Initial call with recruiter, follow-up call with hiring manager, then final rounds of panel interviews.

If you have other pending opportunities, I'd recommend pursuing them and not waiting to hear back from them.

Given they have a lot of applicants, it doesn't appear they have the bandwidth to follow up if you're not a fit. This might sound like an apologist viewpoint, but that's likely the reality. Feel free to apply if you're okay with that outcome.

They will ask about your work history and how it relates to the job you're interviewing for. These are pretty standard interview questions – no puzzles or brain teasers that some places like to throw at you. They just want to see if you're a fit and gauge your technical capabilities against the role.

How are you going to contribute to the team?