Preheat your oven to 180°C (350°F) and prepare a 9-inch round cake pan by greasing and lining it with parchment paper.
Whisk together the eggs and granulated sugar until pale and fluffy.
Gently fold in the almond flour and all-purpose flour.
Fold in the melted butter until fully combined.
Pour the batter into the prepared pan and bake for 20-25 minutes.
Allow the cake to cool before removing it from the pan.
Combine brewed coffee and sugar in a saucepan for the syrup, heating until dissolved.
For the ganache, heat the cream and pour it over the chopped chocolate; stir until smooth.
For the buttercream, beat the softened butter, powdered sugar, coffee, and vanilla until fluffy.
Assemble the cake by layering the soaked sponge, ganache, and buttercream.