wayfair fulltime software engineer onsite interview experience
Interview Experience
First Round, Case Study
纯聊天
先问了问 project dive deep
然后一个 case study system design，post purchase recommendation through email
Final Rounds
第一轮 BQ
第二轮 case study, 聊在google search上怎么做 bidding，price该怎么计算
第三轮 Python coding, multi armed bandit
第四轮 ML system design, 在 product 界面，rank rows of [""Compare Similar Items"", ""4 Stars and Above"", ""Frequently Bought Together"", ... ]，就是对这些区域 (row) 怎么排序
HR 反馈说某一个case study不是很好
Full Details
First Round, Case Study
纯聊天
先问了问 project dive deep
然后一个 case study system design，post purchase recommendation through email
Final Rounds
第一轮 BQ
第二轮 case study, 聊在google search上怎么做 bidding，price该怎么计算
第三轮 Python coding, multi armed bandit
第四轮 ML system design, 在 product 界面，rank rows of [""Compare Similar Items"", ""4 Stars and Above"", ""Frequently Bought Together"", ... ]，就是对这些区域 (row) 怎么排序
HR 反馈说某一个case study不是很好
About This Question
This is a candidate experience report from a wayfair interview for a swe role (newgrad level) during the onsite round reported in 2026.
It covers the following topics: System Design .