I've been offered by my employer support for a move to Luxembourg - trying to gather the documents needed for my work visa. Under the "work permit" section of their official immigration website, it mentions that there's a need for a "diploma" or "professional qualification".
I've been working almost exclusively as a freelancer, which means I have very limited registered work history, and my university degree is irrelevant ( studied Civil engineering, working as a software developer ).
I was told that also 10 years of experience in my field ( which I have ) is enough, but I'm not sure how to provide proof for it that can be verified.
Is there anything I can do in this situation? I'm not sure if online certificates are of any value.