The problem isn't that your work is meaningless, the problem is that you just haven't done anything meaningful, yet...
And if you don't do it, then no one else will do it for you.
Here's the thing...
The majority of the companies out there don't hire people to do meaningful work.
Sure, some might.
But the majority of the companies out there hire people first and foremost to be able to keep running their companies.
They hire people to get stuff done they would otherwise not be able to get done.
Which is rarely meaningful...
So if you want to do something meaningful (because you feel like your job is meaningless), then you've gotta stop waiting and start doing something meaningful yourself.
Whether inside a company or outside doesn't really matter.
It really is as simple as that.
But of course not easy...