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iOS System Design

2 years ago

How would you go about replicating the iOS calendar's UI and customizing the collection view's cell layout?

iOS Engineer

DoorDash

Booking.com

Shopee

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2 years ago

iOS System Design

2 years ago

Propose an architecture for a communication app on the iOS platform.

iOS Engineer

DoorDash

Apple

Salesforce

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2 years ago

Technical Knowledge

2 years ago

What makes OperationQueue different from GCD?

iOS Engineer

DoorDash

Twitch

Stitch Fix

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2 years ago

iOS System Design

3 years ago

Design a clock app for the iPhone

iOS Engineer

DoorDash

Glovo

CRED

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3 years ago

Technical Knowledge

3 years ago

Discuss the navigation flow between view controllers within an iOS application.

iOS Engineer

DoorDash

Hopper

Yahoo

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3 years ago

Technical Knowledge

3 years ago

How does memory managemetn wrok in iOS? Talk about how Automatic Reference Counting (ARC) operates?

iOS Engineer

DoorDash

Pandora

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3 years ago

Technical Knowledge

3 years ago

What's async/await? When would you use it?

iOS Engineer

DoorDash

Ola

Headspace

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3 years ago

iOS System Design

4 years ago

What strategies would you employ to build a photo sharing app that can accommodate millions of users?

iOS Engineer

DoorDash

Flipkart

Snap

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4 years ago

iOS System Design

4 years ago

Let's put your skills to the test: rotate a given square matrix to the right without creating a new matrix.

iOS Engineer

DoorDash

Transferwise

Instacart

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4 years ago

iOS System Design

4 years ago

Can you describe the approach you would take when designing Spotify's iOS app?

iOS Engineer

DoorDash

Grab

Snap

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4 years ago

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

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