Preheat oven to 350°F (177°C). Line three 8-inch round cake pans with parchment and lightly grease them.
In a stand mixer fitted with the paddle attachment, beat the softened butter, neutral oil, brown sugar, and granulated sugar on medium-high for 3–4 minutes until pale and fluffy.
Add eggs one at a time, mixing well after each addition. Mix in the vanilla bean paste and beat for an additional minute.
In a separate bowl, whisk together the flour, baking soda, salt, cinnamon, and cardamom.
With the mixer on low, alternate adding the dry ingredients and the buttermilk in this order:
1/3 of the dry ingredients, 1/2 of the buttermilk, 1/3 of the dry ingredients, 1/2 of the buttermilk, Final 1/3 of the dry ingredients
Mix until just combined.
Add the fig jam and mix on low until fully incorporated.
Divide batter evenly between the three pans. Bake for ~30-35 minutes, or until a toothpick inserted into the center comes out clean with a few moist crumbs.
Cool in pans for 10 minutes, then remove from the pans to cool completely on wire racks.