I have a friend who's a similar ultra-confident self-promoter. He can talk herself up till the cows come home and is exceedingly good at playing the corporate ladder - he gets pay rises and promotions and jumps ship to a new corporate machine every 2 years to maximise his earning potential. But you ask him what he's actually achieved and its... very little. It's projects that didn't work and were canned, or that were delivered late, or things that worked but were hugely over budget and not really used/sold in the end. It baffles me how wasteful these big corporations are, but that's another issue. The thing is he'll just talk about how successfully he managed these things, and skirts around whether or not there was any good to come out of his work. Clearly he's excellent at BS in interviews!

He's also a self described sociopath and is very happy to use other people for his own gain, and step on people to advance his goals. I'm sure he'll go far in corporate culture. Is it surprising that he works in finance?