[arnvald]

I've worked as EM for a number of companies, and even though I'm quite experienced in this position, joining a new company as EM is always quite overwhelming - it would be even more difficult if it was my first time in this role.

So like others say, do it within the same company. You already know people, you know the culture, you know the processes, you can focus all your attention on learning how to be a manager. And it's quite a different role than being a developer.