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World Wide Technology Interview Questions

The questions to prepare for World Wide Technology interviews, across all roles. Questions from real interview reports rank first. Updated weekly.

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1
SQL & Data ManipulationStart here. 5 questions + 2 drills · ~70 min
2
Coding5 questions · ~50 min
Reverse a StringEasy
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Reverse a string using a two-pointer swap approach and explain the trade-off between in-place and copied results.

RecursionArraysStringsWorld Wide Technology
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3
Pipelines5 questions · ~50 min
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityWorld Wide Technology
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4
Execution5 questions · ~50 min
Recover a Slipping ProjectMedium

Explain how you would diagnose and recover a project that is falling behind schedule without losing stakeholder trust.

Success CriteriaRoadmappingRisk AssessmentWorld Wide Technology
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5
Metrics5 questions · ~50 min
Define Success for a ProjectEasy

Define what success means for a project using clear KPIs, a north star, and supporting metrics.

KPIsSuccess CriteriaDiagnosisWorld Wide Technology
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6
Machine Learning4 questions · ~40 min
Supervised vs Unsupervised LearningEasy

Explain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.

Unsupervised LearningFeature EngineeringBias-Variance TradeoffWorld Wide Technology
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7
More topics21 questions · ~210 min
Tell Me About YourselfEasy

Tests your ability to deliver a clear, relevant introduction tailored to the role at Aqr.

Competitive AnalysisGo-to-MarketWorld Wide Technology
Design Feature Drift Monitoring SystemHard

Design a production ranking system with robust feature drift monitoring across batch and real-time features at high QPS.

Feature StoreFeature DriftModel ServingWorld Wide Technology
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The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.