Optiver Interview Process?
So I passed the online numerical arithmetic test for Optiver (by the skin of my teeth!) and now I have a phone interview for a campus hire execution trader position coming up soon. I've been told it's an "informational interview" with HR, from what I've gathered it's also something of a behavioral interview.
Does anybody have any experience with Optiver's interview process? What kinds of questions do they ask?
Also can someone describe to me the difference between an execution trader and a derivatives trader? I know Optiver hires both straight from college but I'm not exactly sure what each entails.
Lastly, when answering a question like "why trading?" or "why are you interested in Optiver?" how should I answer? I.e. are they looking for someone who's driven by money? driven by competition/winning? Just likes to think fast on their feet with problem solving/math skills? Should I seem like I have always wanted to be a trader? Or should I seem like it's just a career option that I think might fit my skills and aptitude?
Yeah, I'm new to all of this (finance, trading, etc.). I have an educational background in mechanical engineering and worked in huge F500 companies the past two summers as an engineering intern, so I am quite lost in the world of trading. That said I definitely do think that I'd enjoy the fast paced and quantitative environment of trading much more than engineering as a career.