I applied online. The process took 4 days. I interviewed at Optiver (Amsterdam) in Apr 2024
Interview
The OA was a straightforward procedure with 3 steps.
1) DS&A round, 2 hours for 2 LC hards. Basic concepts, just a lot to read and a lot to write code wise.
2) Multiple choice questions. 20 min for 20 questions. Required pretty deep knowledge on multi threading, networks, algos complexity, and OS.
3) Zap-N - a set of mini games to check for reaction and risk management.
Interview questions [2]
Question 1
DS and Algos - when to use what, complexity and most optimized way to use them.
I applied online. I interviewed at Optiver in Feb 2026
Interview
As soon as my CV reached them, I had 7 days to complete a HackerRank and 2 more tests. It took them from Monday morning (when I submitted the coding test) to Wednesday evening to reply.
Interview questions [1]
Question 1
Was a Hacker Rank average but difficult, then a CS questions in multiple choice and finally some kind of minigames.
After I applied, I received an online assessment shortly. It was hacker-rank styled. I had only 2 choices of language - C++ and Java. A bit difficult than average, but doable with a lot of practice.
The original assessments consisted of:
- A coding test (1 hard question) which takes approx. 75 minutes
- A coding knowledge quiz
- Zap-N, a set of short neuro assessment games
Interview questions [1]
Question 1
The coding test question was very difficult. Required a great understanding of data structures in programming and problem solving