Sr. Data Scientist, AI/ML Systems

Pinterest is looking for a Senior Data Scientist to serve as the measurement backbone for Pinterest's foundational model initiatives within the Advanced Technology Group (ATG). In this role, you will design the evaluation frameworks, experimentation strategies, and system-level metrics that quantify how improvements to our largest and most complex models translate into real user and business outcomes.

Requirements

• 5+ years of experience analyzing data in a fast-paced, data-driven environment
• Strong interest and hands-on experience in one or more of: ML system evaluation, recommender system measurement, A/B experimentation at scale, causal inference
• Deep familiarity with large-scale recommendation or ranking systems and their evaluation
• Experience designing and executing A/B experiments for complex ML systems
• Strong quantitative programming (Python) and data manipulation skills (SQL/Spark)
• Ability to work independently, drive ambiguous projects end-to-end, and operate with high ownership in a fast-moving research-to-production environment
• Excellent written and verbal communication skills, with the ability to translate complex system-level findings into clear narratives for technical and non-technical partners
• A team player eager to partner across teams to turn measurement insights into better models and faster launches

Benefits

• 401k Matching
• Retirement Plan
• Equity