- Microsoft Corporation (Mountain View, CA)
- …turning cutting-edge research into dependable, production-ready capabilities. As a ** Principal Applied Scientist - Security AI Models** , you will ... around the world. The Security Models Training team builds and operates the large-scale AI training and adaptation engines that power Microsoft Security products,… more
- Amazon (Mountain View, CA)
- Description As a Principal Applied Scientist on our Agentic AI Professional Services Experience team, you will serve as the foremost technical authority ... and Applied Machine Learning within professional service contexts. As a principal scientist , you will be the bridge between scientific advancement, business… more
- Microsoft Corporation (Mountain View, CA)
- …generates, manages, and shares AI training data. We are seeking Principal Applied Scientists to drive scientific innovation in data generation, validation, ... statistics, predictive analytics, research) OR equivalent experience. + Experience applying ML/ AI to real-world problems. + Experience leading applied science… more
- Amazon (Sunnyvale, CA)
- Description As a Principal Applied Scientist within the Artificial General Intelligence (AGI) organization, you are a trusted part of the technical ... affect the way we build and integrate algorithms. A Principal Applied Scientist will solicit...a critical role in driving the development of Generative AI (GenAI) technologies that can handle Amazon-scale use cases… more
- Amazon (Palo Alto, CA)
- …, join us in shaping the future of advertising. Key job responsibilities The Principal Applied Scientist will drive transformative innovation in Sponsored ... ability to solve complex problems in advertising science. Through his/her work, the Principal Applied Scientist will directly impact key business metrics… more
- Microsoft Corporation (Mountain View, CA)
- …that empower users to make trustworthy science-informed decisions. We are looking for a Principal Applied Scientist , Agent Foundry (CoreAI) who is passionate ... agents. We are seeking a passionate and skilled Applied Scientist to join the Agent Performance...experience. + 2+ years foundation in machine learning and applied AI techniques, including model evaluation and… more
- Amazon (Palo Alto, CA)
- …AI , join us in shaping the future of advertising. Key job responsibilities The Principal Applied Scientist in Advertiser Guidance team will lead 50+ ... 3P partners). You will work at the forefront of applied AI , developing methods for fine-tuning, reinforcement...them create, optimize, and grow their campaigns. As a Principal Scientist , you will play a critical… more
- Microsoft Corporation (Mountain View, CA)
- …Studio and other Microsoft Copilots. We are seeking an entrepreneurial and creative Principal Applied Scientist to lead groundbreaking research projects, ... field AND 6+ years related experience with Machine Learning AND/OR Artificial Intelligence ( AI ) AND/OR Data/ Applied Science + OR Master's Degree in Statistics,… more
- Amazon (Palo Alto, CA)
- …push the boundary of what's possible in these fields. Key job responsibilities As a Principal Applied Scientist for the team, you will drive appropriate ... possible with AI , join us in shaping the future of advertising. The principal scientist in this position will focus on designing, developing and launching… more
- Microsoft Corporation (Mountain View, CA)
- We're hiring a ** Principal Applied Scientist ** with expertise in areas such as Deep Learning, Ad Tech, Ads Recommendation Systems, Sequential Modeling and ... (LLMs). Join the Signals Modeling team, part of Microsoft AI Ads Engineering, to shape the future of advanced...week from the designated location. In this role, the Principal Applied Scientist will design… more
- Microsoft Corporation (Mountain View, CA)
- The Advanced Reasoning Group is hiring a ** Principal Applied Scientist ** at **Mountain View, CA** , or **Redmond, WA.** The team is responsible for creating ... partnerships across the org. We are looking for a Principal Applied Scientist to deliver...agent, and related ecosystems. Starting January 26, 2026, Microsoft AI (MAI) employees who live within a 50-mile commute… more
- Amazon (Palo Alto, CA)
- Description The Sponsored Products (SP) team is looking for a Principal Scientist to help our millions of shoppers intuitively navigate our vast inventory by ... in product and technical innovations every day! As a Principal Scientist in Sponsored Products, you will...abreast of the latest developments in the space of AI /ML/GenAI modeling and identify opportunities to improve the efficiency… more
- Amazon (Sunnyvale, CA)
- …General Intelligence (AGI) team is looking for a passionate, talented, and inventive Principal Applied Scientist with a strong deep learning background, ... to lead the development of industry-leading technology with multimodal systems. As a Principal Applied Scientist , you are a trusted part of the technical… more
- Genentech (South San Francisco, CA)
- …in target identification, disease understanding, and therapeutic exploration. As a Senior/ Principal Scientist , you will lead scientific initiatives that bridge ... innovator, capable of shaping scientific direction and organizational strategy. Principal Scientist + PhD (or equivalent) in...of drug discovery through a unique combination of foundational AI and applied biology. Relocation benefits are… more
- Amazon (Santa Clara, CA)
- Description We are looking for passionate, talented, and inventive Principal Applied Scientist with a strong machine learning background to help build ... in Natural Language Understanding (NLU), Dialog Systems including Generative AI with Large Language Models (LLMs) and Applied... AI with Large Language Models (LLMs) and Applied Machine Learning (ML). As part of our team,… more
- Amazon (Sunnyvale, CA)
- …Prime Video's technology teams are redefining the digital video experience at scale. As a Principal Applied Scientist at Prime Video, you will be a technical ... strategic leader responsible for inventing, developing, and deploying groundbreaking AI solutions that power personalized, relevant, and delightful experiences for… more
- Amazon (Santa Clara, CA)
- Description Amazon Web Services (AWS) is looking for a Principal Applied Scientist to join the Amazon Q team. Q is AWS's enterprise generative AI ... team, you will lead research and development efforts in generative AI and Agentic AI to enable intelligent agents that perform complex reasoning, automate… more
- Amazon (Santa Clara, CA)
- Description As a Senior Principal Scientist in AGI, you will have deep subject matter expertise in the area of large language models and generative AI across ... specifically, you will provide thought leadership on and lead strategic efforts in Responsible AI efforts for AGI, covering themes including but not limited to AI… more
- Amazon (Santa Clara, CA)
- Description We are seeking a Principal Applied Scientist to lead Amazon Customer Service's (ACS) text-based AI initiatives. In this role, you will ... spearhead the development of our large language model foundations and agentic AI solutions for customer service automation. You will architect scalable chatbot… more
- Amazon (Sunnyvale, CA)
- …with Amazon products every day. Come join our team! Key job responsibilities As a Principal Applied Scientist , you will: * Own the technical architecture and ... on-device ML models for Amazon's hardware products, including audio, vision, and multi-modal AI features. We work at the critical intersection of ML innovation and… more