What to expect in first round of Applied Researcher 3 at eBay

Hi folks, I have a call scheduled with eBay for Applied Researcher 3 position at NYC. The recruiter was weirdly vague about the nature of the call and quite frankly cocky as well. He mentioned there'll be some coding and ML questions. What's the level of difficulty I should expect for coding and is the ML part more of ML knowledge or ML system design? Any insight is helpful! TC: 180K YOE: 3 #ebay #machinelearningengineer