Unity
Senior Applied Scientist, Ads Personalization
$149K–$245K
Mountain View, CA, USA · Senior · Full-time · Posted Sep 28, 2026
- Experience
- 5+ years in large-scale Ads delivery and optimization systems; 3+ years in content understanding, behavior modeling, user profiling, and cohort analysis.
- Education
- Advanced degree (MS or Ph.D.) in Computer Science, Machine Learning, Statistics, related field, or equivalent practical experience.
About the job
Build and operate user understanding models that improve Unity’s ad ranking, conversion predictions, recommendations, and advertising performance.
What you'll do
- Design, implement, and maintain user understanding models; monitor quality, calibrate predictions, and address data drift or delayed feedback.
- Collaborate with leads to set team direction and oversee engineering designs and project execution.
- Communicate complex technical concepts to non-engineering stakeholders.
What they ask for
- Advanced degree (MS or Ph.D.) in Computer Science, Machine Learning, Statistics, a related field, or equivalent practical experience.
- 5+ years of hands-on experience building and operating large-scale Ads delivery and optimization systems.
- 3+ years of experience in content understanding, behavior modeling, user profiling, and cohort analysis.
- Significant experience with one or more general-purpose programming languages; knowledge of metric design, experimentation methodologies, and large-scale data analysis.
Nice to have
- Experience designing and productionizing optimization algorithms in an ad serving platform and/or other marketplaces.
- Experience with state-of-the-art control systems or reinforcement learning algorithms.
Pay
USD 148,700 - USD 244,600 base salary
Tools
Python, Go, Scala, C++
AI focus
Develop user behavior models and improve conversion rate prediction, ad ranking, recommendations, bidding strategies, and ad performance.
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