Anthropic Phone Screen | Easy pass. Small question bank

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anthropic
February 7, 2026 · 67 reads

Summary

I'm sharing my phone screen experience with Anthropic. I noted their small question bank for coding and system design. I successfully cleared the online assessment, the recruiter call, and the phone interview where I was asked the Stack Trace problem, moving me forward to the onsite round.

Full Experience

I noticed not many people have shared their experience interviewing with Anthropic. I'm currently going through the process and just went through the phone screen, so I figured I'd share and help out. One thing I noticed when prepping is that the current question bank for both the coding phone screen and system design rounds appears to be very small. From what I have seen from other posts like this one and reddit, is there are only a handful of reported questions for each stage. I've seen people get asked a variation of the LC webcrawler question lot but I haven't been asked it yet.

Online Assessment

I was given an online assessment. It ended being the exact problem I had already practiced, so this went pretty well.

Recruiter / HR Call

After passing the OA, I had a recruiter call that focused mainly on:
  • Resume walkthrough
  • Why Anthropic
  • What I know about their values and mission
I would definitely recommend prepping some good answers to these ahead of the call

Phone Interview

The recruiter call also went smooth and I got a link to mloop to schedule the tech screen. Before the interview, I practiced all the known coding questions I could find During the actual phone interview, I was asked the Stack Trace problem, which was another of the questions I had specifically prepared.

Overall Thoughts

I feel the interview went well and I will likely be moving on to the onsite round. If people are interested, I can share a follow-up post after completing the onsite and summarize those rounds as well.

Interview Questions (3)

1.

Web Crawler

Data Structures & Algorithms

A variation of the LeetCode webcrawler question. I had seen people get asked this frequently.

2.

Maximum Number of Points on a Line

Data Structures & Algorithms

An online assessment problem that was an exact match to a problem I had practiced previously. I was given this during an online assessment for Anthropic.

3.

Stack Trace Problem

Data Structures & Algorithms

During the phone interview, I was asked the Stack Trace problem, which I had specifically prepared for.

Preparation Tips

I prepared by noticing the small question bank for Anthropic's coding phone screen and system design rounds, drawing information from other posts and Reddit. I specifically practiced all known coding questions I could find, including the Stack Trace problem, which I was asked in my phone interview. For the recruiter call, I prepared answers for a resume walkthrough, 'Why Anthropic', and questions about their values and mission.

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