Germany has a parliamentary system of government in which the Federal Chancellor is the nation's leading political figure and chief executive or head of country. In German politics the Chancellor is equivalent to that of a prime minister in many other countries. The role of the Chancellor has varied greatly throughout Germany's modern history. Today, the Chancellor is widely considered to be the country's effective, visible, and powerful leader.

The current German Chancellor is Angela Merkel, who is serving her third term in office since November 2005 (10+ years) and is the first female chancellor. She is consistently on top of Forbes Magazine's most influential or powerful people list. As a female she is #1 before #2 Hillary Clinton. Last year she was Time Magazine's Person of the Year 2015.

However, the President has a role which, while not an executive post, is head of state maintaining a distance from day-to-day politics. The President gives direction to general political and societal debates and has some important "reserve powers" in case of political instability and represents Germany in matters of international law, concludes treaties with foreign states on its behalf and accredits diplomats. Furthermore, the President can only veto a law that he/she believes to violate the constitution.

The German Prime Minister office is presently non-existent.

https://en.wikipedia.org/wiki/Angela_Merkel

https://en.wikipedia.org/wiki/President_of_Germany

More Info: en.wikipedia.org