Top 18
Prep plan
Updated weekly · Last refresh Sep 22
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Enel Data Scientist Interview Questions

The questions to prepare for a Enel Data Scientist interview. Questions from real interview reports rank first. Updated daily.

18questions
~3htotal time
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1
A/B Testing & ExperimentationStart here. 4 questions · ~35 min
Experiment Design for a Mobile AppHard

Design a mobile feature A/B test with clear hypotheses, metrics, MDE, power, randomization, analysis, and shipping criteria.

experiment designMDEmobile appEEnel
Common Pitfalls in Experiment ResultsHard

Identify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.

PeekingNovelty EffectSample Ratio MismatchEEnel
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2
Statistics & Probability3 questions · ~26 min
Significance and DeploymentMedium

Assesses understanding of significance in model deployment decisions.

Decision MakingStatistical SignificanceEEnel
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3
Machine Learning3 questions · ~26 min
Bias and Variance in XGBoostMedium

Evaluates understanding of bias-variance tradeoffs in gradient boosting for energy data.

model performanceBias-Variance TradeoffEEnel
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4
Behavioral & Leadership4 questions · ~35 min
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5
More topics4 questions · ~35 min
SQL Moving AverageMedium
Practice

Calculate a calendar-based 30-day moving average of daily energy consumption using PostgreSQL window functions.

missing valuesDate FunctionsData AnalysisEEnel
Balance User Needs and GoalsMedium

Explain how you balanced user needs with business goals in a product decision, including trade-offs and outcomes.

Feature PrioritizationUser NeedsValue PropositionEEnel
First Checks for Metric DropsEasy

Outline the first checks to diagnose a sudden drop in a core product metric, starting with data quality, scope, and decomposition.

Lagging IndicatorsLeading IndicatorsDiagnosisEEnel
Metric for Energy FeatureMedium

Tests metric design and alignment with product goals in Enel context.

EEnel

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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
The finish line: interview-readyComplete all 18 questions plus 2 hands-on drills to finish this plan.