Ant Group Interview Questions
The questions to prepare for Ant Group interviews, across all roles. Questions from real interview reports rank first. Updated weekly.
Identify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.
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Outline the first checks to diagnose a sudden drop in a core product metric, starting with data quality, scope, and decomposition.
Explain what a p-value means in hypothesis testing and how it relates to statistical significance.
Walk through how you led a regulated product launch from idea to market, including planning, stakeholder alignment, risks, and success metrics.
Explain how to derive time and space complexity for a coding solution and justify the final Big O bounds.
Explain which classification metrics to use and how metric choice depends on the business objective and error tradeoffs.
Explain how to handle NULLs, skewed values, and outliers when preparing an analysis dataset using SQL.
Detect missing fields, duplicate transaction keys, invalid amounts, and merchant reference issues with PostgreSQL CTEs and joins.
SigmoidUse ROW_NUMBER to return each student's second score on a specified Khan Academy exercise.
Khan AcademyFind the top 3 users by completed transaction volume in the last 30 days using joins and aggregation.
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