Meta Production Engineer interview questions

Over the phone coding screen, I was asked two fairly easy questions and I answered both of the them well and I understood the edge cases and answered all the questions the interview had about my solutions. The interview lasted about 50 minutes. Sadly I was rejected based on feedback from the interviewer. The feedback stated the second question was fine, but the first question had an issue. The solution I provided wasn't what the interviewer wanted, and the solution that he wanted was different from what the question had asked.

Contacted on linkedin based on Google experience. Fairly long interview process, with a phone screen, then two technical phone interviews, then a full day interview in Menlo Park. Took several weeks for them to get back, too, but they came up with a very competitive offer, and came back fairly quickly when I countered.