Apple's Siri and Information Intelligence organization is seeking a Distinguished Engineer to lead their AI/ML initiatives. This role focuses on developing cutting-edge LLM-based solutions for question answering and personal content search, leveraging Apple's unique ecosystem of hardware and software. The position involves working with advanced technologies including Reinforcement Learning, LLMs, and generative AI, while maintaining Apple's strong privacy and security standards. The successful candidate will shape the vision for AI technology at Apple, working across multiple teams to impact billions of users worldwide. This role offers the opportunity to work at the intersection of theoretical ML research and practical application, with access to Apple's vast resources and innovative environment. The position comes with comprehensive benefits, competitive compensation including equity opportunities, and the chance to work on transformative AI technologies that will define the future of personal computing.