I applied through a recruiter. The process took 1+ week. I interviewed at Mars (Moscow, Moskva) in Mar 2016
Interview
1. Interview with Agency - I received many advice of how to pass interview with Mars HR (1 hour)
2. IQ and EQ tests
3. Video interview which was without an interviewer just questions and You have to answer to Your camera and it was recorded and analysed later by Mars HR (30 min). It was awful.
4. Interview with Mars HR (1 hour)
I found that Mars HR is mostly oriented on personal characteristics (loyalty and so on) than on technical skills.