[mkozlows]

If you're in your 40s, and there are no managers younger than you, you're in a very unusual organization.

(But if you're bothered by having a manager younger than you, that's on you; I'm not sure what the inherent problem with it is. When I was a manager, I managed people older than me; now that I'm a senior IC, I have leadership younger than me. Both things are fine.)

[wil421]

OP said if you’re in your 40s and being managed by someone a decade younger than you. That would mean 30s. At my last job there was one manager in his early 30s (promoted at a small company and then switched). At my current org there aren’t any managers in their 30s but there’s more levels. I’m feel comfortable here because my current managers were ex SEs.