Baanyan Software Services Software Developer interview questions

My interview process with this company was kind of strange. The application did show that it was for a software engineer role with pay. Nothing about internship or anything like that. At first it was a normal phone screening; then, you are scheduled an interviewer right after that. The first question I was asked was if I needed a Visa sponsor, I told that I did not, since; I was born and raised in the US. He then continued by asking this position will be a non-paying job and that I will be coding for them just for the "experience". Although my process happened a couple of years back. I still remembered how funny this process was. They target people who don't have their Visa's, They will sponsor your Visa, but in return you give them free labor. It was a red flag coming in and a red flag going out. The interviewer asked me as well if I was going with working for them without pay, and I when I said "nope, not really" he hung up haha