I was a contractor for a few F500 and all of them had separate DevOps teams that we were supposed to interface with; we didn't even have access to the cloud console. But I was also a contractor for few large companies (but nowhere near F500) and we did all DevOps ourselves and had full access to the cloud panel.

Both models had DevOps consultants though - someone who advises the management on the best ways to do DevOps so each developer doesn't do it in their own way & so never-ending discussions about what's the best way are avoided (those didn't write a single line of code).

It’s totally possible. Aside from a stint “embedded” on an implementation team to launch a critical product, I’ve been doing exclusively exploration, architecture, devops, and documentation for the last two years or so.