In Russian, you could use the verb "лизать" with roughly the same meaning, like this:

"Он подлизал боссу чтобы подняться по карьерной лестнице."

By the way, in English, we use the verb "suck" too, similarly with little to no erotic meaning at all. I can't resist quoting this brilliant saying,

The army is like a joint - the more you suck, the higher you get.