Software Development Engineer III, Prime Video Personalization & Discovery

Prime Video Personalization and Discovery (PVPD) is seeking a Senior Software Development Engineer to join a small, high-caliber team building the next generation of Prime Video's AI-powered content discovery experience. We are reinventing how customers find something to watch: instead of browsing and scrolling, customers tell Prime Video what they're in the mood for, through natural language conversation, personalized prompts, and interactive recommendations woven directly into the product. You'll work alongside a hand-picked group of senior engineers and applied scientists, each bringing deep expertise in their domain, moving fast on a high-visibility initiative with significant ambiguity. You'll own your area of the system end-to-end: designing, building, and operating the services that combine large language models with Prime Video's personalization, catalog, and engagement signals to deliver conversational discovery at massive scale.Key job responsibilitiesOwn the design, implementation, and operation of core components of Prime Video's conversational discovery platform, delivering production-quality systems in a fast-moving, ambiguous environment Design hybrid approaches that combine LLM-based semantic understanding with traditional personalization and ranking signals for content discovery and recommendationPartner closely with applied scientists and fellow senior engineers to prototype, evaluate, and productionize LLM-powered features including personalized conversation starters, natural language query understanding, multi-turn dialogue, and contextual recommendationsOptimize LLM inference for latency, cost, and quality at the scale of one of the world's largest streaming servicesBuild evaluation and quality-gating mechanisms that measure relevance, personalization, diversity, and safety of LLM-generated content before and after launch Contribute significant code, conduct thorough code reviews, and raise the engineering bar across the teamUphold operational excellence for Tier-1 customer-facing AI systems, including on-call participation, root cause analysis, and driving reliability improvementsCollaborate across team and organizational boundaries to integrate with partner systems spanning inference infrastructure, feature storage, and experimentation platformsBasic qualifications- 5+ years of non-internship professional software development experience- 5+ years of programming with at least one software programming language experience- 5+ years of leading design or architecture (design patterns, reliability and scaling) of new and existing systems experience- Experience as a mentor, tech lead or leading an engineering teamPreferred qualification - 5+ years of full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations experience- Bachelor's degree in computer science or equivalentAmazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status.Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process, including support for the interview or onboarding process, please visit for more information. If the country/region you’re applying in isn’t listed, please contact your Recruiting Partner.The base salary range for this position is listed below. Your Amazon package will include sign-on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience, qualifications, and location. Amazon also offers comprehensive benefits including health insurance (medical, dental, vision, prescription, Basic Life & AD&D insurance and option for Supplemental life plans, EAP, Mental Health Support, Medical Advice Line, Flexible Spending Accounts, Adoption and Surrogacy Reimbursement coverage), 401(k) matching, paid time off, and parental leave. Learn more about our benefits at .USA, NY, New York - 184,900.00 - 250,200.00 USD annually