Wayfair Full-Stack Software Engineer interview questions

I was first contacted by a recruiter and chatted on the phone with them for about 30 minutes reviewing what was on my resume and the company in general. After that they set me up for a technical interview with one the team leads using coderpad. For this part I was asked to create a class in a language of my choice and then write some SQL. A couple of days after this they contacted me again saying they wanted to move forward with the interview process and sent me out to the HQ in Boston for a day. I met with four different people for an hour each. The first one was just general interview questions about me and my experience. The second one was on the whiteboard where I had to design a database for a DVD rental store. The third one was also on the white board where I was asked to create a class for an elevator. The last one was on coderpad and I was asked to code the knights tour algorithm in any language of my choice. Everyone was very nice through the whole process.