Ask HN: Which tech stacks and business domains are more age-friendly in IT?

I'm afraid that IT is quite aversive to devs of older ages. I do not seek to understand why and to what extent that is true but I am starting to bump into it.

I think though that there might be specific tech stacks, business domains and roles that might be less aversive to older age and even actively seeking employees in age brackets of > 40 yrs old.

So, the question is, you have seen such patterns?

Thanks