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
Backend Engineer
•
Coding
•
medium
Implement a thread-safe LRU Cache with a Time-To-Live (TTL) for each item. Expired items should not be returned and should be cleaned up efficiently.
#Hash Map
#Linked List
#Concurrency
Backend Engineer
•
Coding
•
medium
Implement a Trie (Prefix Tree) that supports inserting strings, searching for exact matches, and finding all strings that share a given prefix. Optimize it for memory.
#Trees
#String Manipulation
#Memory Optimization
Backend Engineer
•
Coding
•
medium
Implement a bounded blocking queue. It should support enqueue and dequeue operations, blocking when full or empty, respectively.
#Concurrency
#Synchronization
#Thread Safety
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.