Nubank Data Scientist Interview Questions
The questions to prepare for a Nubank Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Calculate daily sales and a date-based 30-day rolling average using PostgreSQL window functions.
Investigate a sudden transaction approval rate decline by validating the metric, decomposing drivers, and distinguishing product issues from data or ext...
Explain a production ML deployment lifecycle covering packaging, serving, validation, monitoring, drift detection, and rollback.
Explain how to select, execute, and interpret statistical significance tests for A/B test results.
Framework for deciding when to favor short-term conversion gains versus long-term retention in a product decision.
Identify major online experimentation pitfalls and explain practical mitigations for SRM, network effects, peeking, and novelty.
Compare Random Forest and Gradient Boosting, then choose the right ensemble for a supervised learning task.
Define a success metric for a new feature that captures real user value, not just raw usage.
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Identify each user's consecutive website activity streaks using date arithmetic and SQL window functions.
Intuit Management Consultancy
Chewy
SuperhumanFind each user's longest consecutive login streak by deduplicating login dates and identifying gaps between days.
Didi Chuxing
ByteDance