Ah. I don't think it was a case of me being too "old" as maybe me being "too uptight" or something along those lines (although I'm still pretty young I guess I've recently slid outside that 20's sweet-spot, and as most of my friends will attest too I'm probably not uptight-enough at times).

It's sort of the reason why I found it to be such a weird response, only because it seems an interview is not necessarily the best place to judge how someone acts personality-wise once they've integrated into a team and become comfortable.

Someone else brought up the age discrimination thing to me, but honestly even if that was the case these are good people and I think as a founder of a company you do need to make the best decision you can for the well-being of the business.