Probability theory + mental math would be good to know
Quantitativer Trader Interview Questions
1,133 quantitativer trader interview questions shared by candidates
I only remember interesting question. Here is one sequence question: MVEMJ ? It's the order of the planets. I didn't solve it, but I think it's a good question.
Why do you want to be a trader?
Which start date do you prefer? What's your salary expectation?
Questions were mostly very standard trading interview questions (think games and stats etc), really enjoyed my time doing them.
Why are you interested in this position?
Previous work experience - a very deep dive on this. Technical rounds on how I think about a given trading problem. Personality rounds?? - "How have I overcome tough situation in work?", "What is one situation where I disagreed with somebody?"
How can you build a dataframe
How to backtest a trading strategy
What data structures have you used?
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