MECP = Mobile Electronics Certified Professional.
Its the national grading on installers so companies know who knows what theyre talking about and who doesnt. But that doesnt mean you know how to install. Its like... you know the tech book smarts but do you know the hands on, troubleshooting, etc parts? That only comes with the field experience. Going on 7 years myself.
Good luck getting that Masters though Roln383LT4. I know guys that have been doing this half their life and have yet to get that level. Myself one of them. But if youre First Class, like I am, then you wont have a problem getting a job anywhere. Just that the Master title you can walk in, say you want the job and theyll practically hire you on the spot.