Hi! I co-led the billing stack re-write at Uber circa 2017 and it was an absolute nightmare. Some of the unexpected hard things that are not mentioned in this a

Hi! I co-led the billing stack re-write at Uber circa 2017 and it was an absolute nightmare. Some of the unexpected hard things that are not mentioned in this article: - Manage promotion was very complex - Modeling money (we used to model it as cents ie 1/100 of the common denomination ... turns out it broke a lot of countries like Japan where the Japanese Yen doesn't have cents) - Timezone is a hellhole One interesting open source project was https://killbill.io/ https://killbill.io/ PS: Since I built a billing and invoicing startup .. check it out: zenbill.com