Apple Interview Questions

Review this list of 172 Apple interview questions and answers verified by hiring managers and candidates.

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Asked at Apple • 3 years ago
Explain the filter function.
Software Engineer
Data Structures & Algorithms
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"filter function usually exists in some high level programming that adopt FP paradigm. It taks a sequence of items and a predicate function, and returns (conceptually) a subset of the items that satisfy the predicate. Adopt this kind of operation (filter, map, reduce, take, pairwise ...) can help writting cleaner code, and reduce the usage of mutable part in the program, lower the possibility of making human mistake. Take Python for example (although const-ness is not exists in Python), assu"
Weida H. - "filter function usually exists in some high level programming that adopt FP paradigm. It taks a sequence of items and a predicate function, and returns (conceptually) a subset of the items that satisfy the predicate. Adopt this kind of operation (filter, map, reduce, take, pairwise ...) can help writting cleaner code, and reduce the usage of mutable part in the program, lower the possibility of making human mistake. Take Python for example (although const-ness is not exists in Python), assu"See full answer
Software Engineer
Data Structures & Algorithms
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Asked at Apple, NASA • 7 months ago
How does malware achieve persistence on unix machines?
Security Engineer
Technical
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Security Engineer
Technical
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Asked at Apple, Department of Defense • 7 months ago
What is penetration testing and why do we need it?
Security Engineer
Technical
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Security Engineer
Technical
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Asked at Apple • 5 years ago
Design a port in San Francisco.
Product Design
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Product Design
Asked at Apple • 3 years ago
Find the maximum product subarray in a given array.
Software Engineer
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Software Engineer

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Asked at Apple • 2 months ago
How would you work with cost management or finance to manage host cost effectively for a large observability system?
Engineering Manager
Analytical
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Engineering Manager
Analytical
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Asked at Apple • 2 months ago
Design a storage system for large block data, where keys can be up to about 1K and values can be up to about 300K.
Engineering Manager
System Design
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Engineering Manager
System Design
Asked at Apple • 5 months ago
How would you go about scoping improvements to the quality of a machine learning model?
Technical Program Manager
Analytical
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Technical Program Manager
Analytical
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Asked at Apple • 6 months ago
Tell me about a time you built a product involving AI inference.
Product Manager
Artificial Intelligence
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Product Manager
Artificial Intelligence
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Asked at Apple • 5 months ago
How do you define quality in an ML context?
Technical Program Manager
Concept
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Technical Program Manager
Concept
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Asked at Apple • 2 months ago
How would you design the new storage system, especially the partitioning, as volume grows from millions of records to hundreds of millions or billions?
Engineering Manager
Data Modeling
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Engineering Manager
Data Modeling
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Asked at Apple • 2 months ago
We are replacing an old metrics storage system with scaling issues. How would you migrate the data without interrupting live traffic or losing any internal data?
Engineering Manager
System Design
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Engineering Manager
System Design
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