Accounting hasn't really changed in the past couple of hundred years. Despite this, there is a lot of confusion around the right way of building software for financial systems. In this post, I’ll share lessons from my years working on financial systems at big tech companies. Our focus will be building an accounting system, but the principles apply to more general financial systems as well.This post will go over the followingBasic financial definitions relevant to the postHigh level goals of an a...