Wayfair Data Scientist Interview

I am a graduate student of a Data Science program in the US. I am doing a co-op with Cummins (with a full-time offer starting from January) and have the first round of interview with Wayfair for Data Scientist Generalist/Machine Learning Engineer position.

I have 1.5 years of experience with Mu Sigma which is a Data Science consulting firm and close to 6 months of internship + co-op experience with Cummins

It will be a case study round. Can someone guide me on how should I prepare for the first round of interview?