I don't require applicants to have memorized frameworks, APIs, and other implementation-specific details in my interviews. I ask general programming/computer science questions that get to their level of knowledge. I also have them do a programming test before they come to the interview, and allow them to do it in the language they prefer. Age generally hasn't been an issue, but most applicants are younger.
I think this will become a bigger and bigger issue as the programming industry really starts to mature and you have a large number of developers that never wanted to move into management.
I think this will become a bigger and bigger issue as the programming industry really starts to mature and you have a large number of developers that never wanted to move into management.