Amazon Principal Applied Scientist Advertiser Growth 

United States, California, Palo Alto 

363438481

Key job responsibilities
The Principal Applied Scientist in Advertiser Guidance team will lead 50+ builders in pioneering a new generation of agentic AI applications for Amazon advertisers. You will define and lead the science roadmap of developing agentic experiences for recommendations and guidance delivered to +1.6MM Sponsored Products and Brand advertisers across multiple channels (Ad Console, Sales-managed, and 3P partners).You will work at the forefront of applied AI, developing methods for fine-tuning, reinforcement learning, and preference optimization, while helping create evaluation frameworks that ensure safety, reliability, and trust at scale. You will work backwards from the needs of advertisers—delivering customer-facing products that directly help them create, optimize, and grow their campaigns.As a Principal Scientist, you will play a critical role in elevating the team’s scientific and technical rigor, identifying and implementing best-in-class algorithms, methodologies, and infrastructure that enable rapid experimentation and scaling. You will communicate learnings to leadership and mentor and grow Applied AI talent across the Ads Org.

- PhD in Computer Science, Statistics or related field.
- 5+ years of applied ML experience in building customer-facing recommender systems involving AI, ML, and NLP.
- Hands-on experience with designing and prototyping AI solutions for real world applications.

- Research publications or patents in generative AI technologies
- Experience with natural language processing and generative model architectures
- Background in advertising technology or e-commerce platforms
- Demonstrated track record of innovative AI solution development