I'm 43. In my late 30s, I was worried, too. But, what surprised me was just how much impact turning 40 had. At 38, I was averaging maybe 10-15 software employers contacting me a week. Now, it's dropped to maybe 3 a week. And, the quality of recruiters has dropped, too. Just a few years ago, recruiters from well-known companies would contact me directly. Now, I only get recruiters from no-name recruitment firms.

Of course, a lot of other factors may be in play. Maybe recruitment just isn't as strong as it was a few years ago.

I'm currently interviewing currently in SF. It's a painful process. I can't tell if half of the companies are even serious.