I used for work for IBM Research for 6 years in that type of arrangement. What you're paid is not "salary", but rather "rate". They're not hiring you, they're s

I used for work for IBM Research for 6 years in that type of arrangement. What you're paid is not "salary", but rather "rate". They're not hiring you, they're signing contract between them and your company. It could be a good arrangement that could evolve into long lasting, beneficial relationship.