Principal Software Engineer

Help build the end-to-end Generative AI stack for Responsible AI at Microsoft. Lead the development of global, enterprise-scale systems for LLM hosting, inference orchestration, and agentic workflows to ensure AI systems are safe, reliable, and grounded. We are looking for experts in distributed systems and high-performance backend engineering to solve complex challenges in AI alignment, task adherence, and autonomous tool-use at scale. The CoreAI organization builds the fundamental AI backbone for Microsoft’s flagship products, including GitHub, Office, Teams, and Windows. Within this group, the Responsible AI team is at the forefront of Azure AI innovation, building the global infrastructure required to run the world's largest AI workloads safely. Our mission is to identify, measure, and mitigate risks across all content modalities. As a Principal Software Engineer, you will join a talented multidisciplinary team of engineers, scientists, and product managers to build industry-leading AI services. You will architect the infrastructure required for agent workflow management and real-time safety guardrails. This role is central to hosting and orchestrating models at scale, integrating deeply with platforms such as Microsoft Foundry, Azure AI Content Safety, and Azure OpenAI Service