Who are the team members of the project?
That depends on your context of team. There are many of us volunteers; although only a select few actual 'employees' of OKCash.
As for the Volunteers, we have so many different 'departments' to increase awarenes of OKCash and whatnot; I could not tell you...
Take a look at the Development & Tech Discussion forum, look at the users who post the threads (Like Toshi for example) to see who are a bit higher on the hierarchy than the volunteers.
As for a full list; I am not sure if one is available?