BairesDev NET Senior interview questions

I interviewed with them 2 years ago (2015). I took an online test and then I had an HR interview and another call with technical stuff related to the possible project. It was a good experience up to that point until I got the offer. They offered me to work remotely under the Monotributo modality...kind of unregistered employment here in Argentina with no benefits at all. I reject every attempt of contact from their side ever since.