I can only speak for our company, but I run technical hiring at JTV and will be there presenting. On the other hand, to say that we will hire you "on the spot"

I can only speak for our company, but I run technical hiring at JTV and will be there presenting. On the other hand, to say that we will hire you "on the spot" is probably disingenuous: I think both candidates and our company are better served when we make people go through the full interview process of doing a technical problem, coming into the office for technical interviews and to see what the culture is like, and then giving both the candidate and our company a day or two to think about it. That being said, of course it is our full intention to move as quickly as possible.