>If you were hiring, can you tell me why you might not even do a phone interview? Ph.D. in AI will probably scare off anyone who has a typical business app development or integration job. It's just hard to imagine someone with this level of education grinding out bugs in garbage legacy code, or calling vendors to ask why their SOAP web service doesn't work according to documentation. Now, whether you would even care…
Yes, the OP happens to be 60. But there is no reason to speculate ageism based on just that. May be he / she has a 4-page resume. May be he is applying to series A start-ups. May be OP has switched a few jobs in quick succession recently. Too many unknowns to provide any answer.