Looking for an exciting challenge to accelerate your career? Are you customer obsessed? Imagine being part of a team that predicts inventory flows for Amazon's worldwide supply chain. Amazon's worldwide inventory planning involves many algorithms to buy inventory in the right quantities, at the right frequencies, from the right vendors, and assigning to the best warehouse to fulfill customer demand forecast. Our massive simulation system lives at the heart of these algorithms, keeping up with the rapid pace of optimization improvements and simulating how they interact with each other. We simulate what these systems will do for months into the future, predicting inventory flows across the network for both labor planning and AB test experimentation, end-to-end from vendors to customers. The Amazon Supply Chain Optimization Technology (SCOT) organization is looking for a highly motivated software development engineers (SDE). SCOT is a unique opportunity to both create and see the direct impact of your work on billions of dollars' worth of inventory, in one of the world's most advanced supply chains, and at massive scale.