Software Engineer, Principal Jobs

Lead the evolution of Microsoft Defender for Office's data platform in Hyderabad. Design and deliver advanced analytical capabilities to detect email threats using Azure Cloud and big data. A senior role requiring 10+ years in distributed systems, security, and coding (C++, C#, Python).

Lead the architecture and deployment of enterprise-scale GenAI solutions as a Principal Engineer. Design modular AI agents, establish engineering standards, and provide technical leadership. This Bellevue-based role requires 7+ years of experience and offers a competitive compensation package wit...

Join Microsoft Security in Redmond as a Principal/Senior Backend Engineer. Design and develop a scalable enterprise platform for critical security services and Copilot experiences. Leverage 8+ years of coding expertise in C#, Java, Python, or similar to mentor teams and drive technical excellence...

Lead the architecture of scalable, low-latency data systems and APIs that power personalized, context-aware intelligence for Microsoft Copilot. This principal role requires 6+ years of experience building secure, cloud-based services (Azure/AWS/GCP) in C++, C#, Java, or Python. You will design pe...

Join Microsoft's Azure Data team as a Principal Software Engineer in Redmond. Design and develop high-performance database systems using C, C++, or C#. Lead critical projects, mentor engineers, and help build the data platform for the AI era. Requires 8+ years of experience and a background in da...

Lead the development of large-scale GenAI training infrastructure and tools at Microsoft in Redmond. As a Principal Software Engineer, you will design scalable, reliable systems for LLM fine-tuning and inference. This role requires deep expertise in distributed systems, cloud infrastructure, and ...

Join Microsoft Teams as a Principal Software Engineer focused on Security. You will secure the engineering supply chain for a flagship product, protecting build, test, and release workflows. This Redmond-based role requires 6+ years of coding experience and strong cross-team collaboration skills....

Lead the development of scalable, high-performance Responsible AI services at Microsoft. Design and build customer-facing AI solutions integrated with Azure AI Content Safety and OpenAI. Requires 6+ years in cloud services and 4+ in ML operations, with expertise in C++, Python, or similar. Join a...

Lead the future of data at Microsoft Azure as a Principal Software Engineer in Noida. Architect and develop large-scale distributed platform services for products like Azure SQL DB and Cosmos DB. Leverage 6+ years of coding expertise in C/C++/C#/Java/Python to build the AI-era data platform. Prov...

Lead the AI evaluation frontier as a Principal Software Engineer on the M365 Copilot platform in Suzhou. Design and build the scalable, reliable control plane that orchestrates offline evaluation, enabling safe prototyping and rigorous quality measurement. Requires 6+ years of coding experience (...