Just a reminder that if you want to work for a big player, there are only really two banks to go for in Russia
Sberbank
When it comes to M&A advice, the Russian market is quite diverse. Mergermarket's league table of Russian M&A advisors shows market share spread between several top banks, many of them international firms.
It's a different matter, however, when it comes to evaluating banks by assets. Here, as the chart below from Bloomberg shows, two banks stand out in the Commonwealth of Independent States. They are, predictably, Sberbank and VTB.