ENGIE Data Scientist Interview Questions
The questions to prepare for a ENGIE Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Use a CTE and window functions to rank active wells and calculate cumulative oil production within each basin.
ENGIECalculate each user's 7-day rolling transaction average and daily spend rank using PostgreSQL window functions.
RakutenRank Delta Air Lines routes by monthly revenue using joins, aggregation, and a window function.
Delta Air LinesDesign an experiment to determine whether a new feature meaningfully improves user engagement without harming core product health.
ENGIEDesign an experiment to tell whether a new feature improves true retention, not just short-term usage.
ENGIEPick a primary launch metric and guardrails that capture feature value without missing harmful side effects.
ENGIEUse a two-proportion z-test and a 95% confidence interval to decide how to communicate a checkout A/B test result to product and executive audiences.
ENGIEExplain a practical feature selection process using validation, regularization, and model-based importance to improve generalization.
ENGIEDesign a production ranking service that balances model accuracy with latency and throughput under large-scale traffic.
ENGIEExplain which classification metrics to use and how metric choice depends on the business objective and error tradeoffs.
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