I interviewed at ZeroNorth (Denmark) (Copenhagen, Capital Region)
Interview
Easy enough take home test, but the interview with engineers will be more in depth, and the complexity depends on which interviewer you get.
Nothing too special, should be fairly straight forward.
Interview questions [1]
Question 1
How to deploy my application into a distributed system.
What are the drawbacks of a distributed system.
Explain your API considerations and constraints.