The Principal Applied Scientist will work with enterprise customers and Copilot teams to enhance customer-grounded quality systems. This role focuses on translating customer workflows and pain points into evaluation and learning signals. The candidate will set the scientific direction for quality assessment, ensuring that evaluation portfolios meet real customer needs. The position requires a blend of scientific expertise and product judgment to address complex challenges in a fast-paced environment.

• Bachelor's Degree in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 6+ years related experience.
• Master's Degree in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 4+ years related experience.
• Doctorate in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 3+ years related experience.
• Equivalent experience in statistics, predictive analytics, or research.

• Set the scientific strategy for customer-grounded quality across priority Copilot intents.
• Translate user research and enterprise customer feedback into evaluation and post-training priorities.
• Develop methods to assess evaluation-set representativeness and coverage.
• Design behavior and task evaluations that translate qualitative customer expectations into measurable quality.
• Establish methods to attribute quality losses across various components of the system.
• Mentor scientists and engineers while influencing evaluation and post-training strategy.

• Employees at Microsoft are often offered comprehensive, “world-class” benefits—including health and mental-wellness programs, competitive pay with bonuses and stock awards, and retirement/savings options. Time-off and flexibility are common, with generous vacation and holidays, parental and caregiver leave, and flexible work schedules, alongside learning support, employee resource groups, product discounts, and matching-gifts/volunteering programs. Specific benefits can vary by region.