As a System High-Speed I/O Validation Engineer at Apple, you will execute electrical compliance tests on high-speed serial I/O interfaces. You will be responsible for organizing compliance data reports, troubleshooting test hardware and software, and providing failure analysis feedback for hardware and software improvements. Your duties will also include defining and developing methods for stress testing, validating high-speed fixtures, and developing Python scripts for automation and data collection. This role requires meticulous attention to detail, strong analytical skills, and the ability to work collaboratively within a dynamic engineering environment.