Amazon Principal Applied Scientist Prime Video Personalization & Discovery 

United States, California, Sunnyvale 

96751191

As a Principal Applied Scientist at Prime Video, you will be a technical and strategic leader responsible for inventing, developing, and deploying groundbreaking AI solutions that power personalized, relevant, and delightful experiences for millions of global customers. You will help shape the vision and direction of key ML systems that support Prime Video’s mission to deliver AI-powered customer experiences.This role demands a unique blend of deep technical expertise in machine learning and recommendation systems, industry leadership, and strong collaboration skills. You will guide the development of high-impact systems end-to-end—leading innovation from foundational research through production deployment—while mentoring scientists and influencing product and engineering roadmaps.Key job 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;-Stay ahead of industry trends and emerging research; leverage them to evolve long-term strategy and architecture;

-PhD (or Master’s with 10+ years of applied experience) in machine learning, computer science, statistics, or a related field
-8+ years of 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
Proficiency 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

-Strong publication record in top-tier conferences (e.g. NeurIPS, ICML, KDD, RecSys, SIGIR)
-Experience with large-scale distributed systems (e.g. Hadoop, Spark)
-Demonstrated ability to influence technical roadmaps and mentor other scientists and engineers
-Experience defining and delivering strategic AI vision for consumer-facing products