Meta Software Developer interview questions

I got a phone call from a recruiter one day after I applied online. She asked me general questions about my experience and expectations. Onsite interview happened about 10 days later. I only talked to one guy, he once again asked me about my experience, about what I like about FB. Then he asked me one coding questions: given is a binary tree, write a function that returns Lowest Common Ancestor of two given nodes. After I did that, there was some time when I was allowed to ask some qustions about the company/team/ etc. Next day I received an email saying they have no position for me.

Was referred by an employee and then contacted by an HR. Had 3 rounds of phone interviews and then was called for onsite interviews. The questions were aimed at testing coding and design skills. They are looking for people who can write the correct code at the first go. So my advice would be that you revise all the basic algorithms, look at the common interview questions and practice a lot of coding on paper/whiteboard. The level of questions was not as difficult as Google.