[k__]

Scheinselbständigkeit also takes into account other properties than "only one customer".

There are plenty of freelancers working only for Daimler, Bosch, etc.

Can you decline projects?

Do you control your work times/place.

Do you have to handle on your own authority etc.

[throwaway9283i]

Thanks to let me know the additional conditions. As an employee I wouldn't be able to control that.

[k__]

Btw. I work remote for 4 years now and since last year for US companies.

I just solved that problem with multiple customers, so I don't really have your problem, sorry.