Principal Researcher, Office Product Group

We are building a high-impact AI engineering and applied science team within the Office Product Group to advance the next generation of intelligent, AI-powered experiences embedded directly into Microsoft 365 applications. The team operates at the intersection of research and product development, evolving new model and system capabilities and delivering them at scale to support hundreds of millions of users worldwide. As a Principal Researcher, you will contribute to the design, development, evaluation, and deployment of AI systems that can reason, take action, and work across tools, documents, and services. You will apply these capabilities within real product environments, balancing innovation with practical considerations such as reliability, performance, and user experience.

Support the development of frameworks that enable coordination and communication across multiple AI components, helping to facilitate task delegation, orchestration, and result validation scenarios.

Apply and improve techniques for efficient code generation and transformation in low-resource environments, including adapting models to domain-specific languages, formulas, and structured or semi-structured data formats.

Implement and iterate on fine-tuning and post-training approaches for large-scale machine learning models to enhance reliability, controllability, and readiness for production use.

Contribute to the design and execution of evaluation strategies and benchmarks that reflect real-world Microsoft 365 user workflows, including participation in system-level and human-in-the-loop assessments.

Collaborate with engineering and product management partners to help translate research ideas into scalable, production-ready features, with attention to user experience, performance, and responsible AI practices.