Meta Software Developer interview questions

I got the interview from employer referral. The first interview was a 45-min phone screening, where I was asked about my past working experience, a coding question and a followup coding question. In about 2-3 days I heard back from the HR that I was invited for an on-site interview. The on-site (Uday) interview was also 45-min long, including a discussion about my past working experience and two technical questions, both answered on a whiteboard. Very typical interview workflow but the HRs at FB are incredibly responsible and responsive!