Senior Software Development Engineer, Rendering Foundations - ProductUIService Product UI Service (PUIS) is a tier-1 service that provides product detail information to Amazon retail websites and downstream services. We currently serve Search, Dossier widgets on Search and Amazon Page Builder (APB) based Browse pages. As a Senior SDE on PUIS, you will own and evolve a Tier-1 rendering system that processes hundreds of millions of requests daily and directly shapes the shopping experience for hundreds of millions of customers worldwide. PUIS is Amazon's centralized, standalone ASIN faceout rendering engine. It decouples product presentation logic from every upstream surface (Search, Homepage, Detail Page, and beyond), enabling consistent, high-quality product displays at scale through a recipe-driven configuration system. You will work at the intersection of distributed systems, rendering infrastructure, and customer-facing UI — solving hard problems in latency, reliability, and extensi...