How many hours can I work as an international student in Germany?

A German study residence permit allows part-time work alongside your studies, but it is meant to stay secondary to your education, so the hours are limited.

During a study preparation period the permit allows working up to 20 hours per week, and during the studies themselves you can take part-time student jobs to a limited extent. Working beyond your allowance can put your residence permit at risk, so it is important to stay within the limits.