# Senior Applied Scientist, Ads Personalization at Unity

- Company: Unity
- What the company does: Develop, deploy, and grow with Unity, the world’s leading 3D game engine. Build for all major platforms from mobile, to PC and console as well as XR, acquire players, monetize your game, and power industrial applications. Backed by Sequoia.
- Company website: https://www.unity3d.com/
- Type: Startups (AI role)
- Level: Senior
- Location: Mountain View, CA, USA
- Work setup: On-site
- Pay: $188K to $245K base salary per year (USD)
- Posted: 2026-09-22
- Apply by: 2026-11-06
- Apply: https://unitytech.wd1.myworkdayjobs.com/en-US/Unity/job/Mountain-View-CA-USA/Senior-Applied-Scientist--Ads-Personalization_JOBREQ-2616284-1
- Page: https://www.1752.vc/careers/jobs/unity-senior-applied-scientist-ads-personalization/

## About the role

We are seeking a highly skilled Senior Applied Scientist to build and maintain advanced systems for understanding user behavior across applications. You will be responsible for improving ad ranking, conversion predictions, and recommendation systems, enabling richer behavioral models, smarter bidding strategies, and more effective ad performance.

## What they're looking for

- Design, implement, and maintain user understanding models
- Ensure model quality and reliability by continuously monitoring performance, calibrating predictions, and addressing data drift or delayed feedback
- Actively participate and work with other leads to set the long-term direction for the team, plan and oversee engineering designs and project execution
- Effectively communicate complex technical concepts to non-engineering stakeholders
- Advanced degree (MS or Ph.D.) in Computer Science, Machine Learning, Statistics, related field, or equivalent practical experience
- 5+ years of hands-on experience building and operating large-scale Ads delivery and optimization systems