Senior Software Engineer(Ads)

Online Advertising is one of the fastest‑growing businesses on the Internet. Microsoft Ads powers large‑scale deep learning workloads across Search, Recommendations, Click Prediction, and Relevance. Deep learning sits at the core of how Ads drives business performance and delivers high‑quality user experiences. We are building a unified, high‑performance inference platform to serve Ads deep learning models at extreme scale. This platform serves billions of requests daily, with strict requirements on latency, throughput, reliability, and cost. We are seeking a Principal Software Engineer with solid expertise in high‑performance C++ systems and large‑scale distributed serving, with preferred experience in GPU inference and acceleration technologies. You will be a senior technical leader driving the architecture, performance, and reliability of the next‑generation serving stack for Ads. 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.