Pros
Ability to work with the people from across the globe. Ability to learn finance and investment banking business. Stable work - once you're in it's very hard to get fired. The deadlines vary depending on the project but on average are realistic and reasonable. Remuneration generally above the market average. Easy way to stand out among others. Ability to work with the new technologies and learn from the good specialists, although it heavily depends on the project/area. Good benefits and learning opportunities, like Coursera, O'Reilly, Safari.
Cons
Little-to-no career growth opportunities unless you're willing to wait for a 5-6 years, generally you shouldn't expect any promotion or significant salary raise regardless of the performance or the responsibilities. Annual performance reviews aren't completely fair, hearing from your superior something like "I wanted to give you higher rating but my boss told me to give you this" is quite common. A lot of bureaucracy, which heavily distracts from the main responsibilities and complicates the processes. Conservative environment and strong opposition to the changes, unless pushed by the senior management. Day-to-day work only on the virtual machines, which are slow, buggy, unreliable and inconvenient.