I applied through other source. The process took 4 weeks. I interviewed at Citi (Budapest) in Oct 2018
Interview
The process took only a few weeks, I had one interview after a short phone call (HR asked about basic derivatives), got the offer a week later. Very fast and simple.
Interview questions [1]
Question 1
What are the main differences between commercial and investment banks?
What are futures and forwards?
Why do you want to be a product controller?
Some simple brain teasers and greeks.