It was a very good interview, with 2 phases, the first phase was a problem solving Interview in which you have to solve it live with your interviewer and resolve follow up questions that represents optimization. The second phase was a system design interview.

Omit HR call because it is a random and depends on a person. I did not till the end know what team they want to match me in and that frustrate a lot 1) I was asked extensively upon my previous experience and practice oriented questions like how write a good quality code etc. 2) Coding - TDD kata. Be ready to elaborate on each step in details 3) System design - hard part. Looks like downgrade attempt as it works like in a bigtech(but fellows are not), you may be given a random question. Learn Uber or delivery design with focus on proximity part and all about geo data 4) Engineering fit: not classic one. CTO started to ask precise dates of work at past positions and what services directly I owned(for SWE-2 not even senior position). There were no classic STAR questions at all. It was over pretty fast without any feedback