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iOS System Design

4 years ago

Propose a design for a real-time social newsfeed in an iOS app.

iOS Engineer

Duolingo

PayPal

Indeed.com

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4 years ago

Technical Knowledge

4 years ago

In iOS development, can you explain the concept of threading? Additionally, identify the different thread types available within iOS, and explain the circumstances in which each type is most applicable.

iOS Engineer

Duolingo

Myntra

DocuSign

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4 years ago

Technical Knowledge

4 years ago

Discuss the MVVM (Model-View-ViewModel) design pattern and its pros and cons

iOS Engineer

Duolingo

Clubhouse

Slack

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4 years ago

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^*All interview questions are submitted by recent Duolingo iOS Engineer candidates, labelled and categorized by Prepfully, and then published after being verified by iOS Engineers at Duolingo.

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