Meta Data Scientist interview questions

The interviewing process was disorganized and unprofessional. i first received an email from a Recruiter from the Product Analysis team. After a screening on the phone, they set me up with a technical interview with a Data Scientist to assess my Python skills. First, the Data Scientist scheduled didn't show up to my interview. They had a replacemen who I could tell did not want to be there. Aside from cursing in the interview, he was the kind of guy who nitpicked at code that was functionally the same but not the way he would write it. An example would come to mind is using if/else vs. if/elif. At the end of the interview, I have never seen anyone try to get off the phone as fast as him. It ended like "I gotta go" "Ok" "Click." That ended with a rescheduled phone interview because I wasn't assessed any of my skills. The second phone interview went well, but because I didn't use SQL and insisted on using python they decided i "am a better fit for BI." Well this is the part of the process that angered me enough to write this review. They transferred me to the BI recruiter who had a screening with me. Keep in mind we are now at 4 phone interviews. He tells me he will set up a phone interview early next week. One week and 2 emails pass by and he is completely missing in action. No response to any way I try to contact him. If I have one pet peeve with Recruiters is when they lie to and/or ignore candidates. In my experience with Facebook, I had both.

Submitted resume through employee referral. Received call from recruiter about three weeks later. After initial phone screen with recruiter set up phone interview with two people there (back to back 30 minute one on one interviews). One of the interviews was on analytics - a statistics questions and measuring the performance of their products. The other was technical, involved sorting list. Like 8 days later, recruiter got back in touch with me saying they were going to bring me on-site for an interview. They set up a flight and hotel room for me. On-site was five one-on-one 30 minute interviews. Two technical, two analytics, and one on product. Really seemed interested in how I would measure performance of Facebook products and use data to identify problems. Interviews set up to run from 9:00am - 11:30am. They just grabbed me from the lobby at 8:45, put me in a room that the interviewers came to, then dropped me back off in the lobby after the last interview without showing me around at all. Friend came down to get me afterwards to give me a tour and grab lunch. Recruiter said would let me know decision within 2 days but no news til 8 days later. Didn't get an offer. Overall, experience was pretty good though the recruiting staff seemed overworked and often missed their own deadlines.