Chartboost Senior Data Science interview questions

They were very fast with all communication. For me there were 4 rounds of interviews: 1. general talk with the recruiter 2. Data Science talk with the Director of Engineering about previous projects you have done 3. Live coding session in Hackerrank. There were a total of 4 questions and a minimum of finishing 2. 2 SQL questions which consistent of creating a query with several conditionals and returning a result. 2 Python questions, of which I only did one. The python question was about a tuple and you had to create a loop with multiple conditions. 4. talk with a project manager (I did not get to this round). This seemed to be role for data scientist that know very well how to code (by heart), which for me was a bit of a pity because Data Science is a lot more than only coding.

The recruiter was very gentle and the manager was awesome. the manager spends a good time explaining the process and the projects they are working on and they allow for questions