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Applovin Software Engineer Interview Questions

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

50questions
~8htotal time
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1
CodingStart here. 28 questions · ~285 min
Count Islands in a GridEasy
Practice

Use DFS on a matrix-as-graph to count connected components of land cells.

MatrixGraphsAApplovin
Linked List ReversalEasy
Practice

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

RecursionLinked ListsArraysAApplovin
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2
System Design4 questions · ~41 min
Design an LRU CacheHard

Assesses system design tradeoffs for eviction, capacity, and performance.

AApplovin
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3
Security & Infrastructure6 questions · ~61 min
Linux, Networking, DevOpsMedium

Evaluates breadth of infrastructure skills relevant to building and operating systems.

NetworkingDevOpslinuxAApplovin
Linux Networking SetupMedium

Assesses practical Linux networking knowledge and troubleshooting ability.

NetworkinglinuxAApplovin
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4
Behavioral & Leadership8 questions · ~81 min
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5
More topics4 questions · ~41 min
Query Anagrams from StringsMedium

Evaluates data modeling and efficient grouping for anagram queries.

string manipulationAApplovin
Optimize Grouping for Large DataHard

Evaluates pipeline performance strategies for large-scale grouping workloads.

AApplovin
iOS Test AutomationMedium

Assesses testing strategy, tooling choices, and coverage planning for iOS development.

test automationAApplovin
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Calculate 30-Day User RetentionHard
Practice
Practice drill

Use CTEs, joins, and date filtering to calculate 30-day retention by signup cohort from login and feature usage data.

Window FunctionsDate FunctionsAggregationsCurefitReachMobiIndeed
Second Highest Trader SalaryEasy
Practice
Practice drill

Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.

SubqueriesRankingSortingeClinicalWorksInformaticaSpectraforce Technologies
SQL for Sales and LogsHard
Practice
Practice drill

Aggregate completed Shopify sales and admin logins by merchant and month using CTEs, LEFT JOIN, and conditional logic.

case studysqlShopify
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.