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Updated weekly · Last refresh Oct 17

Merck Machine Learning Engineer Interview Questions

The questions to prepare for a Merck Machine Learning Engineer interview. Questions from real interview reports rank first. Updated daily.

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1
Machine LearningStart here. 7 questions · ~69 min
Tune Hyperparameters for Model SelectionMedium

Choose hyperparameters with cross-validation and validation metrics, while balancing bias, variance, and overfitting.

Hyperparameter TuningCross-ValidationRegularizationMerck
Handling Missing Data in MLMedium

Explain practical strategies for handling missing data and how to validate that the chosen approach improves model performance.

Feature EngineeringData WranglingSupervised LearningMerck
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2
Behavioral & Leadership5 questions · ~49 min
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3
More topics7 questions · ~69 min
Implementing K-Means ClusteringMedium
Practice

Implement Lloyd's k-means algorithm to cluster 2D points by iteratively updating centroids.

MathArraysSortingMerck
Improve Underperforming Model AccuracyMedium

Approach for diagnosing an underperforming model and improving accuracy through error analysis, feature work, tuning, and bias variance tradeoffs.

Cross-ValidationAccuracyThreshold TuningMerck
Design a Personalized Recommendation RankerHard

Design a personalized recommendation system that turns user preferences into ranked suggestions with retrieval, ranking, and feedback loops.

RetrievalTwo-Tower ModelsRecommendation SystemsMerck
Data Cleaning in ETL PipelinesEasy

Approach for cleaning and preparing raw data inside an ETL pipeline.

Data WranglingETLQualityMerck
Common Model Evaluation MetricsEasy

Explain common machine learning evaluation metrics and when each is useful.

PrecisionAccuracyRecallMerck
Maximum Product of Two NumbersEasy
Practice

Find the maximum product of any two array values in one pass by tracking the two largest and two smallest numbers.

MathArraysSortingMerck
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