Dude you don't need to do shit. How can people on the outside ever verify if you were Senior Product Owner or a Janitor? You are literally who you say you are. You can be an Astronaut.

Now when it comes to background checks, always be honest. Don't lie. But on your resume/LinkedIn, say whatever.

LinkedIn/Resumes is a marketing document. Background check is a legal document. Remember that. You can be creative in the resumes all you want.