That is laughable. While age doesn't really matter, true senior talent doesn't even begin until someone has worked for at least a decade, which puts most people in their early to mid 30s
Well, I'm considerably past 35 and still being hired as a tech developer. Mostly at high $$ to come and fix the problems that young 'uns have created in their wide-eyed naive blithering and fawning over fancy new doodads.