Design a Centralized Log Ingestion and Search Platform
Design a multi-tenant platform that durably ingests structured application logs and makes recent events searchable with explicit freshness and replay semantics.
Open practiceApple interview practice
Practice from 21 Apple-tagged public coding problems, organized only by the stage, topic, difficulty, and recency metadata FastPrep can verify. The broader public catalog also includes 10 system-design exercises.
OA practice path
Build a timed implementation rhythm from prompt to edge cases. Problems are ranked by repeated public catalog sightings.
| Company | Problem | Difficulty | Public evidence | Action |
|---|---|---|---|---|
APApple | Ignore SectionsArraySimulation | Easy | 1 public reportLast reported Mar 2024 | Practice |
Phone practice path
Practice solving while explaining assumptions, tradeoffs, and complexity. Problems are ranked by repeated public catalog sightings.
13 Apple-tagged Phone Screen problems available.
| Company | Problem | Difficulty | Public evidence | Action |
|---|---|---|---|---|
APApple | Sparse Matrix MultiplicationArrayMatrix | Medium | 1 public reportLast reported Aug 2026 | Practice |
APApple | Count Islands in a Binary GridArrayMatrix | Medium | 1 public reportLast reported Aug 2026 | Practice |
APApple | Design Hash MapHash TableDesign | Easy | 1 public reportLast reported Aug 2026 | Practice |
APApple | Implement Hit CounterQueueDesign | Medium | 1 public reportLast reported Aug 2026 | Practice |
APApple | HTTP Status Log SummaryStringParsing | Medium | 1 public reportLast reported Jul 2026 | Practice |
APApple | Insert IntervalArrayIntervals | Medium | 1 public reportLast reported Jul 2026 | Practice |
APApple | Group Transitive String AliasesGraphUnion Find | Medium | 1 public reportLast reported Jul 2026 | Practice |
APApple | Design Task ManagerDesignHash Table | Medium | 1 public reportLast reported Jul 2026 | Practice |
APApple | Unit Conversion IIArrayGraph | Medium | 1 public reportLast reported Jul 2026 | Practice |
APApple | Two-Color an Undirected GraphGraphDepth-First Search | Medium | 1 public reportLast reported Jul 2026 | Practice |
APApple | Word Search IITrieBacktracking | Hard | 1 public reportLast reported Jul 2026 | Practice |
APApple | Phone DirectoryHash TableDesign | Medium | 1 public reportLast reported Jul 2026 | Practice |
APApple | Validate Completed SudokuMatrixHash Table | Medium | 1 public reportLast reported Jun 2026 | Practice |
Onsite practice path
Practice complete solutions and defend the choices behind them. Problems are ranked by repeated public catalog sightings.
| Company | Problem | Difficulty | Public evidence | Action |
|---|---|---|---|---|
APApple | Binary Tree Nodes at Distance KTreeBreadth-First Search | Medium | 1 public reportLast reported Aug 2026 | Practice |
APApple | BST to Sorted Circular Doubly Linked ListTreeLinked List | Medium | 1 public reportLast reported Aug 2026 | Practice |
APApple | Classify Natural-Month Distance Between DatesParsingMath | Medium | 1 public reportLast reported Aug 2026 | Practice |
APApple | Copy a Random-Pointer List in Constant SpaceLinked ListHash Table | Medium | 1 public reportLast reported Aug 2026 | Practice |
APApple | Top K Closest Pairs in a Sorted ArrayArraySorting | Medium | 1 public reportLast reported Aug 2026 | Practice |
APApple | Product Except Self With ZerosArrayPrefix Sum | Medium | 1 public reportLast reported Jul 2026 | Practice |
APApple | Subset Sum PossibleDynamic ProgrammingArray | Medium | 1 public reportLast reported Jul 2026 | Practice |
Current official guidance
Apple's Software and Services careers page distinguishes areas such as apps, cloud infrastructure, operating systems, and software quality. It is role context, not a published universal interview sequence.
Primary sources checked .
01 · Preparation plan
Apple's public practice inventory spans coding fundamentals and service design. Prepare for the technical work relevant to your role without presenting the page as a behavioral, hardware, or universal full-loop guide. This is a suggested practice sequence, not the employer's interview process. Your invitation and recruiter guidance remain the source of truth.
Use graph, tree, or stateful data-structure practice to connect the chosen representation to a clear correctness argument.
When a relevant design exercise is available, use synchronization, storage, or event collection to practice consistency and failure handling.
Turn the job description and recruiter guidance into a short technical study plan; a broad company label is not a substitute for team requirements.
02 · Broader technical practice
These public Apple-tagged exercises cover additional technical formats. They are included only when a verified catalog record and a crawlable practice page both exist.
Design a multi-tenant platform that durably ingests structured application logs and makes recent events searchable with explicit freshness and replay semantics.
Open practiceDesign a configuration registry with immutable versions, an explicit current version, and safe rollback.
Open practiceDesign a multi-tenant distributed limiter that smooths priority and regular traffic under versioned quotas, retries, and partial failure.
Open practiceDesign responsive cross-device wallpaper state propagation and constrained resumable asset delivery.
Open practiceDesign a reliable, privacy-aware API that accepts mobile application events despite retries, offline clients, and evolving schemas.
Open practiceDesign a trustworthy dashboard platform that derives versioned metrics from event data and serves fast, reproducible slices.
Open practiceDesign a secure, resumable pipeline that moves a 200 TB media corpus from on-premises storage into cloud object storage and continuously feeds a cloud GPU training cluster.
Open practiceDesign photo upload, download, multi-device synchronization, and hot/cold storage with metadata separated from immutable blobs.
Open practiceDesign APIs and storage for creating bounded elections, accepting one eligible vote per voter, and publishing trustworthy results.
Open practiceDesign a bounded-memory service that transforms a 300 GB JSON array on one 16 GiB, 8-core worker with durable job control and monitoring.
Open practice03 · Evidence boundary
It means practicing transferable implementation, testing, and technical reasoning with public catalog assets FastPrep tags to Apple. It does not mean FastPrep has access to the company's assessments or any private interview bank.
Repeated public sightings and last-reported dates can help you prioritize practice, but they cannot predict the questions, format, or platform in a specific interview.
04 · Plain answers
This page owns technical-practice intent for Apple. Hiring activity, timelines, and market signals remain on the separate hiring-insights page.
No. The page is limited to technical practice supported by 21 public coding problems and 10 system-design exercises. It is not a behavioral-question bank, hardware-interview guide, or complete process map. Use your team's role description and invitation to choose the relevant exercises.
No. FastPrep is an independent interview-preparation product and is not affiliated with Apple. The page uses FastPrep's public practice catalog and does not claim official, private, leaked, or proprietary employer questions.
Stage labels come from FastPrep's public problem metadata. A problem can carry more than one reported stage, and hiring processes can change by role, level, location, and date. Treat the labels as preparation context, not a guarantee.
Start with the stage named in your invitation or recruiter message. If no stage is known, use the largest available set to build general problem-solving fluency, then rehearse explanation and testing separately.
No. Public catalog counts, stage tags, and last-reported dates can help prioritize practice, but they cannot predict a specific interview's questions, sequence, timing, or platform.
Your next stage, made concrete
Start with the stage named in your invitation, then use public evidence as context—not as a promise of what you will be asked.
Open the practice set