Microsoft
Principal Applied Scientist
$143K–$304K
Redmond, WA +1 · On-site · Principal · Full-time · Posted Oct 27, 2026
- Location
- Redmond, WA
Mountain View, CA - Experience
- Requirements include the degree-dependent experience pathways above, plus the separately stated publication, research, presentation, and product-system experience.
- Education
- Bachelor's, master's, or doctorate in a listed quantitative field or related field, or equivalent experience.
About the job
Builds and deploys AI and machine-learning systems for forecasting and managing Microsoft 365 and Copilot infrastructure capacity, health, and incidents.
What you'll do
- Build runtime AI automation for infrastructure capacity and health, including anomaly detection, root-cause analysis, and mitigation.
- Develop forecasting, machine-learning, and mathematical optimization systems to improve capacity, reliability, and service performance.
- Set technical direction and take research and prototypes into production in partnership with engineering, product, and research teams.
What they ask for
- Degree and related experience: bachelor's plus 6+ years, master's plus 4+ years, doctorate plus 2+ years, or equivalent experience; additional principal-level pathways are master's plus 9+ years, doctorate plus 6+ years, or equivalent experience.
- 5+ years creating publications; 2+ years presenting as an invited speaker; and 5+ years conducting research as part of a research program.
- 3+ years developing and deploying live production systems on a product team, and 3+ years working across product-cycle stages from ideation to shipping.
- Experience building ML or AI solutions in Python, C#, C++, or R with modern ML frameworks or LLM tools; working knowledge of SQL or a similar query language.
Nice to have
- Experience building LLM-powered applications and agentic systems, including tool use, retrieval-augmented generation, multi-agent orchestration, and production evaluation.
- Experience with anomaly detection, root-cause analysis, AIOps, incident mitigation, time-series forecasting, production ML systems, large-scale data platforms, or mathematical optimization.
Pay
USD $142,800 - $274,800 per year (base salary); USD $188,000 - $304,200 per year (base salary)
Tools
Python, C#, C++, R, PyTorch, scikit-learn, SQL, Microsoft Agent Framework
AI focus
Develop production AI systems for infrastructure capacity and health, including agentic automation, anomaly detection, root-cause analysis, automated mitigation, forecasting, and optimization.
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