Apple Software Engineer System Design Interview Questions

Practice 15 real System Design interview questions for Software Engineer roles at Apple.

15 Questions 1 Company08.09.2026
Showing 15 results
Role
Apple logo
Apple
Medium
Software Engineer

Design a Distributed Token-Bucket Rate Limiter

Design a distributed rate limiter using token buckets. Each user or API key has a bucket with a fixed capacity. Tokens refill at a configured rate, an...

System Design
1
0
14 people solved
Aug 9, 2026
Apple logo
Apple
Medium
Software Engineer

Design Cloud Photo Storage and Multi-Device Sync

Design a cloud photo-storage service with upload, download, and multi-device synchronization. Store photo bytes separately from searchable metadata. S...

System Design
1
0
12 people solved
Aug 9, 2026
Apple logo
Apple
Medium
Software Engineer

Design a Centralized Logging System

Design a Centralized Logging System Design a system that collects application logs from a large fleet of microservice instances and makes them durable...

System Design
33
0
387 people solved
Jun 30, 2026
Apple logo
Apple
Medium
Software Engineer

Object-Oriented Design: Hotel Room Booking System

Object-Oriented Design: Hotel Room Booking System Design the object model and core service for a hotel room booking system. The service must let a cli...

System Design
9
0
123 people solved
Jun 30, 2026
Apple logo
Apple
Easy
Software EngineerSenior+

Design APIs for a Voting System

Design APIs for a Voting System Design the APIs and core data model for a voting system. Begin by clarifying the type of vote: identified or anonymous...

System Design
2
0
33 people solved
May 3, 2026
Apple logo
Apple
Hard
Software EngineerNew Grad Locked

Design a smartwatch sensor subsystem

This question evaluates system-level engineering skills for designing a smartwatch sensing subsystem, including sensor selection, trade-offs among acc...

System Design
22
1
189 people solved
Feb 25, 2026
Apple logo
Apple
Medium
Software Engineer Locked

Design ad click aggregator and file sync service

This question evaluates system design competencies in building scalable, reliable distributed services—covering high-throughput event ingestion and ag...

System Design
23
0
255 people solved
Jan 22, 2026
Apple logo
Apple
Hard
Software Engineer

Implement a robust REST API method

Implement a robust REST API method Design and implement a REST API method to create a resource with idempotency Context You are building a create endp...

System Design
23
0
181 people solved
Jul 15, 2025
Apple logo
Apple
Medium
Software Engineer

Implement a robust socket message reader

Implement Message Framing Readers for TCP Sockets Context You are given a TCP socket. Each call to recv(k) may return any number of bytes up to k; in ...

System Design
6
0
118 people solved
Sep 6, 2025
Apple logo
Apple
Hard
Software Engineer

Design and scale a Yelp-like platform

System Design: Yelp-like Local-Business Reviews Platform + URL Shortener You are designing two systems: 1) A Yelp-like local-business reviews platform...

System Design
8
0
107 people solved
Sep 6, 2025
Apple logo
Apple
Medium
Software EngineerSenior+

Design Disk-Based Inventory Serving

Design software for a machine that has no SSD storage and only a small amount of RAM. The machine must service inventory requests using spinning disks...

System Design
7
0
50 people solved
Oct 28, 2025
Apple logo
Apple
Medium
Software EngineerSenior+

Scale Digit-Square Convergence Requests

Design a service that receives very high request volume for the digit-square convergence operation. For each request, the input is a positive integer ...

System Design
3
0
34 people solved
Oct 28, 2025
Apple logo
Apple
Medium
Software Engineer Locked

Design an Accurate Click Aggregator

This question evaluates a candidate's ability to design reliable, high-throughput event processing and analytics systems, emphasizing data modeling, i...

System Design
9
0
78 people solved
Dec 22, 2025
Apple logo
Apple
Hard
Software Engineer

Design video platform and catalog system

System Design: Two Independent Systems You are asked to design two large-scale systems. For each system, provide: - Scope and key requirements - Exter...

System Design
9
0
121 people solved
Sep 6, 2025
Apple logo
Apple
Hard
Software Engineer

Migrate a monolithic wallet to microservices

System Design: Migrating a Monolithic Digital Wallet (Apple Cash–like) to Microservices Context You operate a high-scale consumer digital wallet and p...

System Design
6
0
86 people solved
Sep 6, 2025

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