How would you prepare for the coding problem as a senior? What are the assumptions that underpin this?

honestly, for a senior, the coding challenge is just a checkbox -- because they can use llms, the main thing is making sure whatever code they accept, they can explain from top to bottom.

the coding challenge itself is just a way to make sure that people can understand a request within an existing codebase. as an example, i pay attention to the questions the candidate asks -- questions asked always mean something.

my general assumption with seniors are "they can think high level", which means i "mark them" with that assumption, so for me, the architecture talk is much more important.

at the end of the day, you need to understand what your org needs and adapt.