I applied online. I interviewed at Datatron (San Francisco, CA) in Sept 2016
Interview
Typical startup interview process. 2 coding phone screen followed by 3-4 onsite interviews. Prepare well for coding. There will be data science round as well, where you will be asked real world problem. The solution is open ended. They focus on your thinking and speed to solve the problem
Interview questions [1]
Question 1
Given an array of size N, find the pair of integers whose sum is equal to given sum?
Given a stadium, how would solve the seat price optimization problem?
Given a very large data file ~TB, what is the best way to copy from one data center to another?