Two rounds of 45-minute phone interview. The questions were similar to those described on Glassdoor: tell-me-about-yourself type questions, some medium-to-hard level SQL, and product sense questions. The product sense part was hard to answer, since there're few resources to prepare.
Interview questions [1]
Question 1
How would you tell whether a new feature X is beneficial or not
I applied online. The process took 3 weeks. I interviewed at Meta (Londres, Inglaterra) in Aug 2017
Interview
It started with an introductory phone call, asking about my background and interests, and telling me about different projects they're working on. No professional questions. Then there was a 45 minute phone interview with a coding question and then a half-day set of on-site interviews.
I applied through an employee referral. The process took 3 weeks. I interviewed at Meta
Interview
I got an internal referral and the recruiters took it from there. They were very courteous and prompt in their email responses. They sent me a long prep document that very clearly laid out what you will be tested on, along with some sample questions. The actual interview aligned closely with what was said in the prep documents.