Recruiter screen - Standard questions around past experiences.
Coding round - LeetCode Hard. It was tagged as a pretty much identical question on LeetCode, which I was able to answer easily. They then asked multiple follow-ups, but I was ultimately rejected.
Go through their LeetCode tagged section; it's accurate.
The following metrics were computed from 2 interview experiences for the Affirm Staff Software Engineer role in Spain.
Affirm's interview process for their Staff Software Engineer roles in Spain is extremely selective, failing the vast majority of engineers.
Candidates reported having very negative feelings for Affirm's Staff Software Engineer interview process in Spain.