The job was mainly to be responsible on the reports that Facebook gets for the region that I will be covering (MiddleEast - Arabian Peninsula).
I applied online, then I got an email after few hours and asked to finish an online assessment. The assessment was divided into two parts. The first part was mainly IQ questions, and the second part was an essay question. The answer of the essay should be written in the language you applied for (Arabic in my case).
After couple of days, the recruiter contacted me for screening interview. The recruiter was nice. The question were mainly general. She explained the position what I will be doing if I get accepted. The question were the usual 'Talk about yourself' and other questions from your CV. Know your resume very well. Be careful with the dates that you are providing. After the interview I got another email from her in approximately a day, she scheduled an interview with a teammate that I will possibly work with in the future. She gave all the support necessary for the interview. She even gave me a list of possible questions that I should expect during the interview. I studied very hard for those questions. I surfed Glassdoor for previous interviews, and believe me it helped. After couple of days, I got an email to schedule another phone interview. I got the call from the potional teammate. The interview held in the language I applied for (in my case it was Arabic). The questions were specific about Facebook this time. For example: what are the main policies that Facebook have.
You need to study everything about Facebook. (Products, watch old conferences, policies... etc).