Principal Software Engineer

We are the team responsible for delivering efficient and innovative Graphics Processing Unit (GPU) techniques for Microsoft's online advertising platforms. The team's mission is to leverage advances in large language models (LLMs) and deep learning to improve efficiency and monetization of Microsoft's advertising business. To this end, we are responsible for adapting algorithms for retrieval, selection, ranking and classification for execution on GPUs under tight latency and throughput constraints. We are looking for a Principal Software Engineer who is excited to work on the end-to-end for stack with an emphasis on using GPUs for LLM use cases and beyond. Microsoft’s mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond. Starting January 26, 2026, Microsoft AI (MAI) employees who live within a 50- mile commute of a designated Microsoft office in the U.S. or 25-mile commute of a non-U.S., country-specific location are expected to work from the office at least four days per week. This expectation is subject to local law and may vary by jurisdiction.