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Clearwater Analytics (CWAN) Software Engineer Interview Questions

The questions to prepare for a Clearwater Analytics (CWAN) Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

50questions
~11htotal time
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1
CodingStart here. 31 questions · ~422 min
Implement Queue Using StacksEasy
Practice

Implement a FIFO queue using two stacks with amortized O(1) queue operations.

StackQueueArraysClearwater Analytics (CWAN)
Two Sum with TargetEasy
Practice

Use a hash map to find two array elements that sum to a target in O(n) time.

Hash TablesArraysStringsClearwater Analytics (CWAN)
Delimited Strings Repeated StringMedium
Practice

Scan delimited Clearwater Analytics records and return the first field encountered twice using a hash set.

string manipulationClearwater Analytics (CWAN)
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2
System Design9 questions · ~122 min
Array Rotation / URL ShorteningHard

Tests ability to handle array transformation and design a practical URL shortening approach.

designClearwater Analytics (CWAN)
Design a Grocery Delivery SystemHard

Assesses system design thinking across core components and tradeoffs.

system designClearwater Analytics (CWAN)
Full-Stack System DesignHard

Evaluates ability to structure an end-to-end system design with correct component responsibilities.

designClearwater Analytics (CWAN)
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3
Behavioral & Leadership8 questions · ~109 min
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4
More topics2 questions · ~27 min
Client-Side API CachingMedium

Assesses tradeoffs in caching strategy, consistency, and performance for Clearwater Analytics clients.

api designcachingClearwater Analytics (CWAN)
API and Platform Architecture ImpactMedium

Assesses ability to connect architecture decisions to outcomes in Clearwater Analytics systems.

architectureClearwater Analytics (CWAN)
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