Overview: Microsoft Advertising is building a large-scale Demand Intelligence platform that translates complex data into high-quality, actionable insights for stakeholders. The system combines advanced machine learning models with generative AI to model recommendations, automate analysis, generate contextual summaries, and streamline workflows across organizational tools. As a Principal Applied Scientist, you will define the scientific vision and lead the development of both ML and large language model components. This includes designing robust models, driving experimentation, ensuring statistical rigor, and guiding the platform’s evolution toward greater automation, accuracy, and scalability. You will partner closely with engineering and product teams to translate research into reliable production systems, influence long-term strategy, and deliver intelligence that enables smarter, faster, and more informed decisions. Location: Redmond, Washington, United States. Hybrid work arrangement. Starting January 26, 2026, Microsoft AI (MAI) employees who live within a 50-mile commute of a designated Microsoft office in the U.S. or 25 miles of a non-U.S., country-specific location are expected to work from the office at least four days per week, subject to local law.

Overview: Microsoft Advertising is building a large-scale Demand Intelligence platform that translates complex data into high-quality, actionable insights for stakeholders. The system combines advanced machine learning models with generative AI to model recommendations, automate analysis, generate contextual summaries, and streamline workflows across organizational tools. As a Principal Applied Scientist, you will define the scientific vision and lead the development of both ML and large language model components. This includes designing robust models, driving experimentation, ensuring statistical rigor, and guiding the platform’s evolution toward greater automation, accuracy, and scalability. You will partner closely with engineering and product teams to translate research into reliable production systems, influence long-term strategy, and deliver intelligence that enables smarter, faster, and more informed decisions. Location: Redmond, Washington, United States. Hybrid work arrangement. Starting January 26, 2026, Microsoft AI (MAI) employees who live within a 50-mile commute of a designated Microsoft office in the U.S. or 25 miles of a non-U.S., country-specific location are expected to work from the office at least four days per week, subject to local law.