Applied Scientist, Vector AI

Job description

The opportunity Unity's Vector AI team sits at the intersection of large-scale machine learning and real-world impact: our models govern ad ranking and bidding decisions across billions of daily impressions. Get the models right so players can discover games they love. We're looking for an Applied Scientist with experience on user understanding, sequence modeling, and/or conversion prediction. What you'll be doing: - Design and ship user behavior models that directly influence ad ranking, bidding, and conversion outcomes across billions of impressions. - Own model quality from deployment onward: calibration, drift detection, and feedback loop management. - Shape how the team builds, contributing to long-term technical strategy and overseeing engineering execution. - Bridge the gap between ML complexity and business reality, communicating clearly with non-technical partners. What we're looking for: - Master or Ph.D. in Computer Science, Machine Learning, Statistics, related fields, or equivalent practical experience. - 2+ years of hands-on experience designing, building, and operating ML systems at scale in ads, search, recommendations, or related domains. - Deep familiarity with at...