I applied through other source. I interviewed at Meta (Londres, Inglaterra) in Jul 2019
Interview
The first stage is a screening call with a recruiter, then there was an online interview data scientist comprising of two parts - analytical and technical. The analytical part was a case study about a specific new feature and I was asked to give possible metrics and evaluate the feature's performance. The technical part was a SQL type question (which could have been answered also in Python or R). The third part would have been a series of on-site interviews, but I didn't pass the second stage.
Interview questions [1]
Question 1
I was given two tables of friends and interactions on a plain text environment and asked several questions that required joining, grouping, aggregating and doing some other manipulations on the data to get the answer
One phone interview and 4 rounds onsite interview: SQL (two questions), statistics question, case study, Facebook group related question etc.
Got feedback within a week. Overall the interview questions are at middle level.
I applied through a recruiter. The process took 3 weeks. I interviewed at Meta (Menlo Park, CA) in Apr 2018
Interview
There were 2 product interviews and two data interviews. Standard stuff- how would you test a feature, statistics and probability, SQL questions. Monty hall type questions and some that can be solved through inductive reasoning.
Interview questions [1]
Question 1
If you had to design a feature for YouTube, what would it be and how would you test it?