Principal Software Engineer - Office Suite Shared Experiences (OSSE)

Within the Office Suite Shared Experiences (OSSE) organization, we build largescale data platforms, experimentation systems, and shared service infrastructure that power critical Office and Copilot experiences used by hundreds of millions of users every day. We are seeking a Principal Software Engineer to provide technical leadership and architectural direction for our experimentation and insights platform. This role is responsible for designing, evolving, and scaling experimentation infrastructure and data systems that enable rapid, trustworthy decision making across Office and Copilot and requires specialized skills and experience for both architecting and designing experimentation systems, working with large data systems, and driving cross-organization initiatives. This is a senior technical leadership role with broad organizational impact. You will partner closely with engineering, product management, data science, applied science, and leadership teams to define long term architecture, influence cross organizational investments, and raise the technical bar for experimentation, reliability, and data driven engineering across Microsoft.