> I'm very much a "builder" type dev that has more fun going from 0-v1 than maintaining and expanding scalable, large systems.

Most prefer a greenfield project.

I don't know, the majority of my colleagues have no idea how to do anything in a greenfield environment. They need guardrails.

My best projects have all been greenfield. The worst were a few years old but required tons of maintenance unrelated to the core product. Example: one place built their own ORM. Twice.