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Updated weekly · Last refresh Oct 17

OWKIN Research Scientist Interview Questions

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

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1
CodingStart here. 4 questions · ~36 min
Implementing K-Means ClusteringMedium
Practice

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

MathArraysSortingOWKIN
Explain Time Complexity of Array SearchEasy

Explain how to analyze the time complexity of a common array search solution and justify the Big O result.

MathArraysSearchingOWKIN
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2
Machine Learning5 questions · ~45 min
Feature Selection TechniquesHard

Compare filter, wrapper, and embedded feature selection methods while preserving validation performance and interpretability.

Cross-Validationmodel selectionFeature EngineeringOWKIN
Supervised vs Unsupervised LearningEasy

Explain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.

Unsupervised LearningFeature EngineeringBias-Variance TradeoffOWKIN
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3
Behavioral & Leadership8 questions · ~72 min
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4
More topics5 questions · ~45 min
Model Performance EvaluationHard

Explain how to select metrics, validate predictions, and analyze errors when evaluating a machine learning model.

model performanceevaluation metricsPrecisionOWKIN
Clinical Document Retrieval PipelineHard

Tests your ability to design and validate retrieval and ranking systems for OWKIN's clinical data workflows.

ML RankingRetrievalRecommendation SystemsOWKIN
Apply Statistical MethodsMedium

Tests your ability to use statistics to drive decisions and validate results.

ExperimentationRegressionCausal InferenceOWKIN
RAG for Medical Q&A SafetyHard

Tests your ability to build safe, reliable LLM workflows for medical literature at OWKIN.

HallucinationPrompt EngineeringRAGOWKIN
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