Top 25
Prep plan
Updated weekly · Last refresh Oct 6

Groupon Backend Engineer Interview Questions

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

25questions
~4htotal time
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1
CodingStart here. 5 questions · ~44 min
Unique Triplets Sum to TargetMedium
Practice

Find all unique array triplets matching a target sum using sorting and two pointers.

ArraysSortingTwo PointersGroupon
Real-Time Sorting and FilteringMedium

Tests approaches for low-latency data access and query optimization.

data processingSortingfilteringGroupon
Optimizing Search with Data StructuresMedium

Tests ability to choose and implement data structures that improve search performance.

Data StructuresimplementationGroupon
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2
System Design9 questions · ~80 min
Handling Large Data with Limited MemoryHard

Evaluates system design choices for processing large datasets under memory constraints.

memory managementdata handlingGroupon
High-Concurrency Marketplace ComponentHard

Tests ability to design scalable components under heavy load and contention.

Groupon
Asynchronous Task Processing ServiceHard

Assesses system design skills for reliable async workflows and operational concerns.

Groupon
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3
Behavioral & Leadership9 questions · ~80 min
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4
More topics2 questions · ~18 min
Triplets and Data Structure ExecutionMedium

Assesses ability to choose appropriate data structures based on performance and constraints.

Trade-offsData StructuresGroupon
Memory Management ImplicationsMedium

Evaluates awareness of memory usage, performance trade-offs, and implementation details.

memory managementsystem designperformanceGroupon

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