Sr Software Dev Engineer, Appstore Commerce Checkout and payments

Job description

The Software Development Engineer will design, develop, and maintain business-critical order processing, checkout, and payment workflows for Amazon Appstore Commerce. This role requires building scalable, reliable systems that handle millions of transactions across global marketplaces while ensuring seamless customer experiences. Key responsibilities include developing robust APIs and services for payment processing, implementing secure checkout flows, optimizing transaction success rates, and reducing payment friction. The engineer will work with cross-functional teams to integrate with Amazon payment systems, and ensure high availability of mission-critical commerce infrastructure. The ideal candidate brings strong software development skills, experience with distributed systems, and a customer-obsessed mindset. They will contribute to architectural decisions, participate in code reviews, and drive operational excellence through monitoring, alarming, and continuous improvement of system performance. This position offers the opportunity to impact developer monetization and customer purchase experiences while working with latest technologies in a fast-paced, innovative environment. The role requires balancing feature development with maintaining high availability and security standards for mission-critical commerce infrastructure. Success in this role means delivering features that increase conversion rates, reduce payment failures, and enable developers to grow their businesses on the Amazon Appstore platform. Key job responsibilities You will be responsible for the architecture, design,…