Amazon is seeking a Senior Software Development Engineer for their Core Services team under Worldwide Customer Purchase Journey, specifically in the Shipping and Region Authority (SARA) organization. This role focuses on developing foundational products that shape the customer shopping experience, from gateway pages through search and checkout. SARA's systems orchestrate shipping, regions, locations, and restrictions, requiring complex integration with multiple services. The position demands expertise in distributed systems architecture, with responsibilities including technical leadership, cross-functional collaboration, and delivery of scalable solutions. The ideal candidate will drive high-level technical design while considering future challenges, particularly in fraud prevention. This role offers significant impact potential in shaping Amazon's global customer experience while working with cutting-edge distributed computing technologies. The position requires strong technical expertise combined with leadership abilities to guide teams and projects effectively. Working in Amazon's innovative environment, you'll have the opportunity to influence fundamental changes in e-commerce technology while solving complex technical challenges at unprecedented scale.