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AI for Senior iOS Engineers: The Interview Guide (2026 Edition)
120 Senior and Architect-Level Interview Questions with Detailed Answers
This book is 100% completeLast updated on 2026-10-24
The senior iOS interview now has an AI round. 120 questions with detailed, senior-level answers on Foundation Models, Private Cloud Compute, Core AI, cloud LLMs, RAG and AI system design, current for iOS 27 and WWDC26.
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About
About the Book
AI questions are now part of almost every senior iOS interview loop. This guide prepares experienced iOS engineers (Senior, Staff, Lead and Architect) for them, with 120 interview questions and detailed, interview-ready answers. Written by an iOS engineer with 12+ years of Swift and Objective-C experience. It is current as of October 2026: iOS 27, Xcode 27, Swift 6.2+ and the WWDC26 AI frameworks. What's inside (104 pages, 11 sections): - AI and LLM fundamentals for iOS: tokens, sampling, embeddings, hallucinations, fine-tuning vs RAG, quantization, on-device vs cloud - Apple's Foundation Models framework: guided generation with @Generable, streaming, tool calling, context management, errors, and the iOS 27 additions (Private Cloud Compute, Dynamic Profiles, image input) - Core ML, Core AI and custom models: conversion, compression, Neural Engine, shipping large models, MLX - Vision, Speech, Translation and Natural Language, including SpeechAnalyzer and visual intelligence - App Intents, Siri and Apple Intelligence: entities, assistant schemas, semantic Spotlight - Cloud LLMs (Claude, GPT, Gemini): secure gateways, App Attest, streaming, cost and reliability - RAG and on-device search: chunking, vector search, SpotlightSearchTool, citations - AI system design: a 7-step framework plus 8 complete designs (banking/telecom assistant, smart search, in-app agents and more) - Evaluation, safety and privacy: the Evaluations framework, LLM-as-judge, prompt injection, consent - AI-era engineering leadership: coding-agent policy, AI roadmaps, hiring, STAR stories - Architect-level scenarios and 2 full mock interview sets Every answer includes a clear concept explanation, Swift 6 code or architecture diagrams, trade-off tables (the "senior judgment" interviewers look for), and an Interview Tip line you can say out loud. Also included: a clickable table of contents, PDF bookmarks for every question, a topic index, and 3-week and 5-day study plans. Download the free sample to read all of Section 1 before you buy. Buyers get every future update of the 2026 edition free.
Author
About the Author
Puneet Shah
Puneet Shah is a senior iOS engineer with 12+ years of experience building production apps in Swift and Objective-C. He currently works at a leading MNC on a large-scale consumer iOS app. He writes practical, up-to-date interview guides for mobile engineers, focused on what interviewers ask in senior, lead and architect rounds. His books cover Swift 6, SwiftUI, Objective-C, mobile system design and, most recently, building AI features on Apple platforms.
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