Amazon Advertising's Sponsored Brand organization is seeking a Senior Software Development Engineer to join their team focused on creating the best-in-class destination for shoppers to discover and engage with brands. The role involves working on core Ad Serving services - a high-performance distributed system handling billions of requests internationally. The position requires expertise in full-stack development and distributed systems, with opportunities to work with cutting-edge LLM technologies. The ideal candidate will lead technical initiatives, architect scalable solutions, and mentor team members while working at the intersection of e-commerce, advertising, and machine learning. This role offers competitive compensation ranging from $151,300 to $261,500 based on location, plus equity and comprehensive benefits. The team's work directly impacts Amazon's advertising platform, serving both shoppers and advertisers globally through innovative technical solutions.