I applied online. The process took 4 months.

The interview process took around 4 months, with multiple stages. It was all a standard process, except for the really long waiting period between stages. The stages were an initial screening by an HR guy, a technical interview about your past experiences, a design interview, and a behavioural interview. Most of them were clearly experienced in running interviews, specifically 3 out of 4 of the interviews.

I had the bad luck of being paired with 2 guys in one of the interviews. Both of them wanted to lead the interview in two different directions. One of them I'm to this day not sure could understand English, as he repeatedly asked me about things I had already explained, and even the other interviewer intervened a couple of times to tell him that I already explained that point. It was the most painful interview I've been to.

The scope of the interviews didn't match what the HR guy described either. Every single time, I prepared for a different interview and had to overcome being surprised by the interviewers and having to wing it. Monzo, you need to do better.

How would you implement a "new music" feed in Spotify, based on this design? Explain it at an architectural level, or better yet, draw a component diagram, create an API contract, explain it at an architectural level, or create an API contract.