So far in my career:

- DevOps Engineer (Junior, Senior, Staff)

- Systems Development Engineer

- DevOps Team Manager

- Cloud Infrastructure Engineer

- Site Reliability Engineer (+Lead)

All have been meaningless except for Cloud Infrastructure Engineer. The rest described a generalist who knows how to deal with ambiguity and (usually) has the trust with things like AWS root account credentials. Most organisations have no idea what real DevOps is. If they did, they wouldn’t hire for a “DevOps Engineer”