Principal Applied Scientist - Ads Ranking & Retrieval

About the role

The AI Economy Team at Microsoft is building the infrastructure that powers how organizations ground, deploy, and scale AI applications. Developers can access it through self-serve, programmatic access, and access at that scale attracts abuse.

What you'll do

• Lead the AI Economy Trust & Safety project end to end, including problem definition, execution planning, technical reviews, production rollout and measurement
• Own the identity-resolution and clustering approach used to connect accounts, tenants and payment instruments to common actors
• Own applicant-risk and ongoing account-risk models, including the evidence used for initial decisions and subsequent reassessment
• Develop detection methods that distinguish legitimate high-volume use from coordinated extraction and other abusive behavior
• Select and evaluate machine learning approaches, including supervised learning, anomaly detection, graph methods, sequence models and large language models

What you need

• 6–11 yrs of experience
• Statistics
• Machine learning
• LLMs
• B.Sc or B.Tech or B.E. or BCA or M.Sc or M.Tech or MCA

Good to have

• KYC
• IPR