Hi,
the biggest problem i see is, that you have to speak german. You have to know at least some streets and have a vague orientation. Per Velo is in the mean ´time a small company and can´t afford it, when there is a messenger that needs twice the time a regular meesenger would need. You are not payed per job but per hour, that is the problem.
You´ll find per velo at
www.per-velo.de or at 0761/75075 ask for Wolfgang Fischer or speak to a dispatcher.
Greetings, Daniel