Yelp: ML Engineer phone interview

I have an upcoming phone interview for ML Engineer at Yelp. Although I have been some background on interview structure but I am not sure what kind of coding problem to expect. - Will there be a regular software engineering type exercise or would it involve ML solution? - how does it compare to LC challenges? Or are there other resources that I can use? I know it's hard to predict but wanted to get a sense from ppl who might have gone through this or Engineers from Yelp.