Sonata Interview Questions
The questions to prepare for Sonata interviews, across all roles. Questions from real interview reports rank first. Updated daily.
Calculate three-day rolling user activity averages and classify behavior trends with SQL window functions.
Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.
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Benjamin MooreScan the array once to track the largest and second largest distinct values in O(n) time.
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Identify the causes of a quarterly engagement decline through metric validation, decomposition, segmentation, and trend analysis.
Explain how you align stakeholders with competing priorities, make trade-offs explicit, and keep execution on track.
Define a success metric for a new feature that captures real user value, not just raw usage.
Identify major online experimentation pitfalls and explain practical mitigations for SRM, network effects, peeking, and novelty.
Approach for preserving correctness during a pipeline migration, including validation, replay safety, and controlled cutover.
Explain what statistical significance means, how p-values and confidence intervals support decisions, and why significance alone is not enough.