I want to write an update and some advice for outsiders like me, who read this thread in the future.
I am currently the first without an offer at the moment but there is a candidate that could decline his offer. They have been very nice and transparent so far.
I need to share what I did wrong, in order to help some future candidates in my same situation:
- The first one or two online "automatic" stages, usually on platforms like HireVue, could seem very easy. Just like a pre-screening test. However, they are extremely important and only a small percentage of candidates will proceed further to other stages, with "human" interviewers.
- In particular, it is very convenient to dress appropriately even if you are not speaking to a human, and preparing all the standard behavioural questions in advance with the STAR method. You may want to ask someone who succesfully passed this stage in the past.
- They always state that a knowledge in finance is not required for an internship (it is just a plus, sometimes). It could seem that an algebraist can leave his algebraic structures for 45 minutes, having a nice chat with an interviewer, and then coming back to his algebra with an offer. Well, not really... They actually ask a lot of questions on stochastic calculus, finance (the Black–Scholes model plus some technical knowledge in trading options), programming, as well as probability and some maths. A pure mathematician can easily outstand in maths and probability, but the rest is not something common in our background. If you really want the internship, please take a whole month to seriously prepare all these subjects.
- Start to apply in September, as some banks use to shortlist candidates on a rolling basis.