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Prep plan
Updated weekly · Last refresh Aug 30

ElevenLabs Research Engineer Interview Questions

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

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1
Machine LearningStart here. 4 questions · ~33 min
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 EngineeringRegularizationElevenLabs
Supervised vs Unsupervised LearningEasy

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

Unsupervised LearningFeature EngineeringBias-Variance TradeoffElevenLabs
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2
System Design3 questions · ~25 min
Design a Personalized Recommendation RankerHard

Design a personalized recommendation system that turns user preferences into ranked suggestions with retrieval, ranking, and feedback loops.

RetrievalTwo-Tower ModelsRecommendation SystemsElevenLabs
Real-Time Large Dataset AI SystemHard

Tests system design skills for scalable, low-latency ML pipelines and operational trade-offs.

InfrastructureStream ProcessingFeature StoreElevenLabs
API Design for ML ServicesMedium

Tests product-minded API design, reliability, latency, and model lifecycle considerations.

InfrastructureFeature StoreModel ServingElevenLabs

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3
Coding3 questions · ~25 min
Data Structure Trade-OffsMedium

Tests algorithmic reasoning and practical understanding of time and space complexity.

Hash TablesLinked ListsArraysElevenLabs
Neural Network From ScratchHard

Tests your coding fundamentals and your understanding of neural network operations and training loops.

Neural NetworksArraysGradient DescentElevenLabs
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4
Behavioral & Leadership7 questions · ~58 min
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5
More topics1 question · ~8 min
Model Performance MetricsEasy

Tests ability to choose appropriate metrics aligned with task goals and failure modes.

PrecisionAccuracyRecallElevenLabs
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