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Updated weekly · Last refresh Sep 15

Boomerang Interview Questions

The questions to prepare for Boomerang interviews, across all roles. Questions from real interview reports rank first. Updated daily.

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1
CodingStart here. 9 questions · ~99 min
Linked List ReversalEasy
Practice

Reverse a singly linked list in-place using iterative pointer manipulation.

RecursionLinked ListsArraysBoomerang
Implement Binary Search AlgorithmEasy
Practice

Write a binary search function to find a target value in a sorted array.

SearchingBoomerang
Merge Two Sorted ArraysEasy
Practice

Merge two sorted arrays into one sorted array using a two-pointer linear scan.

ArraysSortingTwo PointersBoomerang
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2
Execution4 questions · ~44 min
Choose Monolith or MicroservicesMedium

Evaluate the execution trade-offs between monoliths and microservices and explain how you would choose the right approach.

Trade-offsRisk AssessmentScope ManagementBoomerang
Handling Millions of Concurrent UsersHard

Tests large-scale web architecture, performance, and reliability planning.

Trade-offsRisk AssessmentScope ManagementBoomerang
Designing a URL ShortenerHard

Tests system design skills for a high-traffic URL shortening-like service.

Launch PlanningTrade-offsRoadmappingBoomerang
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3
Behavioral & Leadership10 questions · ~110 min
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4
More topics2 questions · ~22 min
SQL vs NoSQL DifferencesMedium

Tests database selection knowledge and tradeoff understanding.

JoinsData WranglingBoomerang
Database Design ConsiderationsMedium

Tests ability to make sound database design choices for reliability, performance, and maintainability.

DependenciesData ModelingQualityBoomerang
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 25 questions plus 3 hands-on drills to finish this plan.