I applied online. The process took 2 weeks. I interviewed at Flow Traders (Amsterdam) in Apr 2017
Interview
The first step consists in 75 mental math question in 10 minutes.
The cut off is 60% min where the first 30 quests are simple (12*7 ), the other 30 are harder (88*0.0625) and the last 15 are guess estimation (17455*0.13 and you get 3 multiple choices)
First was a mental maths test of roughly same level as Optiver 80 in 8. Then had a 1-1 interview with HR, did not pass as had not researched company well enough.
I applied online. The process took 1+ week. I interviewed at Flow Traders (Amsterdam)
Interview
I passed the online mental math test, then got eliminated in the second round which was an online interview with HR, where I was asked to play a market-making game in which I had no previous experience. Although it is a junior position, you are still expected to have plenty of technical knowledge.
Interview questions [1]
Question 1
Do you know any ETFs? How are they priced? Do you know the current market price of the ETF you mentioned? Let's play a market-making game with that ETF
First round - math test, second round with HR on behavior questions, then with trader and HOT on more technical questions, do not expect deep knowledge on ETF. In general, it was not in a very harsh environment
Interview questions [1]
Question 1
How would you hedge your trade if you buy stocks in Samsung