Artificer

An Artificer is someone who makes artifacts. Duh.

...

Okay, I'll write an article.

An Artificer is the gadget-maker in fantasy games. Nerds love 'em because they make quasi-scientific devices in a pre-Renaissance feudal setting, just so they can be magical without using magic. Or maybe because they're furry for steampunk crap.

Aritficers in WH40K

In the grim darkness of the future, an artificer is a dude who sticks his dick into pieces of metal until they transform into a mastercrafted weapon or a suit of artificer armour.

Ork mekboyz are kind of like artificers, in that they build stuff that should not work but does, but it only works when operated by other Orks due to the WAAAGHHH!!!

Artificers in Dragonlance

Gnomes. Every gnome in Dragonlance is an artificer, pathologically obsessed with making devices but cursed never to make a flawless one. There's a legend of a gnome that built flawless artifacts, but one of them was a plane-shift device which got the attention of Takhisis/Tiamat, who snatched this gnome and threw him into an astral oubliette.

This is where World of Warcraft got their gnomes from.

Artificers in Eberron

Eberron wants to be steampunk SO BADLY, so naturally it has artificers. They're basically Wizards that use magic items in place of spells, even to the point where they can gain a familiar just like a wizard but it's called "constructing a golem homonculus."

Artificers in Ars Magica

The guild of Hermetic magicians known as House Verditius in Ars Magica doesn't use formulaic spells like the rest of the gang; instead, they craft items that will express their spells, and these items can even be used by non-wizards, although they do not last long enough to make true wizards obsolete. Sometimes the rules of the game describe House Verditius as alchemists, expressing their spells with potions, vapours and ointments instead. Their heraldic sign is a hand with a ring on each finger.

Artificier in D&D 5E

Surprising a lot of people, given how the class had previously been reduced to a Wizard school in the Eberron Unearthed Arcana, the Artificer was revealed as as class in the Unearthed Arcana- Artificer, released on January 9, 2017.