Riot Games Data Scientist Interview Questions

The questions to prepare for a Riot Games Data Scientist interview. Questions from real interview reports rank first. Updated daily.

6questions

~1htotal time

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SQL & Data ManipulationStart here. 1 question + 2 drills · ~30 min

Calculate each player's rolling 10-game averages for points, rebounds, and assists using PostgreSQL window functions.

Calculate each product-region's rolling 7-day average sales using daily aggregation and calendar-aware windowing.

Calculate each user's 7-day activity average and rank users within their cohort using PostgreSQL window functions.

A/B Testing & Experimentation2 questions · ~20 min

Design an experiment for a new feature, including engagement metrics, MDE, power, randomization, guardrails, and failure modes.

Assessing Statistical SignificanceHard

Explain how to select, execute, and interpret statistical significance tests for A/B test results.

experiment designGuardrail MetricsData AnalysisRRiot Games

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Metrics1 question · ~10 min

Diagnose Engagement DropHard

Identify the causes of a quarterly engagement decline through metric validation, decomposition, segmentation, and trend analysis.

MetricsDiagnosisuser engagementRRiot Games

Behavioral & Leadership2 questions · ~20 min

Project You Were Proud OfEasy

Tests ownership and impact by asking for a project the candidate is genuinely proud of.

achievementaccountabilitybehavioralRRiot Games

Resolving Stakeholder ConflictEasy

Tests conflict resolution, respectful communication, influence without authority, and ownership of the outcome.

Conflict ResolutionLeadershipbehavioral interviewRRiot Games

The finish line: interview-readyComplete all 6 questions plus 2 hands-on drills to finish this plan.