I applied through other source. The process took 4 weeks. I interviewed at Meta in Mar 2011
Interview
I had two technical interviews, both on the phone since I live in Europe and all of Facebook's development is done in the U.S. They talk to you on the phone while asking questions, then you code in an online text editor of which they can see the results live as well.
They're very reasonable during these interviews: when you didn't quite get a question, they'll happily explain it better, if your answer is good but not quite there, they'll point you in the direction they want to hear more details about, and so on.
I applied through an employee referral. I interviewed at Meta
Interview
I was invited to take their OA about a week after applying, mostly consisted of leetcode easy and mediums. It was a pretty smooth process, with quick feedback. Good experience overall
Interview questions [1]
Question 1
Data structures and algorithms, leetcode style medium and easy
They ask the normal standard DSA questions that you would expect for an internship like LeetCode mediums. I think there were two rounds of technical interviews before the offer stage.
DS&A questions, interview is just that with only a couple mins of non technical. Need to be quick and fluent in standard leetcode easy-med, and have decent enough grasp to come up with good ideas to approach leetcode hards.
Interview questions [1]
Question 1
DS&A. Asked about how to merge 3 ordered array into ordered array. Then, how to generalise for k ordered arrays. Was okay, but need to be faster and have solution down as if you can do it in your sleep.
