At Apple, great ideas have a way of becoming great products, services, and customer experiences. This role focuses on making Siri and Apple Intelligence features smarter for users, contributing to the next revolution in AI and Machine Learning. The engineer will work closely with product managers, backend engineers, data scientists, and stakeholders to improve the quality and user experience of Apple products. Responsibilities include designing and developing on-device systems and frameworks to enhance Apple Intelligence quality, leveraging machine learning technologies like LLMs and MLLMs to automate processes, and advancing the evaluation pipeline. The role also involves continuously enhancing on-device measurement frameworks and driving the next generation of products across all Apple platforms.