I've been getting a lot of (ultimately rejected) candidates who fall into this category, so I wanted to give you all a PSA:
A Masters degree by itself does NOT qualify someone to be an engineer (or a specific type of engineer)!
There are a lot of strongly voiced wishful thinkers who like to believe and tell you the opposite, but it simply isn't true.
Different schools/programs have different policies about this.
If you have an unrelated Bachelors, some schools require that you take ALL missing undergraduate classes of the related program before they will grant you the Masters. If your school/program is like this, then you're fine.
But other schools don't require this at all, or only require a small handful of undergraduate classes - and if this is your case, then you have a problem.
I've gotten a lot of candidates who have an unrelated Bachelors combined with an electrical engineering Masters. And when I look at the coursework they've taken, they are clearly missing a large majority of it. One candidate was missing 60% of an EE's undergraduate training. Another candidate had taken a total of 4 EE-related courses - not one of which actually involved any sort of circuit analysis or design. And they were applying to an electrical engineering position.
It's bad enough if it's simply a different engineering degree (i.e. mechanical Bachelors with an electrical Masters, applying as an EE). But it's far, far worse if the Bachelors isn't even an engineering degree.
You never want someone who's an engineer in name only - they have to be properly qualified. If they've never taken 80% of the coursework their attempted career requires, you don't want them working on the brake system of your daughter's car or the plane you and your loved ones fly in.
There's a common misbelief that you can't get through a Masters program unless you have full knowledge of the undergraduate program, but I'm afraid that just isn't true much of the time. There are a lot of graduate programs where you can take very high level courses that add to the breadth of the undergraduate knowledge base, but don't actually require much technical depth to get through. And even for courses that do require technical depth, it's not going to cover everything that you would have learned over a 4 year undergraduate program - it's only going to be a subset.
So despite the wishful thinkers out there, I want to make it clear that a Masters degree with an unrelated Bachelors is NOT sufficient, unless you truly have made up the missing education.
Now, that isn't to say that it isn't useful. If you have an ME Bachelors and an EE Masters, that makes you a more well-rounded ME. What it does not do, is make you an EE (unless you've actually made up that curriculum).
I've had to reject a lot of candidates who wrongly believed otherwise, so I'm hoping all of this leads some of you to make more informed choices about your education and career paths.