I applied online.
I took the online test and then had the architecture interview. I came up with a viable solution for the problem, but I received the rejection. I asked the recruiter for feedback, and the interviewers lied in the feedback by adding negative points about things that were not discussed in the interview, probably to have a stronger argument for the rejection. I won't apply for jobs at Nubank again because after this experience I realized that they don't make an effort to make a fair selection process and it's just a waste of time to do the interview.
Architecture design for a solution involving chargebacks.
The following metrics were computed from 1 interview experience for the Nubank Backend Software Engineer role.
Nubank's interview process for their Backend Software Engineer roles is extremely selective, failing the vast majority of engineers.
Candidates reported having very negative feelings for Nubank's Backend Software Engineer interview process.