GetNinjas Full-stack Web and Mobile Developer interview questions

The whole process took 3 stages which the last was the all morning day. At the first stage I had a interview on Skype with CTO which we basically talk about my experience. At secondly stage I was given a front end test to deliver a javascript module that must connect to an API having a list of fields, my javascript would by able to ready this JSON and display all theses fields as HTML. It was not a hard but exhaustive test. At the final stage, I had an in personal interview split in 3 phases at the company. Firstly I talked to CTO after that I talked to someone from the front end team which asked me some questions about my code test and by the end I talk to someone from Android developers team. I had not any clue about my process progress, although I got a email from CTO after 3 days telling me that I have not fit all exceptions. I got a feedback about their expectations about some someone specialist in some Android Tools which they are currently using. For me there is no point request me a Front End test and decline me because I don't know some Android Tools. It could be a position for Android Senior Developer having web front end knowledge as a plus.