Microsoft AI is seeking a Member of Technical Staff to contribute to the creation of the world's most advanced multimodal dataset. This role involves designing and developing data pipelines for massive amounts of multi-modal data (text, audio, images, video), building and maintaining infrastructure to store and process petabytes of data, and collaborating with pre-training and post-training teams to improve data quality. Responsibilities include partnering with product teams and researchers to identify model gaps, ensuring data quality through rigorous experimentation, and contributing to the development of AI models for the consumer Copilot experience. The ideal candidate is passionate about data's role in large-scale AI, thrives in a fast-paced environment, and possesses a high degree of craftsmanship.