I have worked with it a lot, but wouldn't consider myself "an expert" like I would with MySQL. But we might have different definitions of expert. I'm confident enough to work with it in projects ad have done numerous times, mainly with a C++ interface.
I'm just logging off at the minute but if it is a non-emergency then I'd be happy to help by PM. Otherwise you might want to check out Stack Overflow and ask a question there/search for an answer: