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OfferUp Software Engineer Interview Questions

The questions to prepare for a OfferUp Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

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Explaining Big O ComplexityEasy

Assesses whether you can accurately analyze and communicate algorithmic complexity.

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Optimizing Time Complexity
Hard

Assesses your ability to improve algorithmic efficiency and justify complexity improvements.

optimization
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Merge Two Sorted Linked Lists
Easy

Tests linked list manipulation and correctness of iterative or recursive merging.

CodingLinked ListsTwo Pointers
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Custom Data Structure Implementation
Medium

Assesses your ability to design and implement reusable abstractions with correct behavior.

iteratorsLinked Lists
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Disagreeing With a Manager's Direction
Medium

Tests conflict resolution and disagree-and-commit: how you challenge upward, communicate clearly, and still own execution after a decision.

Conflict ResolutionCommunicationLeadership
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Database Architecture Trade-OffsHard

Evaluates your ability to choose and justify data storage approaches under demanding workloads.

Trade-offsdatabase architecture
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Designing a Local Marketplace Feature
Hard

Assesses system design skills for product features in a high-scale local marketplace.

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High Availability in Distributed Systems
Medium

Tests system reliability thinking, redundancy, and failure handling strategies.

distributed systemshigh availability
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