I interviewed with this company six months ago. Had multiple 3 rounds of interview, and reason recruiter gave me was they didn't think I was "enthusiastic" about opportunity/company. Who interviews with a company on 3 different days and is not enthusiastic about opportunity, I don't know if they are all looking for some key word , that candidates are supposed to utter. They I found that they hired a fresh graduate for this work, where as I am engineer with 20+ years experience, so most probably this was case of age discrimination, which is hard to prove. But I would avoid this company if you value your time.

Replied to an online ad for software engineer. Went through phone screen and was contacted for a phone interview. The interview went well and was contacted on a Friday afternoon about proceeding to the next step in the interview process. They wanted to do a 5-HOUR interview using Google Hangouts. On Saturday I emailed a suggestion to split the 5-hours over 2 or 3 days because 5-hours is large block of time to allocate. On Sunday I received an email that said they decided to go forward with other candidates. So, seems to me, that since I couldn't allocate 5 contiguous hours for an interview, they were suddenly no longer interested. Their normal process is to split the interview into 2-hours on the phone and a couple hours in-person onsite. IMO: not very professional interview process and probably not a very professional place to work. I'd skip it if I were you.