New 
Senior Applied Scientist
 Microsoft | |
 United States, Washington, Redmond | |
 Jul 17, 2025 | |
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OverviewThe Senior Applied Scientist, Office AI, is a leadership role at the intersection of applied machine learning, large language models, and multi-modal intelligence. This position drives transformative AI solutions across Microsoft 365, empowering users to work, create, and communicate naturally through digital pen, voice, visual, and text-based interfaces. By integrating deep technical expertise with platform-scale innovation, the role advances both the foundational AI platform and natural user interaction capabilities, shaping the future of productivity for hundreds of millions of users. You will join a collaborative organization that focuses on intelligent agents, on-device AI, and next-generation multi-modal intelligence, which powers Copilot experiences in M365 Copilot, Word, Excel, PowerPoint, and beyond. Close partnerships with engineering, product, Microsoft Research, and cross-functional stakeholders are central to delivering seamless multi-modal and AI-driven capabilities at scale. The team values inclusivity, growth mindset, and a culture that fosters innovation and impact. As a Senior Applied Scientist in Office AI, you will help define the next era of natural, multimodal productivity for users worldwide. You will work in an environment that values innovation, inclusivity, and real-world impact-collaborating with world-class teams to deliver life-changing AI experiences at scale. If you are passionate about advancing the frontiers of AI and shaping how people interact with technology, we invite you to join our mission. Microsoft's mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond.
ResponsibilitiesResponsible for end-to-end development, deployment, and continuous improvement of advanced multimodal ML/LLM systems-including dataset curation, labeling strategy, model architecture, scalable training, and rigorous evaluation (offline and online). Research, design, and implement on-device and cloud-based AI models, optimizing for low latency, privacy, and resilience in both connected and constrained environments. Drive complex orchestration of Copilot workflows and agent pipelines, blending prompt engineering, tool invocation, and context grounding for productivity scenarios. Collaborate with engineering and product teams to define success metrics, design and execute experiments (e.g., A/B testing), monitor user signals, and iterate on deployed features. Advance the state-of-the-art through applied research, prototyping new concepts in ink, voice, vision, and LLM-based agents, and translating breakthroughs into scalable, user-centric product features. Apply Microsoft's Security and Responsible AI principles throughout the ML lifecycle, ensuring robust data governance, fairness, transparency, and ethical AI practices. Mentor and influence peers, set technical direction, foster a collaborative and inclusive culture, and contribute to team talent development. Stay current with research and industry trends, identifying opportunities to integrate emerging technologies and methods into the Office AI ecosystem. | |