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Updated weekly · Last refresh Nov 11

Uber Frontend Engineer Interview Questions

The questions to prepare for a Uber Frontend Engineer interview. Questions from real interview reports rank first. Updated daily.

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1
CodingStart here. 13 questions · ~139 min
Synchronous vs Asynchronous ProgrammingMedium

Explain the differences between synchronous and asynchronous programming paradigms.

Uber
Classify Nested Pair Iteration ComplexityMedium
Practice

Determine time and space complexity in Big O notation and justify the reasoning from an algorithm’s structure.

code analysisAlgorithmsUber
Callbacks and setTimeout BehaviorMedium

Assesses understanding of asynchronous execution and timing behavior in the browser.

javascriptUber
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2
System Design5 questions · ~54 min
UI System Design ScopeMedium

Explain whether an Uber UI system design round requires implementation or high-level architecture discussion.

designarchitecture patternsUber
Accessibility and Performance for UIHard

Explain how to build UI components that meet accessibility standards without sacrificing runtime performance.

latencyaccessibilityclient-sideUber
Multi-Level Parking Lot SystemHard

Design a multi-level parking lot with vehicle-specific slots, parking, unparking, and slot-location operations.

class structureparking systemdesignUber
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3
More topics3 questions · ~32 min
Prevent Memory Leaks in SPAHard

Tests how to prevent and diagnose SPA memory leaks caused by retained listeners, timers, subscriptions, DOM references, and async work.

memory leakjavascriptWeb PlatformUber
Async Completion During Heavy AnimationMedium

Evaluates understanding of browser event handling and execution timing under load.

Uber
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