Microsoft's Commercial Systems & Technology (CST) team is seeking a Principal Software Engineer to lead AI-led digital transformation initiatives. This role involves architecting and developing platforms and services that enable multi-billion-dollar revenue-generating businesses within Microsoft Customer and Partner Solutions (MCAPS). The position focuses on building cutting-edge technology solutions, integrating generative AI capabilities, and creating efficient workflows through APIs and pipelines. The ideal candidate will work with cross-functional teams to leverage Microsoft Platforms and Frameworks, collaborate on user experiences, and ensure security compliance. This role combines backend/cloud services, data processing, and state-of-the-art Generative AI/LLMs to deliver scalable solutions. The position offers remote work flexibility, comprehensive benefits, and the opportunity to impact one of the world's largest technology companies. The role requires extensive experience in software engineering, cloud services, and distributed systems, with a focus on building resilient, operationally efficient platforms and experiences.