Airwallex Data Scientist Interview Questions
The questions to prepare for a Airwallex Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Use GROUP BY and SUM to rank the top 10 customers by total revenue from a single sales table.
AirwallexOptimize a PostgreSQL aggregation query by filtering efficiently, reducing intermediate rows, and returning qualifying customer totals.
Design an onboarding A/B test with explicit SRM detection, power analysis, guardrails, and a decision rule for whether results are valid.
AirwallexEstimate sample size and power for an experiment, define MDE and guardrails, and decide whether the test is worth running.
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Explain how statistical significance and confidence intervals are interpreted in a product experiment.
AirwallexImplement a CART decision tree from scratch, including split selection, stopping rules, prediction, and evaluation.
AirwallexExplain how you evaluated a marketing campaign using funnel, efficiency, and business outcome metrics.
AirwallexDefine a success metric for a new feature that captures real user value, not just raw usage.
AirwallexDesign a real-time pipeline for sensor events that transforms data and feeds a UI with low latency.
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