I applied online. I interviewed at EPAM Systems (Warsaw, Masovia)
Interview
To start the mentoring program, you need to pass a test which may contain questions about mathematics, probability, programming, statistics etc. You also need to pass English (B2). Then you get to talk to recruiter.
Interview questions [1]
Question 1
You observe discrete random variable and the sample is {-2, -1, 0, 0, 0, 1, 1, 2, 3, 4}. Which is the value of CDF (cumulative distribution function) of 1?