"DevOps enables coordination and collaboration between formerly siloed roles like development, IT operations, quality engineering, and security." -
https://learn.microsoft.com/en-us/devops/what-is-devopsIt's not a job title, it's an engineering practice. People who participate in DevOps include "software engineer", "network engineer", "IT operations engineer", "platform engineer", "cloud engineer", "quality engineer", "security engineer", "manager", etc.
I'm also one of the people who does "operations" but has a DevOps job title. I've grown to accept this as a second definition, it's quite common now.