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Updated weekly · Last refresh Oct 17

Anthropic Research Engineer Interview Questions

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

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1
CodingStart here. 9 questions · ~83 min
Binary Search Insert PositionEasy
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Use binary search on a sorted array to find a target index or its insertion position in O(log n) time.

ArraysSearchingSortingAnthropic
Longest Unique Substring WindowMedium
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Use a sliding window and hash table to find the longest substring without repeated characters in O(n) time.

RecursionHash TablesArraysAnthropic
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2
Machine Learning5 questions · ~46 min
Supervised vs Unsupervised LearningEasy
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Explain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.

Unsupervised LearningFeature EngineeringBias-Variance TradeoffAnthropic
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3
System Design3 questions · ~28 min
Implement a Tiered Banking AppHard
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Evaluates your system design and implementation approach for multi-tier stateful application logic.

data managementAnthropic
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4
Behavioral & Leadership8 questions · ~74 min
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5
More topics5 questions · ~46 min
Evaluate Model Bias RigorouslyMedium
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Approach for evaluating whether a model is biased, including fairness metrics and statistical tests for group disparities.

PrecisionAccuracyRecallAnthropic
Large-Scale Training Data PipelineHard
Recently asked

Tests data engineering skills for robust training datasets and safe, repeatable backfill workflows.

ETLBatch ProcessingBackfillingAnthropic
Evaluate LLMs and Generate DataMedium
Recently asked

Evaluates your approach to LLM evaluation design and data augmentation for assessment.

Anthropic
Measure AI Model PerformanceEasy
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Explain how to evaluate an AI model using the right metrics and how metric choice depends on the business goal.

PrecisionAccuracyRecallAnthropic
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