mid 30s? you're at the top of your game, mentally. I'm mid 40s and the memory is definitely a bit shot. There are other factors in my situation as well, but past 43, you start sensing it.

I can certainly still program, but interviewing...I'm tired of it. Tired of being asked picayune questions like I just graduated. Maybe I should I change my CV title from 'Senior Software Engineer'... that actually implies 30-something, late 20s. but what? "Part time CTO and dog's body for a few small startups/companies"?

I know I can do most anything I put some effort into, the relearning process is not hard. But everyone wants a warm body they can immediately plug in. I get interest due to my CV, but they want to stick me into jobs I'm too senior for. I need to figure out what to change... or tell recruiters, no absolutely not, no more front end work, ever!

well, my advice is start planning your career change now - I wish I had 10 years ago, instead of merely idly thinking about it.