Preheat the oven to 350°F, prepare two 8" cake pans with non-stick cooking spray and parchment rounds.
In the bowl of a stand mixer fitted with the paddle attachment, combine the sugar, flour, cocoa, baking soda, baking powder and salt. Mix on low until dry ingredients are thoroughly combined.
On low speed add eggs, buttermilk, coffee, oil and vanilla.
Once everything is combined beat on medium speed for 1 minute.
Divide batter between two pans and bake for 25-30 minutes, or until wooden toothpick inserted in center comes out clean.
Transfer pans to wire rack and let cool completely.