It took around 4 weeks, there were 3 rounds of interview, the 1st one was the code pairing challenge which was straightforward, the rest were just unstructured discussions with 2 other engs asking you about a challenge you had in the past and try to find out how deep you are in what you claim.

The strange part is that they don't seem very transparent, after having all interviews I got rejected by a templated email with the subject thank you for your time :))

I asked for feedback and they haven't responded so far, besides what they have mentioned on that template. My advice is to not waste your time with them.

Tell me about a recent challenge you had in your projects