Top 12
Prep plan
Updated weekly · Last refresh Aug 30

Rakuten AI Engineer Interview Questions

The questions to prepare for a Rakuten AI Engineer interview. Questions from real interview reports rank first. Updated weekly.

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1
CodingStart here. 3 questions · ~29 min
Basic Linear Regression FunctionEasy
Practice

Implement ordinary least squares to fit a line and predict values for new inputs.

RegressionMathArraysRakuten
Data Structures Coding ChallengeHard

Tests your problem-solving and data-structure knowledge under coding interview constraints.

Hash TablesArraysTreesRakuten
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2
Machine Learning6 questions · ~58 min
Supervised vs Unsupervised LearningEasy

Explain how supervised, unsupervised, and reinforcement learning differ in data, objectives, and evaluation.

Unsupervised LearningFeature EngineeringSupervised LearningRakuten
Reducing Overfitting in ML ModelsMedium

Explain how to diagnose and reduce overfitting using regularization, cross-validation, and model selection.

Cross-ValidationBias-Variance TradeoffRegularizationRakuten
Handling Missing Values in MLEasy

Explain practical strategies for handling missing values in a supervised learning workflow, from diagnosis to modeling and validation.

Cross-ValidationFeature EngineeringRegularizationRakuten
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3
More topics3 questions · ~29 min
Data Quality in ML PipelinesMedium

Practical approach for maintaining data quality across ML ETL pipelines, orchestration, and repeatable data processing.

Data QualityETLData ModelingRakuten
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 TuningRakuten
Model Evaluation MetricsEasy

Tests your ability to select appropriate metrics based on task type and business or research goals.

PrecisionAccuracyRecallRakuten

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