Wayfair interview questions

Applied Online. First interview with HR comprised of standard set of question. 2nd was technical telephone interview . Mostly SQL related and some OO concepts. 3rd was onsite interview which comprised of three interviews of 1 hour each. 1st was with senior software engineer and solution architect. They asked questions related to database design, normalization n some sql queries. Some question related to webservices and xml. Write a program to covert number to word. (quite easy). 2nd Interview was with two senior software engineers . They asked questions related to design patterns and solve given problem applying one of them. They asked to write a program which required recursive function call. 3rd was with Director. Overall strength and experience check. Question right from troubleshooting a web page load problem to database explain plans. The process took two weeks.