A recruiter had contacted me in the past, I decided to go ahead with the process now. Had first technical screening interview, I opted to do at Menlo Park office instead of phone. It was purely data structures and algorithms. He gave some hints which I did not take in first go but I did understand and solved the problem, so he gave mixed feedback, I was asked for another screening. Did it again at Menlo Park office. It went very well and I was invited for onsite. During onsite had 4 interviews, 2 coding, 1 behavioral + small code and 1 system design. At the end of system design, the interviewer said Good job. I did pretty well in the coding rounds too, Each coding round, I could solve two problems which is a good sign as per whatever I had heard from friends. But, I did end up getting rejected. Well, rejection is a part of interview process but the frustrating part was the feedback. Recruiter said unfortunately we cannot proceed with the offer as your system design did not go well. I was shocked and realized from the other glassdoor reviews I had read that it is the standard response they give because it is an open ended question. My coding rounds went very good so she couldn't say those were the bad ones. I told the recruiter that it is contradictory to what happened and she had nothing to say except for - we will ask our engineers to not give any verbal feedback. What the hell!!! Is this what you expect from companies like Facebook. Don't waste your time interviewing here if you don't have relevant work experience (I don't have that). They will reject you with system design feedback. Crap!!