Senior Applied Scientist, Alexa AI

ph3Description /h3pAs a Senior Applied Scientist in the Alexa AI team, you will define and drive the science roadmap for state-of-the-br/art conversational AI systems powered by large language models, directly impacting how millions of customers interact with Alexa daily. You'll lead the design of LLM fine-tuning, alignment, and agentic architectures that operate reliably at scale across many languages and devices, owning delivery from research formulation through production deployment. /ph3Description /h3pAs a Senior Applied Scientist in the Alexa AI team, you will define and drive the science roadmap for state-of-the-br/art conversational AI systems powered by large language models, directly impacting how millions of customers interact with Alexa daily. You'll lead the design of LLM fine-tuning, alignment, and agentic architectures that operate reliably at scale across many languages and devices, owning delivery from research formulation through production deployment. /ppWorking at the intersection of research and production, you'll translate the latest advances into customer-facing features. Your work will span the full ML lifecycle: developing novel evaluation frameworks, building automated training pipelines, and conducting rigorous experimentation across diverse devices and endpoints. /ppCollaborating with engineering, product, and cross-functional science teams across Amazon, you'll tackle the team's most complex technical challenges while maintaining practical focus on customer value. This role offers the opportunity to publish at top-tier conferences, generate intellectual property, and see your innovations scale to one of the world's most popular voice assistants. /ph3Key job responsibilities /h3pAs a Senior Applied Scientist in the Alexa AI team: /pulliDefine and drive the science roadmap for conversational AI capabilities powered by large language models /liliDesign, implement, and evaluate novel approaches to LLM fine-tuning, alignment (RLHF, DPO, RLVR), and distillation for production deployment /liliArchitect agentic systems (multi-step reasoning, tool use, planning, and orchestration) that work reliably at scale /liliDevelop evaluation frameworks and methodologies that go beyond standard benchmarks to capture real-world conversational quality /liliTranslate research advances into customer-facing products, working closely with engineering, product, and cross-functional science teams /liliOwn end-to-end delivery of complex, ambiguous research initiatives from problem formulation through experimentation to production deployment, with minimal guidance /liliTackle the team's hardest technical problems while maintaining practical focus on customer value and solution generalizability /liliAdvance the team's scientific reputation through high-impact publications and presentations at top-tier internal and external venues, and generate intellectual property through patents /li /ulpThe applicable collective agreement for this role is CBA for employees of Telecommunication Sector. /ppThe position is classified at level 6 or above, depending on the candidate’s skills, competences and experience. /ppThe minimum gross annual base salary for this position is listed below. The base salary listed corresponds to working on a full-time basis. For part-time hours, the salary will be pro-rated. /ppAmazon reserves the right to offer a higher salary and/or level, depending on the candidate's skills, competencies, and experience. Amazon's package may include a sign on payment. In addition, the candidate may be eligible to participate in a restricted stock unit scheme operated independently by Amazon.com Inc. in USA. /ppYour recruiting team will share final salary and any restricted stock unit scheme if applicable, depending on skills and requirements. /ppIn addition to statutory benefits, and those applicable to the relevant CBA, company supplementary benefits may apply subject to further terms. /ppItaly- EUR104,500 gross annually. /ph3A day in the life /h3pAs a Senior Applied Scientist in the Alexa AI team, your day will involve leading cross-functional collaborations with engineering, product, and science teams to define the technical direction for our conversational assistant. You'll design experiments and review model results that shape the science roadmap, mentor junior scientists, and make high-judgment calls on architecture and deployment trade-offs. Working in a fast-paced, ambiguous environment, you'll own delivery of complex initiatives: from formulating novel research problems to presenting strategic recommendations to senior leadership. Your ability to influence across organizational boundaries will drive measurable customer impact while raising the bar for the experience of millions of customers. /ph3About The Team /h3pAlexa AI is building the science and technology behind Alexa+, Amazon's next-generation conversational assistant. Our team works at the intersection of large language models, reinforcement learning from human feedback and verifiable rewards, agentic architectures, and multilingual/multimodal understanding. We operate at massive scale: our models serve customers across dozens of languages and device types. If you want to push the frontier of conversational AI and see your work used by people every day, come join us. /ph3Basic Qualifications /h3ulliSeveral years of building machine learning models for business application experience /liliPhD, or Master's degree /liliExperience programming in Java, C++, Python or related language /liliExperience with neural deep learning methods and machine learning /li /ulh3Preferred Qualifications /h3ulliExperience in building large language models for business application /liliExperience in building speech recognition, machine translation and natural language processing systems (e.g., commercial speech products or government speech projects) /liliUsage of Generative AI tools to enhance workflow efficiency, with a willingness to learn effective agentic prompting and evaluation practices /li /ulpAmazon is an equal opportunities employer. We believe passionately that employing a diverse workforce is central to our success. We make recruiting decisions based on your experience and skills. We value your passion to discover, invent, simplify and build. Protecting your privacy and the security of your data is a longstanding top priority for Amazon. Please consult our Privacy Notice ( to know more about how we collect, use and transfer the personal data of our candidates. /ppOur 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. /ph3Company /h3p- Amazon Development Centre Italy SRL /ppJob ID: A /p /p #J-18808-Ljbffr