I applied through an employee referral. I interviewed at Meta (Menlo Park, CA) in Aug 2017
Interview
After initial phone interview i passed phone coding interview (got 2 simple coding problems). Than in 2 weeks proceed with on site interview. It lasted more than 5 hours with 45 min break for lunch. Started with 2 coding sessions on whiteboard than design and architectural interviews, behavior interview with coding question and closing coding interview all with different people without any gaps between.