Top 40
Prep plan
Updated weekly · Last refresh Aug 30

Root Software Engineer Interview Questions

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

40questions
~6htotal time
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1
CodingStart here. 12 questions · ~116 min
Check Palindrome StringEasy
Practice

Use a two-pointer string scan to determine whether a string reads the same forward and backward.

RecursionStringsData StructuresRoot
Reverse a Linked ListEasy
Practice

Reverse a singly linked list in place using pointer manipulation.

RecursionLinked ListsRoot
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2
Execution7 questions · ~67 min
Handle Scope Changes Mid-DevelopmentMedium

Explain how you manage scope changes during development without losing delivery control, stakeholder alignment, or product quality.

AgileScope ManagementProject ManagementRoot
Write Unit Tests ProcessEasy

Tests ability to design testable code and build reliable unit test coverage.

Risk AssessmentQualityRoot
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3
SQL & Data Manipulation3 questions + 3 drills · ~59 min
4
Security & Infrastructure5 questions · ~48 min
Secure Monolith vs Microservices MigrationMedium

Evaluate security and operational trade-offs when moving from a monolith to microservices handling sensitive customer data.

InfrastructureQualityRoot
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5
Behavioral & Leadership10 questions · ~96 min
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6
More topics3 questions · ~29 min
Real-Time Data Processing DesignHard

Tests system design skills for real-time pipelines and responsiveness in mobile scenarios.

InfrastructureStream ProcessingOrchestrationRoot
Architectural Problem for ThroughputHard

Tests end-to-end architecture thinking across clients, services, and external integrations.

ML RankingRecommendation SystemsRoot
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The finish line: interview-readyComplete all 40 questions plus 3 hands-on drills to finish this plan.