Microsoft's Core OS team is seeking a Software Engineer to work on the lowest layers of the Windows Operating system and platform firmware. This role focuses on silicon enablement technologies including OS power management, device enumeration, and firmware interfaces (UEFI/ACPI). The position offers unique opportunities at the intersection of hardware and system software, contributing to products that power Azure, Microsoft's Linux OS, Windows Client, Xbox, and Windows Server ecosystem. The team collaborates across Microsoft and the industry, supporting cloud businesses and billions of customers worldwide. Working in Core OS means being at the heart of Microsoft's system software excellence, delivering high-quality, efficient operating systems and platform components that enhance reliability and competitiveness. The role requires strong technical skills in systems programming, with opportunities for innovation and cross-functional collaboration. Microsoft offers comprehensive benefits, a collaborative culture, and the chance to work on technology that impacts users globally.