XPIENT Solutions Software Engineer Contractor interview questions

Phone interview first that lasted about 20 minutes. Just general technical questions. They put me in a room with two engineers, and then placed me in front of a live debugging session of some of their in house custom code. They had the debugging session projected on a large screen. They explained a communications program they wrote in house for about 20 minutes or so. I was expecting general questioning regarding their communication system. Instead of general questions regarding the functionality of their system they ask me to modify the program by adding a new feature to it while they watched. Had I known in advance what they were up to I would have cancelled the interview. I go the feeling they were looking for a pure coder type who happen to be versed in exactly what they did there. I don't think they had much interest in integrating people into their environment. I thinking they were looking for a tool not a professional.