Principal Applied Scientist, Personalization & Discovery

Prime Video & Amazon MGM Studios; Seattle (WA); On-site; USD 199,000 - 269,000; Full time

Benefits offered by this job

Health insurance (medical, dental, and

401(k) matching

Paid time off

Parental leave

Sign-on incentives and RSUs

EAP and mental health support

Job summary

Amazon.com Services LLC is seeking a Principal Applied Scientist to lead the invention, development, and deployment of groundbreaking AI solutions at scale, powering personalized experiences for millions of customers. You will shape vision for ML systems supporting Prime Video’s mission and collaborate with engineering, product, and exec stakeholders to drive impactful results.

You will prototype and productionize AI systems, mentor teams, publish research, and stay ahead of trends to guide

Qualifications

• PhD (or Master’s with 10+ years of applied experience) in machine learning, computer science, statistics, or a related field.
• 8+ years experience designing, building, and deploying ML models for real-world business applications at scale.
• Proven leadership in driving cross-functional ML/AI initiatives from ideation through production.
• Experience in Python, Java, or C++, and experience with ML frameworks (e.g., TensorFlow, PyTorch).
• Deep expertise in recommendation systems, search relevance, or large-scale personalization systems.

Responsibilities

• Invent, prototype, and productionize large-scale AI solutions across Prime Video’s personalization and discovery ecosystem using deep learning, generative AI, reinforcement learning, and optimization techniques.
• Provide technical leadership and influence product vision by collaborating closely with engineers, product managers, and senior stakeholders.
• Design and lead high-impact A/B tests and data analyses to validate hypotheses and guide product direction.
• Drive technical bar-raising across science and engineering teams through mentorship, design reviews, and collaboration.
• Stay ahead of industry trends and emerging research; leverage them to evolve long-term strategy and architecture.
• Publish impactful research internally and externally (e.g. top-tier conferences and journals).

Skills

Python/Java/C++

ML frameworks

Leadership in ML/AI

Model deployment experience

Education

PhD or Master’s with 10+ years applied

Tools

Hadoop

Spark

Job description

Amazon.com Services LLC is seeking a Principal Applied Scientist to lead the invention, development, and deployment of groundbreaking AI solutions at scale, powering personalized experiences for millions of customers. You will shape vision for ML systems supporting Prime Video’s mission and collaborate with engineering, product, and exec stakeholders to drive impactful results.

You will prototype and productionize AI systems, mentor teams, publish research, and stay ahead of trends to guide