I applied online. The process took 1 week. I interviewed at Optiver in Sept 2017
Interview
Couple of days after applying I received invitation for online HakerRank test. Test lasted 150 minutes, after few days I received an information via email that I am not invited to the next stage.
Interview questions [1]
Question 1
Object-oriented and algorithmic programming questions plus few theoretical, multi-choice questions from C++. The first two questions tested the basics, while the third one was more complex and consumed majority of the time.
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
