There's already a name for this.

Drum Tech

or

Percussion Tech if orchestra.

There`s already a name for automobiles, but we call them cars !i

Nope, it's got to be changed from "tambourier." Sounds to much like "cowbellier."

A fitting title: The Domino's Pizza Delivery Boy

Falling Do

How about "Drumologist"

Dreek?Falling Do

Uh, no I don't think so. Drum tech is someone who sets up and breaks down drums. It's not someone who restores them or builds them. That is simply called a drum builder. But if we are looking for something more glamorous then I'd go with Matt's suggestion; Tympanier.

Luthier is far from universal, so it isn't the best example to follow.

The word luthier originated long before the existence of the guitar or violin and was a descriptor for someone who made and repaired lutes, by far the most prevalent musical instrument in it's time. The same person was called upon to repair instruments of similar construction, viols,vihuelas( spanish predecessor of the guitar) and although those two instruments eventually eclipsed lutes in popularity the term luthier stuck. If we were to follow a similar tradition to conjure up a name for a drum builder / repairer , the term proposed by Matt M , Tympanier or since drums are classified as membranophones, a Membranier would be the most accurate.

Most people in the drum world at some time use the term percussion as a more glorious term for their chosen instrument , so I think something including percussion , makes the most sense but I don't really see what is wrong with drumbuilder. Many, in the English speaking world use violin maker ,instead of adopting the French term luthier and in German it is lautenmacher, so that term is language specific. I don't know for sure( help out Ralf) but perhaps there is a term schlagzeugmacher in German?

Drum Tech is the best, John Aldridge is called that. Drum Tech at REO Speedwagon, Owner at Vintage Drum Company and Engraver at Ludwig Drum Company.

So down here it would be a "Drummeroo" I think...

Cheers