So it's EU commissar (appointed) -> Foreign Minister of member country (appointed) -> Coalition government (appointed) -> Head of the executive of member country (ie. the king, in most cases) -> Parliament of member country (elected)
Certain member countries don't have very stable coalitions, which means there's always a few EU commissars that don't have the support of their host governments. This is especially true now that Christian parties are in the process of being voted into irrelevancy in a lot of countries (unfortunately to be replaced by rightist and in some cases extreme-right parties)
So, what you said. With one very important difference: there isn't one level of indirection, there's at least 4 or 5 levels of indirection. It isn't very democratic, especially since EU law means these people have law-giving power, power to override the parliaments of member countries (that would be why Christine Lagarde proposed using that power to freeze wages)