Preheat your oven to 350°F (175°C). Grease and flour a 9-inch round cake pan.
In a mixing bowl, cream together the softened butter and granulated sugar until light and fluffy (about 3-4 minutes).
Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract and orange zest.
In a separate bowl, whisk together the flour, baking powder, baking soda, and salt.
Gradually add the dry ingredients to the butter mixture, alternating with the orange juice. Start and end with the flour mixture. Mix until just combined.
Gently fold in the cranberries using a rubber spatula, being careful not to overmix.
Pour the batter into the prepared cake pan and smooth the top.
Bake in the preheated oven for about 35-40 minutes, or until a toothpick inserted in the center comes out clean.
Allow the cake to cool in the pan for 10 minutes before transferring it to a wire rack to cool completely.