San Francisco Bay AreaJan 15, 2026Full JourneyMultiple Types8/10 difficulty
I'm sharing my interview experience at Anthropic. The process was more focused on AI scenarios than I expected. Overall, it was smooth, but the difficulty was high. **Recruiter Screen:** I had been a heavy user of Claude and had studied its product logic. I se...
**Phone Screen (Coding):** I was asked to write a web crawler. First, I implemented a single-threaded version. After discussing it, I was asked to implement a multi-threaded version. **Onsite (Coding):** I had to implement a classic data deduplication system....
00
San Francisco Bay Area
Jan 15, 2026
Onsite
Multiple Types
6/10 difficulty
The interview process consisted of a phone screen and an onsite interview. **Phone Screen:** - Coding: I was asked an LRU Cache problem. I have solved it before, so I was familiar with it. - System Design: Batch inference. **Onsite:** - System Design doc revie...
00
Mountain View, CA
Jan 15, 2026
Phone Screen
Coding
6/10 difficulty
The coding question I got was: ``` text = "applepiepear" dictionary = ["app:10", "apple:20", "pie:30"] ``` My task was to tokenize the input string into a sequence of outputs by scanning from left to right and applying a **greedy longest-match strategy**. **To...
055
San Francisco Bay Area
Jan 5, 2026
Full Journey
Multiple Types
7/10 difficulty
I had a phone screen involving image processing. I had to use PIL to perform grayscale, scaling, and resizing operations. The process involved handling small images first and then larger images, and I used ProcessPoolExecutor to improve performance. The recrui...
00
San Francisco Bay Area
Dec 31, 2025
Full Journey
Multiple Types
6/10 difficulty
### Round 1: Product Design (Amusement Park) The question was framed as a product design exercise rather than a traditional system design problem. I was presented with a Google Doc instead of using a coding platform. The interviewer stated not to draw a system...
00
San Francisco Bay Area
Dec 30, 2025
Full Journey
Multiple Types
6/10 difficulty
My interview experience at Anthropic involved several rounds focusing on practical engineering problems and AI safety principles. **Recruiter Screen:** This was a standard background conversation covering my motivation for joining Anthropic, my interest in AI...
02
San Francisco Bay Area
Dec 28, 2025
Online Assessment
Coding
7/10 difficulty
Implement a simple cloud storage service that allows users to **store files, duplicate existing files, and query file sizes**. The system should support the following operations: --- ### Operation 1 **boolean addFile(String name, int size)** Adds a new file to...
0100
San Francisco, CA
Dec 28, 2025
Full Journey
System Design
9/10 difficulty
## Problem Overview The task is to design a distributed algorithm to compute the mode of a large collection of integers stored across k distributed workers. Each worker has only its local, unsorted partition of the data, and no worker has visibility into the f...
055
San Francisco Bay Area
Dec 27, 2025
Onsite
Coding
7/10 difficulty
## Problem Description You are tasked with finding groups of duplicate files within a simulated file system rooted at "/". Two files are considered duplicates if their complete binary contents are exactly the same, regardless of file names or paths. The challe...