If yes, what specifically drives that fulfillment?

I often notice a dissonance when people claim they love their jobs. I suspect that for many, if the financial necessity were removed, the passion would fade quickly.

That said, there are absolutely some who find genuine enjoyment in employment versus those who see it as a means to an end.

If this is you, is it the specific problem space you work in? The structure it gives your day? The social connection?