Microsoft is a technology company whose Azure Data engineering team builds data platforms, databases, analytics, and AI-enabled services. The Principal Software Development Engineer will drive innovations for the Azure PostgreSQL team, focusing on relational database engine areas such as query processing, transaction logging and recovery, versioning, I/O subsystems, scale-out, and distributed systems. The role also contributes to open-source PostgreSQL and Linux, develops extensions, oversees system architecture, establishes coding practices, and supports live services.