Senior developers create more senior developers(gomakethings.com)
gomakethings.com
Senior developers create more senior developers
https://gomakethings.com/senior-developers-create-more-senior-developers/
https://gomakethings.com/senior-developers-create-more-senior-developers/
I became a senior dev in many trials by fire without being groomed by another senior dev or management. I doubt in my world of niche programming anyone can even be a"senior dev" like the web dev space, it's just too fluid of a space.