Google sr. security engineer interview

interview coming up, what can I expect in terms of questions? a better question to ask I guess is for those who are currently at Google as a SecEng or a dev, what security process problems are you currently facing and would want a new googler to solve or contribute to a working solution? any leetcode or security specific scripts/algo questions? UPDATE: if you're scrolling down, might as well not. one or two helpful answers but rest are all t