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# Software Development Engineer II, Fulfillment Optimization

- **Company:** Amazon.com, Inc.
- **Location:** Spain
- **Contract:** Internship / Graduate position
- **Skills:** Clean Code Principles, Amazon Web Services, Code Review, Computer Programming, Software Design Patterns, Distributed Systems, Python (Programming Language), Networking Basics, Software Construction, Software Engineering, Systems Integration, Event Driven Architecture, Information Technology, Production Code, Build Process, Software Coding, Software Version Control
- **Published:** July 15, 2026
- **Apply:** https://es.trabajo.org/oferta-5354-c7bd084ae356ae32537e05630b989905

## About the Role

outputs with systems across Amazon's fulfillment network Basic Qualifications Experience (non-internship) in professional software development Experience designing or architecting (design patterns, reliability and scaling) of new and existing systems Experience programming with at least one software programming language Preferred Qualifications Bachelor's degree in computer science or equivalent Experience with full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations Amazon is an equal opportunities employer. We believe passionately that employing a diverse workforce is central to our success. We make recruiting decisions based on your experience and skills. We value your passion to discover, invent, simplify and build. Protecting your privacy and the security of your data is a longstanding top priority for Amazon. Please consult our Privacy Notice ( to know more about how we collect, use and

## Description

not building something theoretical - you are building software that downstream systems depend on every single day to move packages for customers worldwide. You will tackle real production problems: ensuring five-nines availability, designing systems that balance rapid model iteration with production stability, integrating with critical transportation systems, and building the monitoring and diagnostics that keep everything running. If you enjoy owning systems end-to-end, writing clean code that operates at scale, and solving hard problems where reliability truly matters, this is the role for you. Design and own production software that processes complex inputs and delivers reliable outputs to downstream transportation systems Build event-driven architectures and automated quality validation frameworks on AWS Drive operational excellence through monitoring, diagnostics, and chaos testing to achieve five-nines availability Collaborate with science and engineering teams to integrate model


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