Anthropic
AI safety and research company behind Claude, focusing on constitutional AI.
5 Rounds
~20 Days
Very Hard
The Interview Loop
Recruiter Screen (30 min)
Standard fit check, behavioral questions, and resume overview.
Technical Loop (3-4 Rounds)
Deep dive into domain knowledge, coding, and system design.
Interview Question Bank
Data Scientist
•
Coding
•
medium
Implement a function in Python to calculate the Elo rating update for two LLMs given a human preference rating (win, loss, or tie).
#Python
#Math
#Algorithms
Data Scientist
•
Coding
•
medium
Write a Python function to efficiently deduplicate a massive dataset of text documents (billions of tokens) prior to model pre-training. What algorithmic approach would you use?
#Python
#Data Deduplication
#MinHash
#LSH
Data Scientist
•
Coding
•
hard
Implement an algorithm to find the longest common substring between two large text prompts. We use this to identify potential prompt injection templates spreading among users.
#Dynamic Programming
#String Manipulation
#Security
Data Scientist
•
Coding
•
medium
Implement a stratified sampling algorithm to select 10,000 prompt-response pairs for human evaluation, ensuring the sample exactly matches the real-world distribution of 15 different safety categories.
#Python
#Sampling
#Statistics
Data Scientist
•
Coding
•
medium
Write a Python function using NumPy to efficiently compute the cosine similarity between a single target embedding vector and a matrix of 1 million document embeddings.
#Python
#NumPy
#Linear Algebra
Difficulty Radar
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Senior EngineerFocuses on core competencies, system constraints, and clear communication.
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