift, concurrency, system design and mock interviews for senior and staff engineers.
Still deciding? Read the opening of the book first.
iOS Interview Training, $59 once: the interview book and companion code to keep, plus 90 days of Guided Practice. This purchase does not start a subscription. Or both platforms in the Mobile Bundle, $89.
iOS Interview Training$59 once · no subscription required
