Meta IOS Developer interview questions

Similar to some others, I first got a LinkedIn message from a Facebook HR staff based in India. We scheduled the first phone interview, which is a simple quiz with 5 multiple choice questions, conducted by the HR staff. Afterwards, I had the 2nd and 3rd interview with Facebook iOS engineers, different people but the format is pretty much the same. Each is about 45 min to 1 hour, asked me to do live coding on coderpad.io. I progressed and Facebook flied me from Sydney to Silicon Valley for a face to face interview. It's from 10am-3pm. Touched on many areas including behavioural questions, iOS app architecture, write code on whiteboard, time and space complexity, etc. I did not get an offer in the end but very impressed by the process.

Initial screening over Skype (5 multiple choice questions) by recruitment officer. Two Skype interviews writing code in Coderpad. Onsite interview constisted of four more sessions, mostly of them writing code on a whiteboard, one "culture fit" and one design interview. Everyone was friendly and knowledgable, the entire process was stress free and actually a bit of fun. I wrote a LOT of code during these interviews, doing two or three exercises per interview. If I had to do it over I would code more slowly so as to avoid having to do so many.