I myself lead a software development team. I am 31 and the last two people I hired were almost 50 and they are very good devs.
In my opinion age alone isnt a reason not to hire someone. What is the "common reason" older people are not considered to be hired? I guess because people think they cant adapt or are stuck in some ways in theire thinking. If your future you can show that this is not the case, I guess you are fine :)
Only "REAL" age related reason is (and I have to admit that I myself didnt hire someone because of that) if the person wants to retire in the near future and you think you want to invest your time in someone who will, hopefully, stay longer.