• Recruiting From Scratch (San Francisco, CA)
    …elite AI startup in New York is seeking a Member of Technical Staff to lead AI product engineering and research enablement. Candidates should have experience ... in AI and infrastructure, with a passion for innovation. The...and the chance to work with industry leaders in AI . This role requires collaboration in a high-agency environment… more
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  • Amazon (San Francisco, CA)
    A leading technology company is seeking a Member of Technical Staff specializing in Reinforcement Learning to develop infrastructure for training AI models. This ... large-scale ML systems. This position is based in San Francisco, California, and offers the chance to contribute to groundbreaking AI technology. #J-18808-Ljbffr more
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  • SonicJobs (San Francisco, CA)
    …own the architecture, training, and evolution of our AI agent stack. As Senior Staff AI Engineer , you'll be responsible for fine-tuning LLMs that will ... like candidates do. If you've ever dreamed of building AI that actually uses a website, this is your...idea of coding, reviewing training runs, and designing new RL environments - you'll thrive here. You'll also be… more
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  • Yutori (San Francisco, CA)
    …product interfaces. Towards this goal, we are looking for a member of the AI technical staff to join the founding team. Someone technically strongly, and ... Yutori is reimagining how people interact with the web by building AI agents that can reliably do everyday digital tasks. We are building the entire stack to be… more
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  • Yutori (San Francisco, CA)
    …product interfaces. Towards this goal, we are looking for a member of the AI technical staff to join the founding team. Someone technically strong, and ... reimagining how people interact with the web by building AI agents that can reliably do everyday digital tasks....Scale infra for post-training of multimodal LLMs (CPT, SFT, RL , search, reward models) Scale infra for agentic inference… more
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  • Yutori (San Francisco, CA)
    An innovative AI startup in San Francisco is seeking a member of the AI technical staff to build superhuman AI agents. Responsibilities include scaling ... with product engineers on product design. Ideal candidates will have experience in RL , distributed systems, and a passion for building cutting-edge AI solutions.… more
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  • anthropic (San Francisco, CA)
    Staff Machine Learning Engineer , Virtual Collaborator About Anthropic Anthropic's mission is to create reliable, interpretable, and steerable AI systems. We ... experts, and business leaders working together to build beneficial AI systems. About the role We are looking for...the role We are looking for a Machine Learning Engineer to help us train Claude specifically for virtual… more
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  • Scale AI (San Francisco, CA)
    Staff Machine Learning Research Engineer , Agent Post-training - Enterprise GenAI AI is becoming vitally important in every function of our society. At Scale, ... our mission is to accelerate the development of AI applications. For 9 years, Scale has been the...that serve all of our enterprise clients. As a Staff Agent Post‑Training MLRE, you will build out our… more
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  • anthropic (San Francisco, CA)
    Staff Machine Learning Engineer , Agent Skills...Anthropic's mission is to create reliable, interpretable, and steerable AI systems. We want AI to be ... researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems. About the role Agentic systems are the next frontier of… more
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  • Idler (San Francisco, CA)
    …data effective Support new product lines as we expand beyond coding environments Staff Engineer Responsibilities & Requirements Lead the process of identifying, ... What we do Idler builds reinforcement learning environments that teach AI models to code like 0.01% engineers. Our training environments are based on real-world… more
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  • Amazon (San Francisco, CA)
    Member of Technical Staff - Software Engineering - Full Stack / Backend, AGI Autonomy Job ID: 2916943 | Amazon.com Services LLC Amazon has launched a new research ... in San Francisco to develop foundational capabilities for useful AI agents. We're enabling practical AI to...work combines large language models (LLMs) with reinforcement learning ( RL ) to solve reasoning, planning, and world modeling in… more
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  • Victrays (San Francisco, CA)
    Research Engineer , Virtual Collaborator at Anthropic - San Francisco, CA | New York City, NY | Seattle, WA About Anthropic Anthropic's mission is to create reliable, ... interpretable, and steerable AI systems. We want AI to be...control mechanisms Reward modeling and preventing reward hacking in RL systems Translating product requirements into technical training objectives… more
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  • Menlo Ventures (San Francisco, CA)
    …build beneficial AI systems. About the role As a Research Scientist/ Engineer focused on honesty within the Finetuning Alignment team, you\'ll spearhead the ... [Expression of Interest] Research Scientist/ Engineer , Honesty About Anthropic Anthropic's mission is to...Anthropic's mission is to create reliable, interpretable, and steerable AI systems. We want AI to be… more
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  • Recruiting From Scratch (San Francisco, CA)
    …growth . Every day, you'll collaborate with some of the smartest minds in AI to deliver RL environments, realistic simulated datasets, and infrastructure capable ... hire. https://www.recruitingfromscratch.com/ Title of Role : Member of Technical Staff Location : San Francisco, CA or New York,...published papers , or other tangible work in the AI space. Former founder or founding engineer more
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  • Menlo Ventures (San Francisco, CA)
    About Anthropic Anthropic's mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for ... researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems. About the Role We are looking for researchers to help… more
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  • Greptile (San Francisco, CA)
    …to build agents that autonomously validate code changes. Today that looks like AI that reviews pull requests in GitHub, catching bugs and enforcing standards. We're ... of PR feedback they do and don't care about, perhaps using some sample efficient RL , in order to increase signal-to-noise ratio? Some bugs are best caught by running… more
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  • Scale AI, Inc. (San Francisco, CA)
    Scale AI is seeking a highly technical and strategic Staff / Senior Staff Machine Learning Engineer to act as the Tech Lead (TL) for our next generation ... for Deep Research Agent Development , translating cutting-edge research in Generative AI , Large Language Models (LLMs), and Agentic Frameworks into robust, scalable,… more
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  • Scale AI (San Francisco, CA)
    Scale AI is seeking a highly technical and strategic Staff / Senior Staff Machine Learning Engineer to act as the Tech Lead for its next generation of ... for Deep Research Agent Development, translating cutting‑edge research in Generative AI , Large Language Models (LLMs), and Agentic Frameworks into robust, scalable… more
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  • Member of Technical Staff - Machine…

    Amazon (San Francisco, CA)
    …a new research lab in San Francisco to develop foundational capabilities for useful AI agents. We're enabling practical AI to make our customers more productive, ... work combines large language models (LLMs) with reinforcement learning ( RL ) to solve reasoning, planning, and world modeling in...an exciting new era where agents can redefine what AI makes possible. We'd love for you to join… more
    Amazon (12/04/25)
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