Pros
There are very few good things about working for Spring11. The casual dress code is probably the only thing that is a true positive.
Cons
There is a complete lack of any leadership within the company. Senior management desperately wants to grow the company, but is oblivious as to what it takes to get the business to the next level. If you are willing to give up any semblance of a live, you can survive at Spring11, but don't expect to be paid for your sacrifices. Unfortunately, the company seems to want Wall Street caliber talent and work hours, but without actually paying Wall Street compensation. Everyone I worked with true talent and potential has left the company as quickly as possible with some even being willing to pay-back signing bonuses in order to move to a better place. If you have any hope of working for a respectable company focused on commercial real estate, you will regret working at Spring11.