Amazon is seeking a Senior Software Development Engineer to join their Stores team in Madrid, Spain. This role offers a unique opportunity to work at unprecedented scale, serving hundreds of millions of customers worldwide. As a Senior SDE, you'll be part of an elite group working on various exciting projects including Kindle Books Tech, Amazon Business, and International Technology initiatives. You'll lead the architecture and technical design of large-scale systems, mentor other engineers, and drive critical technical decisions. The position offers exposure to cutting-edge technologies and platforms, working on everything from e-commerce platforms to reader experiences across multiple surfaces. You'll have significant autonomy and be looked up to as a technical leader, helping shape the future of Amazon's global technology infrastructure. The role combines hands-on coding with strategic technical leadership, making it perfect for experienced engineers who want to make a massive impact at a global scale. You'll be working in Madrid's growing tech hub, contributing to projects that transform how millions of customers interact with Amazon's services daily.