If you've not read The Manager's Path by Camille Fournier, you should.
If you are interested in talking directly with a head of eng who's been around the block, hit me up (email in profile) and I should be able to get you in contact with a woman who has gone from a teammate to lead to manager to a sr manager to director to sr director in a company that went from 30 people to going public with a few hundred people to being acquired and still growing to over 5k people, and who is now taking over eng at a smaller company. They are busy, but I could share your contact info.
https://www.amazon.com/Managers-Path-Leaders-Navigating-Grow...
