Preheat oven to 350 degrees. Whisk together flour, cinnamon, baking powder, baking soda and salt. Set aside. Beat together eggs, sugars, oil, and pumpkin puree in the bowl of a stand mixer. Slowly add in dry ingredients a little at a time, until just combined. Pour into greased 9×13 pan. Bake for 25-30 minutes or until set. Cool completely.