Join Amazon's Unified Payments Experience (UPX) team as a Senior Software Engineer to work on cutting-edge cloud technologies and impactful payment solutions. You'll be part of a team modernizing architecture using AWS services, React Native, and serverless technologies. The role involves building highly scalable systems, securing customer PII, and developing Tier-1 services with 5 9s availability. You'll work on complex engineering problems, collaborate with multiple teams, and drive customer engagement through innovative solutions. The position offers competitive compensation ranging from $151,300 to $261,500 based on location, plus equity and comprehensive benefits. This is an opportunity to shape the future of payment experiences at one of the world's leading technology companies, working with the latest technologies while solving challenging engineering problems at scale. The role requires strong technical leadership, system design skills, and the ability to deliver high-quality customer-facing features while working cross-functionally with product managers and business stakeholders.