It was a standard cordial HR interview. The interviewer was nice and explained clearly what they are looking for and the benfits of working there. They did warn me that they take themselves very seriously and that their intake process is "very tough Leetcode style" . Ultimately they turned me down for reasons not known to me.

For a senior position, I would expect an interview process that better assesses actual abilities and experience. This was basically "if you spend enough time on Leetcode you'll pass". Same kind of thing I'd expect from a junior interview where there's nothing real-life to talk about. It wasn't bad, but it felt like the company was missing the opportunity to really get to know what a candidate could do for them.