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
•
easy
Write a Python script using Pandas to sample a stratified subset of 10,000 conversational logs, ensuring a balanced distribution across 5 different safety violation categories, while prioritizing longer conversations.
#Stratified Sampling
#Pandas
#Data Preparation
Data Scientist
•
Coding
•
medium
Write a Python function to compute the BLEU score between a candidate string and a list of reference strings from scratch.
#NLP
#Algorithms
#String Manipulation
Data Scientist
•
Coding
•
medium
Implement an algorithm to perform stratified sampling on a large dataset of RLHF prompts, ensuring equal representation across 10 different safety categories.
#Sampling
#Data Manipulation
#Pandas
Data Scientist
•
Coding
•
hard
Write a Python function to find the longest repeating substring in a generated text. This is useful for detecting if a model has fallen into a repetitive loop.
#Dynamic Programming
#Suffix Trees
#String Algorithms
Data Scientist
•
Coding
•
easy
Given a massive JSONL file of model interaction logs, write a memory-efficient Python script to extract the error rate per model version.
#File I/O
#Memory Management
#JSON
Data Scientist
•
Coding
•
medium
Implement the TF-IDF algorithm from scratch in Python to find the most important keywords in a set of user queries.
#NLP
#Math
#Data Structures
Difficulty Radar
Based on recent AI-sourced data.
Meet Your Interviewers
The "Standard" Interviewer
Senior EngineerFocuses on core competencies, system constraints, and clear communication.
SimulateUnwritten Rules
Think Out Loud
Always explain your thought process before writing code or drawing architecture.