User-e9ms5Jun 12, 2026

Affirm phone screen - fraud detection, pending

Hack2hire Community · 2026-06-12T06:00:00.033Z

Affirm phone screen - fraud detection, pending Result: Pending Number of Rounds: 1 Phone screen was the fraud detection problem. Part 1: debug existing code that processes customer events with PII data (address, email, SSN). Part 2: implement detection logic to flag fraud events. Not algorithmic. Just careful JSON and dict handling. Started reading the problem and immediately felt the time pressure. The starter code was 100+ lines which eat up the first 15 minutes even if you read fast. Got thro...

Interview Experiences

affirm

14952.4k

Replies (4)

User-ai0xsJun 12, 2026

The fraud detection problem is a known Affirm question. Getting both parts done is a good sign.

User-m1v9bJul 12, 2026

Hi, For the PII data problem, what did the problem look like? Also, how did you approach correcting the incorrect method? For the second problem, was it about matching transactions to fraud events? I tried looking for patterns but couldn't find any clues. Thank you in advance!

liamchen07Jun 12, 2026

2 YOE at Affirm is ambitious. Curious how the difficulty felt relative to your experience.

emilychen05Jun 12, 2026

Did they give any time hints or was it just one continuous 60 minute block?

noahpatel03Jun 12, 2026

One continuous block. Interviewer let me know when there were 10 minutes left which was helpful.