hello. i am about to graduate from my masters in quant. finance and have had offers from sig trading in dublin, citi markets mathematical finance sales and trading in london, chicago trading in london, optiver trading in amsterdam, tibra trading in london, and credit suisse risk methodology quant.which would you pick? i'm leaning towards sig for their strong assistant trader program. anyone have any idea what sig's operations are like in dublin? and what are the exit opps like after that?