I am an expat, non-EU citizen working for a Dutch company in Netherlands under "Highly skilled migrant" residence permit for over 3 years now. I want to change my job, but the company is US based and of course not "recognised sponsor", which is required for my residence permit. I am not US or Japan citizen either.
So only option is to work for them as a contractor. For which I might need to become a self-employed or work via a umbrella company. Recently I have found out that "Highly skilled migrants" can be self-employed in addition to their main job. But it does not mention to what extent, can I fully be self-employed and leave my current job? Or can I keep both and have two jobs?
Also some places in internet mention that it is advised to have more than one client, to be self-employed.
So I was hoping that some of people here may have experience or knowledge about this matter.Is it legal to be self-employed and still be "Highly skilled migrant", do I have to keep my current employment for that? Can I work for both companies?
For umbrella company, do you know of any good ones? the top result in google "dutch umbrella company" does not reply my emails and does not answer calls