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Updated weekly · Last refresh Nov 6

ByteDance Machine Learning Engineer Interview Questions

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

50questions
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1
CodingStart here. 13 questions · ~145 min
Maximize Number by Moving One DigitMedium
Practice

Maximize a nonnegative integer by swapping at most two digits using a greedy last-occurrence scan.

ArraysArray ManipulationAlgorithmsByteDance
Reverse a Singly Linked ListEasy
Practice

Reverse a singly linked list in place using pointer manipulation with O(n) time and O(1) extra space.

CodingData StructuresAlgorithmsByteDance
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2
System Design14 questions · ~156 min
3
Machine Learning14 questions · ~156 min
Loss Function Design for GoalsHard

Design and justify a classification loss that aligns optimization with asymmetric errors, imbalance, calibration, or ranking goals.

loss functionsModel EvaluationClass ImbalanceByteDance
Basic ML Knowledge CheckHard

Explain the preprocessing, model selection, training, and evaluation concepts applied to a machine learning coding problem.

data preprocessingmodel selectionCodingByteDance
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4
Behavioral & Leadership4 questions · ~45 min
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5
More topics5 questions · ~56 min
Improve Model AccuracyMedium

Approach for improving a model's accuracy by checking errors, features, and tuning choices.

Hyperparameter TuningCross-ValidationAccuracyByteDance
Distributed Training and Deployment PipelineHard

Evaluates your ability to design scalable distributed ML training and deployment pipelines.

large datasetsByteDance
Semantic Similarity CalculationMedium

Assesses NLP understanding and ability to choose embeddings or models for similarity.

ByteDance
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