Microsoft SCHIE (Silicon, Cloud Hardware, and Infrastructure Engineering) is seeking a Principal Software Engineer for their DPU Runtime Operating System team. This role is part of the team powering Microsoft's extensive cloud infrastructure and 200+ online businesses including Azure, Office 365, Xbox Live, and Teams. The position focuses on developing cutting-edge DPU software, specifically working on confidential computing systems. The ideal candidate will bring extensive experience in operating systems and embedded development to contribute to DPU driver code and related host software. This is a unique opportunity to work on next-generation DPU-based products with wide-reaching impact across Azure's infrastructure. The role offers a hybrid work environment with up to 50% work from home flexibility and requires 0-25% travel. The position involves working with state-of-the-art software and hardware to create highly programmable and high-performance ASIC solutions. Microsoft offers comprehensive benefits including healthcare, educational resources, parental leave, and investment opportunities. The company is committed to equal opportunity employment and welcomes candidates from all backgrounds.