本帖最后由 BarbaraC 于 2020-5-6 08:44 编辑
最近自己面了亚麻的BIE(Business Intelligent Engineer)岗,目前2轮电面过了,在等Video Onsite。之前总结了一下最近两个月的一些电面面经,整理如下,和大家分享顺便求人品。这个一直还open有招人,感兴趣的可以去投。
Amazon BIE电面一般是2轮,每轮1小时。一般情况,都是2轮tech,也可能1轮tech + 1轮HM。如果是tech轮一般考的内容是:自我介绍(5分钟),BQ(10-15分钟),SQL(15-25分钟),Case Study(10-15分钟)。如果是HM轮(Hiring Manager),一般就是给你介绍介绍组,然后纯聊project和BQ。
下面我按不同section,分别列了一下近2个月,我搜集到的亚麻BIE岗的BQ、SQL和Case Study考到的问题~
一、SQL(大部分考的都是跟订单相关的1-10,概念类的问题写在最后16)
1、几个customer,每个有好几个order,取他们日期上的第一个,然后求sales的平均数。
2、一个Order table (customer_id, order_id, quantity, price, date), 问: a. insert duplicates into a table Duplicate b. remove duplicates from table Order
3、给Orders, 就基本的 order_id, order_day, quantity, unit_price, product_id, product_group a. 找出每个product group在 July 2015的revenue (revenue = quantity*unit_price) b. 找出每个product group 中销售数量最多的product
4、一样也是Transaction类的 a. 找出products that were sold at least twice in 2016 and at least once in 2017 b. 找出revenue of the products that were sold at least once in 2016 and not sold in 2017
5、Random select 1MM customers on a specific day,找出the first day the products were sold and the day they were sold the most
6、给两个表,Order表(order_item_id, order_id, date, product_id, sales_amount, seller_id, customer_id)和Product表(product_id, product_category) a. find the customers who make purchase on each day in the last 7 days. b. find the customers who purchase electronic product (product_category='Electronics') on each day in the last 7 days.
7-15题,回帖可见
16、概念类问题 - union vs union all - 几种JOIN的区别(多次考到) - 解释window function - CTE和temp的优缺点 - Delete, drop, truncate table的差别 - What's wrong with using average - analytical function有哪些 - rank_dense_rank 区别
二、Case Study(基本上都是和卖货发货相关的)
1、我可以叫supplier发货到一个仓库,我也可以叫supplier发货到两个仓库。问题:我的assumption是第二个的可能性比较大,如果你是BIE怎么证明这个hypothesis是对的。
2、Amazon wants to build a new fullfillment center (warehouse). How would you propose this to stakeholders。
3、问了关于存货管理和logistics的分析,同时夹带问了几个基本的modeling问题。E.g., Data Scientist丢过来一个预测模型,如何判断这个模型是否靠谱?需要哪些数据?可以用哪些metrics?
4-5题回帖可见
三、BQ(重中之重!几乎每轮都考!一定要准备至少4-5个例子!)
1、Tell me a time when you dive deep to solve a problem?what was the outcome and what did you learn?(多次考到)
2、How do you keep learning new things?
3、tell me about a time when you proposed something that didn't work
4、describe a time when you had difficult interaction with stakeholders, How did you deal with it? What was the outcome? How would you handle it differently?(多次考到)
5-8题回帖可见
以上,个人能力有限,只整理了这么多,主要是感觉亚麻BIE方向的面经还是比较少,希望能帮助到大家。❤️ |