Principal Software Engineer, AI Ads

Architecting the Future of AI Ads

Microsoft is looking for a high-level technical leader to redefine the infrastructure behind global commerce. In this Principal role, you will bridge the gap between AI research and production-scale systems, building low-latency engines for shopping and travel. You aren’t just a developer; you’re a strategist designing the backbone of a product graph that handles billions of data points through distributed systems and generative models.

Leading the Vibe Coding Revolution

What sets this role apart is the explicit mandate to advance AI-native development. You will be expected to champion "vibe coding," agentic workflows, and the use of coding agents to transform how the team delivers software. While you'll work with core languages like C++, Python, and C#, your focus will be on leveraging LLMs and SLMs to automate and optimize the engineering lifecycle itself.

Your Impact and Influence

As a technical heavyweight, you will set the architectural direction for cross-team initiatives and mentor engineers in modern AI-assisted practices. This is an opportunity to move beyond traditional coding and into high-level system design, where your ability to orchestrate complex AI agents and data pipelines directly impacts the global advertising market. You'll be working in the Mountain View office, driving the next era of commerce through rapid experimentation and an entrepreneurial mindset.