Already working at a German company but can i get a Blue Card?

Usually one can get an Inter-company transfer work visa in such a situation, which is what I assume you are having now. Whether you qualify for a blue card depends on if you meet the qualifications which are stricter than just for a work visa. And this subject has been covered extensively on this forum. But unless you plan to stay in Germany, why bother? Even having unlimited residency or a settlement permit doesn't allow one to then stay off for an extended period of time. A blue card will mean one gets such status faster but it is still not permanent - unless one actually nationalize eventually as a German citizen. But you would have to give up your Turkish citizenship to do so.

As far as I know, there is no way to get any residence permit (incl. blue card) without being physically present here. And why would you bother to get a status that involves paying high German taxes and social security contributions if you aren't living in the society that benefits from this???