>> I became CTO so I can solve this mess properly, I don’t hire devops, I hire infra engineers, build engineers, release engineers and: backend engineers. This

>> I became CTO so I can solve this mess properly, I don’t hire devops, I hire infra engineers, build engineers, release engineers and: backend engineers. This makes a lot of sense, but you need to realize that this is only a tiny part of a successful organization. There are many setups like that which you describe across many industries that have failed reasons beyond the role definitions. It's not enough to establish the organization. You have to keep the behaviors in check over time when you hire a build engineer with different aspirations.