How Effective CTOs Embrace Change (firstround.com)

Great insight into the changing landscape of a CTO as a company grows through rounds of funding in the first several years.

My experience (Series C, ~130 employees) echoes many of the points in this article.

This resonates. My cofounder is the CTO for our company and I see his role change the most between the two of us. It's almost like he has to reinvent himself constantly.