Vantaggi
BlackRock is the biggest fund manager on the block, so it has the potential for great scale and domination of the asset management business. There are a couple of good managers.
Svantaggi
Working in the business may be better, but London IT is a sorry department to be in. Decent senior managers are like needles in a haystack. Every time we have a senior manager addressing us we hear how great everything is but it is normally a case of The Emperor's New Clothes. Central control from New York is a death grip. Autonomy is not tolerated. Experienced people are given trivial jobs to do to "prove themselves". Sharing of information between teams is poor. Documentation is inadequate - the "Aladdin Way" has to be prised from key developer's heads.