In Global Siri, we are responsible for the end-to-end user experience in all Siri markets. This means we build new features and scale them across Siri languages and devices. As a Senior ML engineer in Global Siri, you will help us build and apply ML solutions to scale new features, utterance understanding and natural language generation faster across different languages. You should be able to work with large scale systems, write high quality code and are comfortable in contributing to existing systems and developing new ones. Communication skills will be required to coordinate work across multiple teams. Specific responsibilities include: - Work on cutting-edge technology at the intersection of agents & multilinguality - Understand how agentic LLMs learn capabilities across languages- Develop mechanisms to automate data creation and data filtering across different languages - Find innovative solutions to scale fine-tuning approaches to multiple languages - Devise automated approaches to evaluate the performance of agents across multiple languages