Quote from sunny:
I have recently worked as a physical trader, that's what your potential job sounds like. And if it is mostly shift work.
Having been in the bank's trading floor before I can say that this is very different from the like of Wall St, or London City. In essence it's operating job rather than trading. Similar to my friend who is shift technician in a telecom company, for instance.
Depends on the strategy of the team, most of the time this "operating" is not to speculate for profit, but to preserve the company's existing revenue and trim out risk. So in the interview it is important NOT to say blah blah about speculation, taking big risk, or get out there and beat the market. Behave as if you are interviewed for an interesting engineer role that combine technical and commercial, not a wild financial job the like of Liar's Poker.
Good luck