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aPriori Interview Questions

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

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~7htotal time
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1
SQL & Data ManipulationStart here. 5 questions + 3 drills · ~72 min
2
Coding15 questions · ~125 min
Systematic Debugging for Complex BugsEasy

Explain a structured debugging approach: reproduce, isolate, inspect signals, test hypotheses, and verify the fix.

Hash TablesSearchingaaPriori
Optimizing Web App PerformanceMedium

Explain how to improve web app performance using profiling, caching, code-level optimization, and measurement-driven validation.

Hash TablesArraysSortingaaPriori
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3
Technical Fundamentals6 questions · ~50 min
Version Control Tools and RationaleEasy

Tests collaboration practices and understanding of version control workflows.

Stakeholder ManagementCommunicationOwnershipaaPriori
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4
Execution7 questions · ~58 min
Unit Testing and TDDEasy

Tests your ability to build reliable software with disciplined testing practices.

Trade-offsToolsQualityaaPriori
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5
System Design8 questions · ~67 min
Designing Scalable ArchitectureHard

Evaluates your ability to design systems that scale reliably under growth and changing requirements.

system designscalable architectureaaPriori
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6
Behavioral & Leadership6 questions · ~50 min
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7
More topics3 questions · ~25 min
Large-Scale Data Processing DesignHard

Tests ability to design pipelines for throughput, reliability, and scalability.

InfrastructureBatch ProcessingData ModelingaaPriori
Creating a Software RoadmapMedium

Assesses how you plan work, align with goals, and sequence delivery for maximum impact.

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