There is a visa for people who already have a degree and just need time to go and find a job opportunity. Nowadays jobs are offered by the internet and most of the auditing is done by internet. But really to get to know your employer or him to get to know you, you must be present for a job interview.
The German Residence Act now offers a variety of jobseekers visa. Requested is a financial background to support your health insurance and cost of living during job search, since you are not allowed to work during your stay.