Meta Developer interview questions

2 Onsites to replace phone interviews since I'm local. Was contacted by a recruiter to interview. Was not sure I was interested but figured it was worth the experience. Office had a pretty immature, unprofessional vibe to it. Maybe more for young people just coming out of college?

applied online. Contected by recruiter for initial screening in facebook office. When to local fb office, where I waited for few minutes after getting to reception. First, recruiter gave tour of center and talked about perks and then took me to conference room, where I met interviewer whole first discussed about my past projects and then jumped on coding question.