I applied through an employee referral. The process took 2 days. I interviewed at Yota (Saint Petersburg, Sankt-Peterburg)
Interview
Quick interview with Manager and then a few Software Engineers. I liked a bit "startup-ish" culture and overall company look. Interviewers seemed to be overall friendly and polite. Interview went well and I was invited to join the team. I was impressed by the speed of making decisions - my future manager asked me to join the team on the next day.
Interview questions [1]
Question 1
One of the questions that I remember was to solve a problem related to probability theory.