Senior SDE Interview Questions at Apple
7 real Senior SDE interview questions asked at Apple. Covers Technical, HR, System Design rounds. Sourced from engineers who cleared the loop.
Interview Signals — What Apple Asks Senior SDEs
All Senior SDE Questions Asked at Apple
Design an offline-first note-taking app that syncs across a phone, tablet, and laptop, resolving conflicts when the same note was edited on two devices while offline.
An iOS app's scroll performance drops to visibly janky frame rates on a list with complex cells. Walk through your process for diagnosing whether the bottleneck is layout, rendering, or data processing.
How would you design a feature that needs user location data for a core function, while minimizing what leaves the device and remains fully functional if the user denies location permission?
Two data centers each think they're the primary for a user's data after a network partition heals — a classic split-brain. How would you design the system to detect and resolve this safely?
An app's cold launch time regressed from 800ms to 1.4s after a release. What's your systematic approach to finding the regression before assuming which commit caused it?
In Swift, what is the difference between DispatchQueue.main.async and DispatchQueue.main.sync, and why can calling .sync from the main thread deadlock your app?
Apple products are known for polish over speed of delivery. Tell me about a time you pushed back on a deadline because the work wasn't ready, and how that conversation went.
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