Overview
Role: Principal 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 own the detection problems behind AI Economy access decisions: establishing who is behind a recent account when the evidence is thin, recognizing when accounts that look unrelated belong to one actor, drawing the line between heavy legitimate use and systematic extraction, and deciding what should return an approved account to scrutiny after it was cleared. You will work these problems hands-on from end to end, framing the problem, building the models that answer it, and taking them to production.




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
- 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 clust

📌 Principal Applied Scientist (Bengaluru)
🏢 Microsoft
📍 Bengaluru