I am 48 years old and having a blast. I am team lead working in the companies CTO office. I play around with build systems, making everything cloud native (kubernetes) and I get to work on a good amount of upstream open source projects. My company does not see my age at all, they just see me keeping busy and constantly pushing to learn new tech. I would say overall in our team, the under 25's are the minority.
I think you're attitude helps. I still feel like I am a kid in my head and I get massively excited about tech , even more as time passes. There is always something new to learn.