Principal Software Engineer

Help reinvent how advertising outcomes are measured in the AI era. You'll join Microsoft Advertising in building always-on measurement foundations that power performance, trust, and optimization at global scale. You'll work on systems that transform raw conversion events into actionable attribution signals—so advertisers can understand what worked, what didn't, and how to improve as customer journeys evolve. As a Principal Software Engineer on the Conversion & Attribution engineering team, you will provide technical leadership for our near real-time conversion pipeline and attribution platform—driving architecture, reliability, and privacy-aware measurement across multiple services and scenarios. You'll partner with engineering, product, data science, and privacy/compliance stakeholders to evolve a unified, configurable attribution architecture that enables faster iteration, higher correctness, and consistent measurement across surfaces. You will raise the bar on operational excellence for business-critical services and be a key technical voice in shaping how we measure outcomes responsibly in the era of AI. 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.