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The IDEAS Security Data Science team focuses on building AI‑ and agent‑centric data science solutions that power Microsoft Security products and experiences. We partner closely with Security engineering and product teams to translate complex, high‑signal data into intelligent systems, automated decisioning, and measurable business and product impact. Our work spans AI agents, applied machine learning, security telemetry, experimentation, and executive‑ready insights that drive growth, protection, and operational excellence across the Security portfolio. As a Senior Data Scientist in Security Data Science, you will lead the development of AI‑first and agent‑driven analytical solutions by default. You will design and productionize models, agents, and data products that directly influence security product experiences, customer outcomes, and business decisions. This role requires strong applied ML skills, comfort working with LLM‑based systems, deep analytical rigor, and the ability to mentor others while operating in close partnership with engineering and product. This position is based at the Redmond campus with 3 days per week work in the office and 2 days per week work from home. Relocation assistance is available.
Job Responsibility:
Agent & AI‑Centric Solution Development
Statistical Analysis & Experimentation
Model Development & Deployment
Business & Product Impact
Data Engineering & Infrastructure
Leadership & Mentorship
Requirements:
Bachelor's Degree in Data Science, Mathematics, Statistics, Econometrics, Economics, Operations Research, Computer Science, or related field AND 5+ years data-science experience
OR Master's Degree in Data Science, Mathematics, Statistics, Econometrics, Economics, Operations Research, Computer Science, or related field AND 3+ years data-science experience
OR Doctorate in Data Science, Mathematics, Statistics, Econometrics, Economics, Operations Research, Computer Science, or related field AND 1+ year(s) data-science experience
OR equivalent experience
Ability to meet Microsoft, customer and/or government security screening requirements
Microsoft Cloud Background Check
Nice to have:
Programming: Python, SQL (R optional)
Machine Learning & AI: supervised/unsupervised learning, model evaluation, applied ML systems