Shopify Big Data Engineer interview questions

First Interview was with HR.The second one was with the manager and it was about the Map Reduce. The third interview was with the person who has done some work in Machine Learning and it was about the clustering algorithms and whether I have worked on that or not. The entire interview process was focused on my work experience.The people I spoke to were very nice. I was told that my canadian visa shall be processed but I wasn't prepared to got to Cannada.I will definitely recommend this company