I learned to code when I was 30. I was already employed at a technology company to monitor the network. So that was definite plus.

12 years later, and 3 more companies and I'm a software architect with a major vendor on a team where I'm about in the middle "age" wise.

The only time I ever felt that age played a part was an interview I did for a company that was in start up mode with chief architects that were about half my age. I had no problem walking away from that one.