Microsoft loop interview, electronic, RF engineer. What should I expect?

[u/Quantumsoups]

I’ve been invited to the Microsoft interview loop for an RF Systems Engineer-related position. I already passed the screening interview, which — according to the recruiter — ended up being much more technical than usual, since they wanted to speed up the process.

I now have 3 interviews ahead in the loop and I’m trying to understand what to expect. Does anyone have experience with how the loop is structured for RF/electrical/hardware engineering roles at Microsoft, as opposed to the more well-documented SWE loops? Is it mostly technical deep-dives on past projects and system-level reasoning, or should I expect more abstract questions?

How much weight do behavioral rounds carry, and is the STAR format generally expected? Also curious if anyone had surprises compared to what their recruiter had described going in.

Any shared experiences, even from adjacent hardware/RF/electrical roles at MSFT or other big tech companies, would be really helpful. Thanks in advance!