No, DXM (Deus Ex Machina) is not a goth band, because they play Experimental Electronic, while goth music consists of Gothic Rock and its derived genres, like Deathrock, Darkwave, Ethereal Wave, and Coldwave.

However, their music does show some goth influences and could be considered adjacent to the goth scene.

If you want to dive into the goth music scene, some of the bands that might appeal to you if you enjoy DXM (Deus Ex Machina) are Ashrae Fax, Canaan, and Maenad & the Ravers.