I applied through a recruiter. The process took 2 weeks.

I was contacted via LinkedIn and participated in the selection process, but I was rejected a few weeks ago and received no feedback. I requested a response from the person who contacted me and her superior on several occasions, but the answer I got was that there were too many candidates and it wouldn't be possible to provide feedback due to lack of time. The impression I got is that HR tries to meet goals by including as many candidates as possible in the process, and then ignores the concerns of those who are not selected. I had always viewed Nubank positively, but this single more direct experience left me with the feeling that they have little regard for those who participate in the process, especially those who are rejected.

Create a tax calculation system.