Overview
Role: Senior Applied Scientist
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. The AI Economy Trust & Safety team builds the detection behind those access decisions: verifying that customers are who they claim to be, recognizing when many accounts are one actor, and separating ordinary heavy usage from extraction, resale and automated exploitation.
You will build detection models that protect a large-scale, developer-facing Microsoft platform from fraud and abuse by resolving many accounts to a single actor, separating legitimate customers from fabricated ones at signup, and monitoring account behavior after activation. This work involves sparse and delayed labels, evolving abuse patterns, and rigorous evaluation before deployment.
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.

Responsibilities
• Develop and productionize identity-clustering models using similarity, graph, linkage and embedding methods.
• Develop applicant-risk models using structured and unstructured identity, business and behavioral signals.
• Build behavioral detection for active accounts using sequence modeling, anomaly detection, query-dis

📌 Senior Applied Scientist (Bengaluru)
🏢 Microsoft
📍 Bengaluru