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Prep plan
Updated weekly · Last refresh Aug 30

ByteDance AI Engineer Interview Questions

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

38questions
~7htotal time
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1
CodingStart here. 9 questions · ~93 min
Reverse a Linked ListEasy
Practice

Reverse a singly linked list in place using pointer manipulation.

RecursionLinked ListsByteDance
Breadth-First Search in PracticeEasy
Practice

Return the breadth-first traversal of an Amaris Consulting dependency graph from a given starting node.

QueueSearchingGraphsByteDance
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2
System Design4 questions · ~41 min
Design an LLM Serving PlatformHard

Design an LLM serving system that balances latency, cost, scalability, and safety for production traffic.

Cold StartFeature StoreModel ServingByteDance
Design a Video Comment RankerHard

Design an ML driven comment retrieval and ranking system for a video platform, balancing relevance, safety, freshness, and creator needs.

Feature StoreModel ServingRecommendation SystemsByteDance
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3
Generative AI & LLMs8 questions · ~83 min
Choose Between RAG and Fine-TuningEasy

Compare RAG and fine-tuning, and decide when each is the better fit for an LLM product.

ByteDance
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4
Model Evaluation4 questions · ~41 min
Diagnose and Improve Underperforming ModelMedium

Structured approach for diagnosing an underperforming ML model and improving it through evaluation, error analysis, and threshold or model changes.

PrecisionAccuracyRecallByteDance
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5
Behavioral & Leadership9 questions · ~93 min
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6
More topics4 questions · ~41 min
Explain Transformer Architecture BasicsEasy

Explain the transformer architecture and why it became a core building block for modern NLP systems.

Neural NetworksLanguage ModelsDeep LearningByteDance
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 EngineeringRegularizationByteDance
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