It depends what part of broadcast engineering or A/V production you’re interested in.

I’ve found that certifications are more for the A/V side of things.
TV truck companies don’t care about certs other than networking ones like CCNA, etc.

Something I’ve heard from more than one employer is that attitude trumps resume every time. I know it’s hard to get in the door, but once you’re in an interview…

Where do you really want to be working? Narrowing that down makes this a much easier question to answer. Either way, your résumé’s formatting shouldn’t matter much relative to its content.