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Prep plan
Updated weekly · Last refresh Aug 30

Denali Therapeutics AI Engineer Interview Questions

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

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~5htotal time
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1
CodingStart here. 7 questions · ~74 min
Find Two Sum IndicesEasy
Practice

Use a hash map to find two array elements that sum to a target in O(n) time.

Hash TablesArraysSortingDenali Therapeutics
Reverse a Linked ListEasy
Practice

Reverse a singly linked list in place using pointer manipulation.

RecursionLinked ListsDenali Therapeutics
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2
System Design5 questions · ~53 min
Design Feature Drift Monitoring SystemHard

Design a production ranking system with robust feature drift monitoring across batch and real-time features at high QPS.

Feature StoreFeature DriftModel ServingDenali Therapeutics
Design an LLM Serving PlatformHard

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

Cold StartFeature StoreModel ServingDenali Therapeutics
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3
Machine Learning5 questions · ~53 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 EngineeringRegularizationDenali Therapeutics
Supervised vs Unsupervised LearningEasy

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

Unsupervised LearningFeature EngineeringBias-Variance TradeoffDenali Therapeutics
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4
Generative AI & LLMs4 questions · ~42 min
Offline and Online RAG EvaluationHard

Tests your ability to measure RAG performance with rigorous offline tests and real user impact online.

RetrievalRAGLLM EvaluationDenali Therapeutics
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5
Behavioral & Leadership5 questions · ~53 min
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6
More topics1 question · ~11 min
Model Performance MetricsEasy

Tests your understanding of metric selection aligned to objectives and tradeoffs.

PrecisionAccuracyRecallDenali Therapeutics
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