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Updated weekly · Last refresh Oct 17

Grammarly Machine Learning Engineer Interview Questions

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

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~6htotal time
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1
CodingStart here. 5 questions · ~44 min
String Normalization CombinatoricsHard
Practice

Parse Grammarly Editor text alternatives and return unique lowercase, whitespace-normalized combinations.

combinatoricsstring manipulationGrammarly
Linear Regression From ScratchMedium
Practice

Fit a univariate linear regression model from data using gradient descent or the normal equation.

MathArraysGradient DescentGrammarly
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2
Machine Learning13 questions · ~116 min
Decision Tree Pros and ConsMedium

Explain when decision trees work well, where they fail, and how to evaluate them against simpler or more stable alternatives.

Feature EngineeringDeep LearningSupervised LearningGrammarly
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3
System Design6 questions · ~53 min
ML System DesignHard

Evaluates ability to design ML systems end-to-end with practical engineering considerations.

Grammarly
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4
Behavioral & Leadership8 questions · ~71 min
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5
More topics6 questions · ~53 min
Model Performance EvaluationHard

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

model performanceevaluation metricsPrecisionGrammarly
Build a Sentiment ClassifierEasy

Classify customer reviews as positive, negative, or neutral using a practical NLP pipeline.

Text ClassificationSentiment AnalysisTokenizationGrammarly
ML Model Deployment ConsiderationsMedium

Key pipeline considerations for deploying an ML model into production, including orchestration, reproducibility, data quality, and monitoring.

InfrastructuremonitoringQualityGrammarly
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 TuningGrammarly
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